MADC entries are not too hard.

1)  You need to find out the MADC number.  You can usually find this out
    by displaying the crate in question with page D20.  (I can show you
    how to do this--I don't know whether you are familiar or not.)

2)  The Reading SSDN looks like this:

	SSDNHX READNG (0/0042/mmcc/0)
                              | |
                              | +--- Channel number (00 to 3F)
 			      +----- MADC number

    For example, following is from C:MULOSE:

	SSDNHX READNG (0000/0042/3918/0000)
                                 | |
 			         | +----- Channel number 24 (dec) = 18 (hex)
                                 +--- MADC number 57 (dec) = 39 (hex),
			              is for crate DB slot 5 in the
			              CDF control room

4)  The EMC is similar:
                             +-+--- Same as above
                             | |
	SSDNHX READNG (0318/ccmm/0/0)
                        | |
                        | +-- Node number: 18 is Tevatron front end
                        |        All the controls crates at CDF which
                        |        are NOT on the CDF front end are on 
                        |        the Tevatron front end.
                        +---- Magic number for MADC alarms

3)  PRO READNG (2, 2, 60)
                       |
                       +-- The normal case is 1 Hz parameter page updates

4)  Three fields of the PDB are fixed, you have no choice:

	PDB READNG ( 'Volt', '...', 0, 2, 2, ... )
                       |            |     |
                       |            |     +--- Data length is 2 bytes
                       |            +--- Primary scaling is for 10.24 V
                       |                 bipolar A/D
                       +--- Primary units are volts

5)  If you have an analog alarm, the SSDNHX ANALBL is identical to the
    SSDNHX READNG.
