The CAMAC 166 module generates a single frame of MDAT information for incorporation onto the MDAT link. Frames are presently transmitted at a 720 Hz rate. Each frame, consisting of 28 bits of data, has a serial transmit time of 2.75 microseconds. Frames are generally transmitted in ascending order of Type Code: number and are transmitted at approximately ten microsecond intervals.
The data to be transmitted by the 166 module are generally received as parallel data at the module I/O connector. The module may also receive data for transmission from the CAMAC dataway. Custom PALs on each module adapt to the particular protocol of the instrumentation sourcing the data. DIP switches on the module provide the Type Code to be transmitted with the data and the version number of the module. Adjustment pots are provided on board to control the output symmetry and the delay from the 720 Hz event, TCLK $07, at which the transmission is initiated. Most 166 modules have their transmission initiated by an external 377 channel.
There are a total of four PALs on the 166 MDAT Transmitter module. 16603A.ABL and 16608A.ABL are common to all versions. PALs 16618n.ABL and 16652n.ABL are custom to implemented versions. A working spare for most implemented versions is available in the Controls Lab area on the first floor of the Booster East Tower.
| Ver 10.0 | NCAMAC $06 N1 | TC any | Any MDAT Parameter |
| Ver 13.1 | TEV $BE N16 | TC $60 | Test Frame (Old MI Intensity) |
| Ver 13.1 | TEV $BE N22 | TC $03 | Time of Day LSB |
| Ver 13.1 | TEV $BE N23 | TC $04 | Time of Day MSB |
| Ver 14.0 | TEV $BF N5 | TC $10 | P1-P2-P3 Beamline Autotune Offset |
| Ver 17.0 | BSTR $45 N18 PBAR $82 N1 PBAR $20 N19 SWYD $B0 N? SWYD $B3 N? SWYD $E1 N? | TC $60 | Fake old MI Intensity |
These first four versions of the 166 module are all supplied with data from TECAR at the A2 service building. TECAR multiplexes the four separate data words onto the sixteen input data lines and provides three additional control lines. A steering line is connected to CL1 of all associated 166 modules. This line, which has a LS374 driver, is high for programmed values and low for measured values. A strobe line for I values is connected to CL2 of all associated 166 modules. This is an active high pulse and has a 74128 driver. A strobe line for IDot values is connected to CL3 of all associated 166 modules. This is also an active high pulse and has a 74128 driver.
All data are refreshed at a 720 Hz rate comfortably between TCLK $07 events. Data are loaded into the transmitters at the $07 event and thereupon serially transmitted at ten microsecond intervals.
| Type Code: | $10 - Tevatron Programmed I |
|---|---|
| Module Location: | TEV $A6 N17 |
| Unique PAL(s): | 16618A.ABL 16652A.ABL |
This module generates the serial transmission for Tevatron Programmed I. Data is received from TECAR and is clocked by appropriate control lines. TECAR presents 16 bits of data as an unsigned integer with a full-scale value of 5000 amps and LSB valued at 5000/65535 or 76.29394531 ma. The CAMAC 160 modules receive the upper 12 bits of this transmitted value, for which the LSB is 1.220703125 amps.
This module clocks TECAR data when CL1 is high and when CL2 is pulsed. This transmission is launched ten microseconds after TCLK event $07. Delay on the module from $07 to beginning of transmission is approximately 1 microsecond.
| CL1 input termination: | 10K ohms |
|---|---|
| CL2 and CL3 input terminations: | 470 ohms |
| Input Data terminations (RA): | 4.7K ohms |
| IC 24 (low side): | 10 microseconds |
| IC 30 (low side): | not used |
| DCE: | $40 + $41 + $49 + $4D (Tevatron Resets) |
| Type Code: | $11 - Tevatron Programmed I Dot |
|---|---|
| Module Location: | TEV $A6 N18 |
| Unique PAL(s): | 16618B.ABL 16652A.ABL |
This module generates the serial transmission for Tevatron Programmed I Dot. Data is received from TECAR and are clocked by appropriate control lines. TECAR presents 16 bits of data as a signed 2's complement integer with a full-scale value of 439.453125 amps/sec with a corresponding LSB valued at 13.411045 ma/sec. A select group of 160 modules receive the upper 12 bits of this transmitted value, for which the LSB is .21457672 amps/sec.
This module clocks TECAR data when CL1 is high and when CL3 is pulsed. This transmission is launched twenty microseconds after TCLK event $07. Delay on the module from $07 to beginning of transmission is approximately 10.8 microseconds.
| CL1 input termination: | 10K ohms |
|---|---|
| CL2 and CL3 input terminations: | 470 ohms |
| Input Data terminations (RA): | 4.7K ohms |
| IC 24 (low side): | 20 microseconds |
| IC 30 (low side): | not used |
| DCE: | $40 + $41 + $49 + $4D (Tevatron Resets) |
| Type Code: | $20 - Tevatron Measured I |
|---|---|
| Module Location: | TEV $A6 N19 |
| Unique PAL(s): | 16618C.ABL 16652A.ABL |
This module generates the serial transmission for Tevatron Measured I. Data is received from TECAR and is clocked by appropriate control lines. TECAR presents 16 bits of data as an unsigned integer with a full-scale value of 5000 amps and LSB valued at 5000/65535 or 76.29394531 ma. A select group of CAMAC 160 modules receive the upper 12 bits of this transmitted value, for which the LSB is 1.220703125 amps.
This module clocks TECAR data when CL1 is low and when CL2 is pulsed. This transmission is launched thirty microseconds after TCLK event $07. Delay on the module from $07 to beginning of transmission is approximately 20.3 microseconds.
| CL1 input termination: | 10K ohms |
|---|---|
| CL2 and CL3 input terminations: | 470 ohms |
| Input Data terminations (RA): | 4.7K ohms |
| IC 24 (low side): | 30 microseconds |
| IC 30 (low side): | not used |
| DCE: | $40 + $41 + $49 + $4D (Tevatron Resets) |
| Type Code: | $21 - Tevatron Measured I Dot |
|---|---|
| Module Location: | TEV $A6 N20 |
| Unique PAL(s): | 16618D.ABL 16652A.ABL |
This module generates the serial transmission for Tevatron Measured I Dot. Data is received from TECAR and is clocked by appropriate control lines. TECAR presents 16 bits of data as a signed 2's complement integer with a full-scale value of 439.453125 amps/sec with a corresponding LSB valued at 13.411045 ma/sec. A select group of 160 modules receive the upper 12 bits of this transmitted value, for which the LSB is .21457672 amps/sec.
This module clocks TECAR data when CL1 is low and when CL3 is pulsed. This transmission is launched forty microseconds after TCLK event $07. Delay on the module from $07 to beginning of transmission is approximately 31 microseconds.
| CL1 input termination: | 10K ohms |
|---|---|
| CL2 and CL3 input terminations: | 470 ohms |
| Input Data terminations (RA): | 4.7K ohms |
| IC 24 (low side): | 40 microseconds |
| IC 30 (low side): | not used |
| DCE: | $40 + $41 + $49 + $4D (Tevatron Resets) |
| Type Code: | $40 - Main Ring Measured I |
|---|---|
| Module Location: | (WAS) MR $A2 N18 |
| Unique PAL(s): | 16618I.ABL 16652D.ABL |
This module generates the serial transmission for Main Ring Measured I. The data for this transmission are sourced by MECAR which effects a pass through of M:MIBEND in digital form.
Input data is terminated with 1K ohms and CL1 is terminated with 100 ohms. Input data is latched 2 microseconds after the assertion of CL1 and are loaded into the transmitter 200 nanoseconds thereafter. The transmission is nominally 70 microseconds after TCLK Event $07. Delay on the module from $07 to beginning of transmission is approximately 64 microseconds.
Full scale for the transmitted parameter of Measured Main Ring I is 2000 amps. The LSB for 12 bits of data is valued at .488289 amps. The LSB of the 16-bit word is valued at 30.518 ma. These data are transmitted as an unsigned positive integer.
For safety considerations, the transmitter is always loaded at the occurrence of the 720 Hz clock event - even though the data may not be fresh.
| IC 13 input terminations | 100 ohms |
|---|---|
| Input Data terminations (RA): | 1K ohms |
| IC 24 (low side): | 70 microseconds nominal |
| IC 30 (low side): | 2 microseconds |
| DCE: | $20 + $21 + $29 + $2A + $2B + $2D + $2E |
| Type Code: | $30 - Main Ring Programmed I |
|---|---|
| Module Location: | (WAS) MR $A2 N16 |
| Unique PAL(s): | 16618I.ABL 16652D.ABL |
This module generates the serial transmission for Programmed Main Ring I. The data for this transmission are sourced by MECAR. Active high data are sourced at a 720Hz rate.
Full scale for the transmitted parameter of Programmed Main Ring I is 2000 amps. The LSB for 12 bits of data is valued at .488289 amps. The LSB of the 16-bit word is valued at 30.518 ma. These data are transmitted as an unsigned positive integer.
This transmission is launched approximately fifty microseconds after TCLK event $07. Delay on the module from $07 to beginning of transmission is approximately 45 microseconds. (This delay adjustment is somewhat coarse.)
For safety considerations, the transmitter is always loaded at the occurrence of the 720 Hz clock event - even though the data may not be fresh.
| CL1 input termination: | 1K ohms |
|---|---|
| Input Data terminations (RA): | 1K ohms |
| IC 24 (low side): | 50 microseconds |
| DCE: | $20 + $21 + $29 + $2A + $2B + $2D + $2E |
| Type Code: | $31 - Main Ring Programmed I Dot |
|---|---|
| Module Location: | (WAS) MR $A2 N17 |
| Unique PAL(s): | 16618I.ABL 16652D.ABL |
This module generates the serial transmission for Main Ring Programmed I Dot. The data for this transmission is sourced by MECAR.
Full scale for the transmitted parameter of Programmed Main Ring I Dot is 5000 amps/sec. This data is transmitted as a signed 2's complement integer. The LSB for 12 bits of data is valued at 2.4414806 amps/sec. The LSB of the 16-bit word is valued at 152.5925 ma/sec.
This transmission is launched approximately sixty microseconds after TCLK event $07. Delay on the module from $07 to beginning of transmission is approximately 55 microseconds.
For safety considerations, the transmitter is always loaded at the occurrence of the 720 Hz clock event - even though the data may not be fresh.
| CL1 input termination: | 1K ohms |
|---|---|
| Input Data terminations (RA): | 1K ohms |
| IC 24 (low side): | 60 microseconds |
| DCE: | $20 + $21 + $29 + $2A + $2B + $2D + $2E |
| Type Code: | $41 - Main Ring Measured I Dot |
|---|---|
| Module Location: | (WAS) MR $A2 N19 |
| Unique PAL(s): | 16618I.ABL 16652D.ABL |
This module generates the serial transmission for Main Ring Measured I Dot. The data for this transmission are sourced by MECAR which effects a pass through of M:MDIBND in digital form.
Full scale for the transmitted parameter of Measured Main Ring I Dot is 5000 amps/sec. This data is transmitted as a signed 2's complement integer. The LSB for 12 bits of data is valued at 2.4414806 amps/sec. The LSB of the 16-bit word is valued at 152.5925 ma/sec.
This transmission is launched approximately eighty microseconds after TCLK event $07. Delay on the module from $07 to beginning of transmission is approximately 75 microseconds.
For safety considerations, the transmitter is always loaded at the occurrence of the 720 Hz clock event - even though the data may not be fresh.
| CL1 input termination: | 1K ohms |
|---|---|
| Input Data terminations (RA): | 1K ohms |
| IC 24 (low side): | 80 microseconds |
| DCE: | $20 + $21 + $29 + $2A + $2B + $2D + $2E |
| Type Code: | $60 - Main Injector Intensity (I:IBEAMB)
$61 - Main Injector Intensity (I:IBEAMM ) |
|---|---|
| Module Location: | MI $32 N14 MI $32 N15 |
| Unique PAL(s): | 16618I.ABL 16652D.ABL |
This module generates the serial transmission for Main Injector Intensity. A nearby NIM module (constructed by Steve Bjerklie) sources the data for this transmission. The NIM module differentially receives the analog signal for I:IBEAMB and digitizes it at a 720 Hz rate. The digitize command is provided by the 166 module. The NIM module presents 16 bits of data to the 166, unsigned and left justified, with a Convert Complete status line. The Convert Complete is active high, sourced by a 74128 driver, and is wired to the CL1 input of the 166 module. 74LS541 drivers source the data.
The data are transmitted as an unsigned positive integer. Full scale for the transmitted parameter of Main Injector Intensity is 6.66 x E13 protons. The LSB for 12 bits of data is valued at1.626 x E10 protons. The LSB of the 16-bit word is valued at 1.01625 x E9 protons.
This transmission is launched nominally 200 hundred microseconds after TCLK event $07. Delay on the module from $07 to beginning of transmission is approximately 190 microseconds.
For safety considerations, the transmitter is always loaded at the occurrence of the 720 Hz clock event - even though the data may not be fresh.
| CL1 input termination: | 1K ohms |
|---|---|
| Input Data terminations (RA): | 1K ohms |
| IC 24 (low side): | 300 microseconds |
| DCE: | $20 + $21 + $29 + $2A + $2B + $2D + $2E |
| Type Code: | any MDAT parameter |
|---|---|
| Module Location: | Al Franck's Lab |
| Unique PAL(s): | 16618F.ABL 16652C.ABL |
This module generates serial transmissions for any MDAT parameter. The data for this transmission is sourced by an analog to digital converter that digitizes the output of a signal generator at a 720 Hz rate. The signal generator is normally synced at a 15 Hz rate. The 720 Hz and DCE (set to TCLK Event $0F) outputs of the 166 are utilized as the control signals to this external hardware. The EOC pulse from the digitizer is applied to the CL1 input for synchronization.
| IC 13 input terminations: | 100 ohms |
|---|---|
| Input Data terminations (RA): | 1K ohms |
| IC 24 (low side): | 2 microseconds |
| IC 30 (low side): | 2 microseconds |
| DCE: | $0F |
| Type Code: | $50 - Tevatron Intensity (T:IBEAMB) |
|---|---|
| Module Location: | MI $F1 N2 |
| Unique PAL(s): | 16618P.ABL 16652A.ABL |
This module generates the serial transmission for Tevatron Intensity. A nearby NIM module (constructed by Steve Bjerklie) sources the data for this transmission. The NIM module differentially receives the analog signal for T:IBEAMB and digitizes it at a 720 Hz rate. The digitize command is provided by the 166 module. The NIM module presents 16 bits of data to the 166, unsigned and left justified, with a Convert Complete status line. The Convert Complete is active high, sourced by a 74128 driver, and is wired to the CL1 input of the 166 module. 74LS541 drivers source the data.
This module was only active during Fixed Target Physics operations. The activating 720 Hz event is gated on by an internal flag that is set by TCLK event $49 and reset by TCLK event $C1. When activated, this transmission is launched nominally 90 hundred microseconds after TCLK event $07. Delay on the module from $07 to beginning of transmission is approximately 76 microseconds.
Input data is terminated with 1K ohms and CL1 is terminated with 100 ohms. Input data is latched 2 microseconds after the assertion of CL1 and are loaded into the transmitter 200 nanoseconds thereafter. The transmission is nominally 90 microseconds after the TCLK Event $07.
For safety considerations, the transmitter is always loaded at the occurrence of the 720 Hz clock event - even though the data may not be fresh.
Full scale for the transmitted parameter of Tevatron Intensity is 5.36 x E13 protons. The LSB for 12 bits of data is valued at 1.3089 x E10 protons. The LSB of the 16-bit word is valued at 8.1607 x E8 protons.
| IC 13 input terminations | 100 ohms |
|---|---|
| Input Data terminations (RA): | 1K ohms |
| IC 24 (low side): | 90 microseconds nominal |
| IC 30 (low side): | 2 microseconds |
| DCE: | $40 $4D (Inject Beam Events) |
NOTE: The digitizing NIM module has had a history of hanging up. The fix is to extract and reseat the NIM module in the NIM bin or to cycle NIM power.
| Type Code: | $51 - Tevatron Intensity (T:IBEAM) |
|---|---|
| Module Location: | MI $F1 N3 |
| Unique PAL(s): | 16618P.ABL 16652A.ABL |
This module generates the serial transmission for Tevatron Colliding Physics and Low Fixed-Target Intensity.
A nearby NIM module (constructed by Steve Bjerklie) sources the data for this transmission. The NIM module differentially receives the analog signal for T:IBEAM and digitizes it at a 720 Hz rate. The digitize command is provided by the 166 module. The NIM module presents 16 bits of data to the 166, unsigned and left justified, with a Convert Complete status line. The Convert Complete is active high, sourced by a 74128 driver, and is wired to the CL1 input of the 166 module. 74LS541 drivers source the data.
This module is active during both Colliding Physics and Fixed-Target operations.
Input data is terminated with 1K ohms and CL1 is terminated with 100 ohms. Input data is latched 2 microseconds after the assertion of CL1 and are loaded into the transmitter 200 nanoseconds thereafter. The transmission is nominally 100 microseconds after the TCLK Event $07. Delay on the module from $07 to beginning of transmission is approximately 86 microseconds.
For safety considerations, the transmitter is always loaded at the occurrence of the 720 Hz clock event - even though the data may not be fresh.
Full scale for the transmitted intensity parameter is 10.00 x E12 protons + p-bars. The LSB for 12 bits of data is valued at 2.4414 x E9. The LSB of the 16 bit word is valued at 1.5259 x E8. These data are transmitted as an unsigned positive integer.
| IC 13 input terminations | 100 ohms |
|---|---|
| Input Data terminations (RA): | 1K ohms |
| IC 24 (low side): | 59 microseconds nominal |
| IC 30 (low side): | 2 microseconds |
| DCE: | $40 $4D (Inject Beam Events) |
NOTE: The digitizing NIM module has had a history of hanging up. The fix is to extract and reseat the NIM module in the NIM bin or to cycle NIM power.
| Type Code: | $52 - Tevatron Time at 150 GeV |
|---|---|
| Module Location: | TEV $BE N18 |
| Unique PAL(s): | 16618O.ABL 16652G.ABL |
This module generates the serial transmission for Tevatron Time at 150 GeV. The data for this transmission is sourced by an adjacent CAMAC 266 module (C:REMVB2). This module presents 16 bits of data to the 166 as a signed number with full scale of $7FFF. The data is transmitted as an unsigned 16-bit value.
Input data are terminated with 1K ohms and are latched and loaded into the transmitter as close to transmit time as possible. No external signals are necessary to effect the load of external data.
Full scale for the transmitted parameter of Tevatron Time at 150 GeV is 655,350 seconds, 10922.5 minutes, 182.0417 hours, or 7.5851 days. The LSB of the 16-bit word is valued at 10 seconds.
This transmission is launched nominally 4 microseconds after an external trigger provided by a 377 card in TEV $B2 slot 21 (G:TC52D). Delay on the module from $07 to beginning of transmission is set to 106 microseconds.
| IC 13 input terminations | 100 ohms |
|---|---|
| Input Data terminations (RA): | 1K ohms |
| IC 24 (low side): | 4 microseconds nominal |
| IC 30 (low side): | 2 microseconds |
| DCE: | $41 $42 (Tevatron Ramp Events) |
| Type Code: | $03 - Time of Day LSB $04 - Time of Day MSB $12 - Tevatron State |
|---|---|
| Module Location: | TEV $BE N22 (MDAT03) TEV $BE N23 (MDAT04) TEV $BE N16 (MDAT12) |
| Unique PAL(s): | 16618M.ABL 16652I.ABL |
This module generates the serial transmission for Tevatron State and time of day.
The data for the TC$03 and TC$04 transmission are sourced from the CAMAC dataway and are set by the TEVA frontend.
The data for the TC$12 transmission are sourced from the CAMAC dataway and are set at the same time as PA1028, Sequencer. The module driver presents 16 bits of data to the C166.
Input data are latched immediately after the assertion of F16 and are loaded into the transmitter 250 nanoseconds thereafter. The transmission is nominally 220 microseconds after TCLK event $07. See note below.
Because the digitize and transmission frequencies are asynchronous, the module loads the transmitter and triggers the transmission immediately thereafter (every 1.4ms). If a new set of data is available from CAMAC during the period from 500ns before the load of the transmitter until the trigger for the transmission, the new data will be ignored. External data input is not an allowable function for this module.
The TC$03 transmission is launched nominally 5 microseconds after an external trigger provided by a 377 card in TEV $BF slot 21 (G:TC03D). Delay on the module from $07 to beginning of transmission is set to 156 microseconds.
The TC$04 transmission is launched nominally 5 microseconds after an external trigger provided by a 377 card in TEV $BF slot 21 (G:TC04D). Delay on the module from $07 to beginning of transmission is set to 166 microseconds.
The TC$12 transmission is launched nominally 5 microseconds after an external trigger provided by a 377 card in TEV $BF slot 21 (G:TC12D). Delay on the module from $07 to beginning of transmission is set to 217 microseconds.
Construction Details
| IC 24 (low side): | 5 microseconds nominal (pot + 10pF) |
|---|---|
| IC 24 (high side): | 500 nanoseconds nominal (100pf + 9.1K) |
| IC 30 (low side): | 250 nanoseconds nominal (47pf + 8.2K) |
| IC 30 (high side): | 250 nanoseconds (47pf + 8.2K) |
| DCE: | $C5 $C7 (Start Low Beta Squeeze B0, D0) |
| Type Code: | $10 - P1-P2-P3 Beamline Autotune Offset |
|---|---|
| Module Location: | TEV $BF N5 |
| Unique PAL(s): | 16618N.ABL 16652D.ABL |
This module generates the serial transmission for the P1-P2-P3 Beamline Autotune Offset. The data for this transmission are sourced by an adjacent CAMAC 468 module in $BF N3,4. The 468 generates an analog waveform as a function of time and digitizes it at a 1 kHz rate.
Input data and the CL1 input are terminated with 1K ohms. Input data is latched immediately after the assertion of CL1 and is loaded into the transmitter 250 nanoseconds thereafter. The transmission is normally 4 microseconds after an external trigger provided by a 377 card in $BF slot 21 (I:TC10D). Delay from $07 to beginning of transmission is set at 38 microseconds.
Because the digitize and transmission frequencies are asynchronous, the module loads the transmitter and triggers the transmission immediately thereafter (every 1.4ms). If a new set of data is available from the 468 during the period from 500ns before the load of the transmitter until the trigger for the transmission, the new data will be ignored. When using CAMAC to write data, the data will load at 720 Hz, the same as the transmitter and the trigger, and no data will be dropped.
Construction Details
| IC 24 (low side): | 4 microseconds nominal (pot + 10pF) |
|---|---|
| IC 24 (high side): | 500 nanoseconds nominal (100pf + 9.1K) |
| IC 30 (low side): | 250 nanoseconds nominal (47pf + 8.2K) |
| IC 30 (high side): | 250 nanoseconds (47pf + 8.2K) |
| DCE: | $67 $68 (TeV Water Curve Function Gen. New, Start)
$6E $6F (TeV RF Function Gen. New, Start) |
| Type Code: | $54 - Main Ring Programmed I MSW |
|---|---|
| Module Location: | (WAS) MR $A2 N20 |
| Unique PAL(s): | 16618I.ABL 16652D.ABL |
This module generates the serial transmission for Main Ring Programmed I Prime MSW (Most Significant Word) in IEEE floating point format. Programmed I Prime is the difference of Main Ring Programmed I and the Tevatron Feed Forward term.
A VMIVME2510B module in a nearby VME crate sources the data for this transmission. The 2510B is a TTL I/O module. The data it gets is digitized at a 1.44 kHz rate. The 2510B module presents 16 bits of data to the 166 with Select and Enable lines. The Select is active high, sourced by a 74AS645 driver, and is wired to the CL1 input of the 166 module. 74AS645 drivers source the data.
Input data, CL1 and CL2 are terminated with 1K ohms. Input data are latched 2 microseconds after the assertion of CL1 and are loaded into the transmitter 200 nanoseconds thereafter. The transmission is nominally 160 microseconds after TCLK Event $07.
This transmission is launched nominally 130 hundred microseconds after TCLK event $07. Delay on the module from $07 to beginning of transmission is approximately 125 microseconds.
For safety considerations, the transmitter is always loaded at the occurrence of the 720 Hz clock event - even though the data may not be fresh.
| CL1 and CL2 termination: | 1K ohms |
|---|---|
| All other IC13 terminations: | 100 ohms |
| Input Data terminations (RA): | 1K ohms |
| IC 24 (low side): | 160 microseconds nominal |
| IC 30 (low side): | 2 microseconds nominal |
| DCE: | $20 + $21 + $29 + $2A + $2B + $2D + $2E |
| Type Code: | $55 - Main Ring Programmed I Prime LSW |
|---|---|
| Module Location: | (WAS) MR $A2 N21 |
| Unique PAL(s): | 16618I.ABL 16652D.ABL |
This module generates the serial transmission for Main Ring Programmed I Prime LSW (Least Significant Word) in IEEE floating point format. Programmed I Prime is the difference of Main Ring Programmed I and the Tevatron Feed Forward term. A VMIVME2510B module in a nearby VME crate sources the data for this transmission. The 2510B is a TTL I/O module. The data it gets is digitized at a 1.44 kHz rate. The 2510B module presents 16 bits of data to the 166 with Select and Enable lines. The Select is active high, sourced by a 74AS645 driver, and is wired to the CL1 input of the 166 module. 74AS645 drivers source the data.
Input data, CL1 and CL2 are terminated with 1K ohms. Input data is latched 2 microseconds after the assertion of CL1 and is loaded into the transmitter 200 nanoseconds thereafter. The transmission is nominally 170 microseconds after TCLK Event $07.
This transmission is launched nominally 140 hundred microseconds after TCLK event $07. Delay on the module from $07 to beginning of transmission is approximately 135 microseconds.
For safety considerations, the transmitter is always loaded at the occurrence of the 720 Hz clock event - even though the data may not be fresh.
| CL1 and CL2 termination: | 1K ohms |
|---|---|
| All other IC13 terminations: | 100 ohms |
| Input Data terminations (RA): | 1K ohms |
| IC 24 (low side): | 170 microseconds nominal |
| IC 30 (low side): | 2 microseconds nominal |
| DCE: | $20 + $21 + $29 + $2A + $2B + $2D + $2E |
| Type Code: | $60 - Fake MI Intensity |
|---|---|
| Module Location | : BSTR $45 N18 PBAR $82 N1 PBAR $20 N19 SWYD $B0 N? SWYD $B3 N? SWYD $E1 N? |
| Unique PAL(s): | 16618Q.ABL 16652C.ABL |
This module generates a fake serial transmission for Main Injector Intensity in order to make the 453 and 465 modules work where there is no MDAT signal available. There are no input data for this module.
Construction Details:
| IC 24 (low side) | 2 microseconds nominal (100pF) |
|---|---|
| IC 30 (low side) | 2 microseconds nominal (10K 390pF) |
| DCE | $0F |
| NIM | 166 Mod | Name | |
|---|---|---|---|
| 1 | 10L | D15 MSB | Measured Main Ring I or Tevatron Intensity |
| 2 | 10R | D14 | |
| 3 | 11L | D13 | |
| 4 | 11R | D12 | |
| 5 | 12L | D11 | |
| 6 | 12R | D10 | |
| 7 | 13L | D9 | |
| 8 | 13R | D8 | |
| 9 | 14L | D7 | |
| 10 | 14R | D6 | |
| 11 | 15L | D5 | |
| 12 | 15R | D4 | |
| 13 | 16L | D3 | |
| 14 | 16R | D2 | |
| 15 | 17L | D1 | |
| 16 | 17R | D0 LSB | |
| 17 | 8L | CL1 Input - Converter Done /Busy | |
| 26 | 18L et al | COMMON | |
| 4L | 720 Hz Digitize Command (COAX, LEMO) | ||
| 3L | TCLK Input (COAX, LEMO) | ||
| 2L | TCLK Output | ||
| 1L | MDAT Output (COAX, LEMO) | ||
| 468"B" | 166Mod | Name | |
|---|---|---|---|
| 17L | 10L | D15 MSB | ANODE PROGRAM |
| 17R | 10R | D14 | |
| 16L | 11L | D13 | |
| 16R | 11R | D12 | |
| 15L | 12L | D11 | |
| 15R | 12R | D10 | |
| 14L | 13L | D9 | |
| 14R | 13R | D8 | |
| 13L | 14L | D7 | |
| 13R | 14R | D6 | |
| 12L | 15L | D5 | |
| 12R | 15R | D4 | |
| 11L | 16L | D3 | |
| 11R | 16R | D2 | |
| 10L | 17L | D1 | |
| 10R | 17R | D0 LSB | |
| 18R | 8L | STROBE CL1 | |
| 1L, 18L | 18L et al | COMMON | |
| TECAR | 166Mod | Name | |
|---|---|---|---|
| 1 | 10L | D15 MSB | Programmed & MeasuredTevatron I & I Dot Data |
| 2 | 10R | D14 | |
| 3 | 11L | D13 | |
| 4 | 11R | D12 | |
| 5 | 12L | D11 | |
| 6 | 12R | D10 | |
| 7 | 13L | D9 | |
| 8 | 13R | D8 | |
| 9 | 14L | D7 | |
| 10 | 14R | D6 | |
| 11 | 15L | D5 | |
| 12 | 15R | D4 | |
| 13 | 16L | D3 | |
| 14 | 16R | D2 | |
| 15 | 17L | D1 | |
| 16 | 17R | D0 LSB | |
| 17 | 8R | CLK I, CL2 | |
| 18 | 9L | CLK I Dot, CL3 | |
| 20-37 | 18L et al | COMMON | |
| 8L | PROG, /MEAS, CL1(COAX, BNC) | ||
| 3L | TCLK Input (COAX, LEMO) | ||
| 2L | TCLK Output | ||
| 1L | MDAT Output (COAX, LEMO) | ||
Note: The primary TCLK input is from the local 10 Mbit Repeater chassis to the 166 module resident in Slot 17. TCLK is then daisy-chained to Slots 18,19, and 20.