CONTROLS HARDWARE RELEASE NO. 34.2CONTROLS
CAMAC O52
ED-35888
CONTROLS HARDWARE RELEASE NO. 34.2
CAMAC 052 Module
Quad Unipolar DAC - Power Supply Controller
Robert J. Ducar
September 25, 1984
1 DESCRIPTION
2 INPUT/OUTPUT SCALING
3 CAMAC 052 OP CODES
7 OUTPUT CALIBRATION
8 DOCUMENTATION
9 PALS DOCUMENTATION
PAL DIRECTORY
1.0 DESCRIPTION
The CAMAC 052 module is a four channel DAC - power
supply controller. The AD565 DACs have 12 bits of
resolution and are wired for unipolar operation. The analog
output ranges from 0 to +10.2375 volts with lsb valued at
2.5 mv. Each channel has a buffered output with separate
offset and gain adjustments. The output buffer amplifier is
capable of driving 5ma at full scale output. There is 100
ohms resistance in series with each analog output to isolate
cable capacitance. All outputs are set to zero upon power
up or module clear. A polarity control line is provided for
each channel. Each channel is programmed in 2's complement
code as a left justified 13 bit word.
The module also provides four lines of ON/OFF control
and twelve bits of status monitor. The static ON/OFF
control lines are sourced by 74128 drivers. The status
monitor inputs are opto-coupled (HCPL-2630) with a separate
return common for each group of three monitor inputs. All
inputs and outputs are positive logic. The user may select
one of two types of drivers for the polarity control lines.
2.0 INPUT/OUTPUT SCALING
SELECT INPUT OUTPUT POLARITY
------ ----- ------ --------
Positive Full Scale 7FF8 +10.2375v + (high)
Positive LSB 0008 + 0.0025v + (high)
Zero 0000 0.0000v + (high)
Minus LSB FFF8 + 0.0025v - (low)
Minus Full Scale + LSB 8008 +10.2375v - (low)
Minus Full Scale 8000 +10.2375v - (low)
On board PALs invert the input data and add one lsb
for minus inputs. The lsb is not added for the minus
full scale input which has the result of redundant
outputs for 8008 and 8000 input codes.
3.0 CAMAC 052 OP CODES
All codes return module Q and X immediately.
This module never asserts LAM.
F(0) A(n) Read D/A Value of DACn n = 0 -> 3
---------
R16 - R4 | R3 - R1
--------------------------------------
Sign <- D/A Value -> LSB 0
F(1) A(0) Read Control and Monitor Status
---------
R16 R15 R14 R13 | R12 - R1
--------------------------------------
PS3 PS2 PS1 PS0 SB12 - SB1
ON ON ON ON MONITOR LINES
F(6) A(0) Read Module Number
---------
R16 - R9 | R8 - R1
-----------------------------
0 34 Hex, 52 Dec
F(7) A(0) Dummy Read - No Data Are Returned
---------
F(9) A(0) Reset Module
---------
This command is a logical or with Z*S2 and power
up clear. A reset sets each channel to zero out-
put, sets each PS control line OFF, and sets pol-
arity outputs + (high).
F(16) A(n) Set D/A Value of DACn n = 0 -> 3
----------
R16 - R4 | R3 - R1
--------------------------------------
Sign <- D/A Value -> LSB X
The D/A value is in 2's complement format.
F(28) A(n) Set PSn Control Line OFF n = 0 -> 3
----------
F(30) A(n) Set PSn Control Line ON n = 0 -> 3
----------
4.0 CAMAC 052 MODULE - I/O ASSIGNMENTS
A = R B = L
POS SIGNAL POS SIGNAL
--- ------------------------- --- ---------------
1L Common 1R DAC3 Output
2L Common 2R DAC2 Output
3L Common 3R DAC1 Output
4L Common 4R DAC0 Output
5L SB11 5R SB12
6L Common SB10 SB11 SB12 6R SB10
7L SB8 7R SB9
8L Common SB7 SB8 SB9 8R SB7
9L SB5 9R SB6
10L Common SB4 SB5 SB6 10R SB4
11L SB2 11R SB3
12L Common SB1 SB2 SB3 12R SB1
13L Common 13R Common
14L PS3 Polarity + = 1 - = 0 14R PS3 ON = 1
15L PS2 Polarity + = 1 - = 0 15R PS2 ON = 1
16L PS1 Polarity + = 1 - = 0 16R PS1 ON = 1
17L PS0 Polarity + = 1 - = 0 17R PS0 ON = 1
18L Common 18R Common
5.0 CAMAC 052 MODULE - FRONT PANEL
The CAMAC 052 module has the following front panel features:
N led: Red, stretched
PSn ON leds: Green
DACn Polarity leds: Yellow, on when positive
DACn Analog Views: Lemo, 100 ohm series resistance
Voltage Test Points: -15v, +15v, +5v, COM
6.0 POLARITY CONTROL
The user has the choice of two different output drivers
for the polarity control. The 75447 peripheral driver is
normally installed on the 052 module in locations 14 and 15.
This driver is a good current sink and is suited to driving
electromechanical relays. An internal clamping diode is
wired to +24 volts for each output. These diodes are
normally shunted with an external 100,000 ohm resistor. The
second option is accomplished by the removal of the 75447
drivers and insertion of a 74128 gate at location 8. This
second option provides a TTL/50 ohm compatible signal level
that is a better current source than the 75447 drivers.
7.0 OUTPUT CALIBRATION
In calibrating the voltage outputs, the offset should
first be adjusted so that each output is 0.000 volts for
zero program value. Each channel should then be programmed
to plus or minus full scale. Gain should then be adjusted
so that each output is +10.2375 volts.
8.0 DOCUMENTATION
0812-ED-35888 Schematic
0812-BD-35889 Artwork
0812-BD-35890 Master Drawing
0812-BD-35891 Assembly Drawing
0812-MC-35892 Front Panel Mechanical
0812-MC-35893 Front Panel Silkscreen
9.0 PAL DOCUMENTATION
Directory: DEVL::USR$DISK3:[DUCAR.PALS]
Filenames: 05203A.DAT First NAF Decoder 82S153
05209A.DAT Second NAF Decoder 82S153
052H.DAT MSB DAC Data Manipulator (Qty 4) 82S153
052L.DAT LSB DAC Data Manipulator (Qty 4) 82S153
rjd: DEVL::USR$DISK3:[DUCAR]CMC052.RNO
PALS DOCUMENTATION
module 052h title ' CAMAC 052 2'S COMPLIMENT 052H.DAT ' 052h device 'f153';
I11, I10, I9, I8, I7 pin 1,2,3,4,5; I6, DIR, C6IN, C9OUT pin 6,7,8,9; O6, O7, O8, O9, O10 pin 11,12,13,14,15; O11, C12OUT, NC18, NC19 pin 16,17,18,19;
H,L,X,Z = 1,0,.X.,.Z.; "Use standard PALASM operators @ALTERNATE equations
O6=/DIR*C6IN*/I6 + DIR*/I6 + /DIR*/C6IN*I6 + C12OUT
O7=/DIR*C6IN*I6*/I7 + DIR*/I7 + /DIR*/C6IN*I7 + /DIR*/I6*I7
+ C12OUT
O8=/DIR*C6IN*I6*I7*/I8 + DIR*/I8 + /DIR*/C6IN*I8 + /DIR*/I6*I8
+ /DIR*/I7*I8 + C12OUT
O9=/DIR*C6IN*I6*I7*I8*/I9 + DIR*/I9 + /DIR*/C6IN*I9 + /DIR*/I6*I9 +
/DIR*/I7*I9 + /DIR*/I8*I9 + C12OUT
O10=/DIR*C9OUT*/I10 + DIR*/I10 + /DIR*/C9OUT*I10 + C12OUT
O11=/DIR*C9OUT*I10*/I11 + DIR*/I11 + /DIR*/C9OUT*I11 + /DIR*/I10*I11 +
C12OUT;
C9OUT=/DIR*C6IN*I6*I7*I8*I9;
C12OUT=C9OUT*I10*I11;
"DESCRIPTION:
This PAL provides 2'S compliment arithmetic for the
Camac 052 module. The PAL inverts the data if the DIR pin
is high and if the DIR pin is low the PAL adds one to the
data on the input. When DIR is low and all the inputs are
low then the outputs all go high. This is the higher 6 bit
PAL and uses a Carry In from the lower stage.
The truth table for bit n:
DIR Cn-1 In ! On ! Cn
--------------!----!---
0 0 0 ! 0 ! 0
0 0 1 ! 1 ! 0
0 1 1 ! 0 ! 1
0 1 0 ! 1 ! 0 On=Cn-1*/In + DIR*/In + /DIR*/Cn-1*In
1 0 0 ! 1 ! 0 Cn=/DIR*Cn-1*In
1 0 1 ! 0 ! 0
1 1 1 ! 0 ! 0
1 1 0 ! 1 ! 0
end 052h
module 052low title ' CAMAC 052 2'S COMPLIMENT 052LOW.DAT ' 052low device 'f153';
I5, I4, I3, I2, I1 pin 1,2,3,4,5; I0, DIR, C12IN, NC9 pin 6,7,8,9; O0, O1, O2, O3, O4 pin 11,12,13,14,15; O5, C6OUT, NC18, NC19 pin 16,17,18,19;
H,L,X,Z = 1,0,.X.,.Z.; "Use standard PALASM operators @ALTERNATE equations
O0=/I0 + C12IN
O1=/DIR*I0*/I1 + DIR*/I1 + /DIR*/I0*I1 + C12IN
O2=/DIR*I0*I1*/I2 + DIR*/I2 + /DIR*/I0*I2 + /DIR*/I1*I2
+ C12IN
O3=/DIR*I0*I1*I2*/I3 + DIR*/I3 + /DIR*/I0*I3 + /DIR*/I1*I3 +
/DIR*/I2*I3 + C12IN
O4=/DIR*I0*I1*I2*I3*/I4 + DIR*/I4 + /DIR*/I0*I4 + /DIR*/I1*I4 +
/DIR*/I2*I4 + /DIR*/I3*I4 + C12IN
O5=/DIR*I0*I1*I2*I3*I4*/I5 + DIR*/I5 + /DIR*/I0*I5 + /DIR*/I1*I5 +
/DIR*/I2*I5 + /DIR*/I3*I5 + /DIR*/I4*I5 + C12IN
C6OUT=/DIR*I0*I1*I2*I3*I4*I5;
"DESCRIPTION:
This PAL provides 2'S compliment arithmetic for the
Camac 052 module. The PAL inverts the data if the DIR pin
is high and if the DIR pin is low the PAL adds one to the
data on the input. When DIR is low and all the inputs are
low then the outputs all go high. This is the lower 6 bit
PAL and provides a carry out to the higher 6 bit PAL
The truth table for bit 0:
DIR I0 ! O0 ! C0
----------!----!----
0 0 ! 1 ! 0
0 1 ! 0 ! 1 O0=/I0 C0=/DIR*I0
1 1 ! 0 ! 0
1 0 ! 1 ! 0
The truth table for bit n:
DIR Cn-1 In ! On ! Cn
--------------!----!---
0 0 0 ! 0 ! 0
0 0 1 ! 1 ! 0
0 1 1 ! 0 ! 1
0 1 0 ! 1 ! 0 On=Cn-1*/In + DIR*/In + /DIR*/Cn-1*In
1 0 0 ! 1 ! 0 Cn=/DIR*Cn-1*In
1 0 1 ! 0 ! 0
1 1 1 ! 0 ! 0
1 1 0 ! 1 ! 0
end 052low