Agilent_E3631A Power Supply:

- In st.cmd:
# Agilent E3631A triple output power supply
dbLoadRecords("$(IP)ipApp/Db/Agilent_E3631A.db","P=xxx:,S=ps1,PORT=serial1")

- In st_mpfserver.cmd:
tyGSMPFInit("serial1",  0, 0, 9600,'N',2,8,'N',"") /* Agilent E3631A */

- In top level medm screen, related display button:
     display[7] {
             label="Agilent E3631A Power Supply"
             name="Agilent_E3631A.adl"
             args="P=3idd:,S=ps1"
     }

- RS-232 connection:
Needs jumper tying pin 6 (DSR on instrument) to Space (+12V).  This
was done on the xm-octal breakout as follows:

. . . .
. . . .
. . . ._
. . . ._|- jumpered these two together (see XM-Octal manual)

The cable should be connected straight through except for a 2/3 swap
and a 7/8 swap.  Pin 4 could (should?) be disconnected.  In my testing
it didn't seem to matter although the manual says to disconnect it.

- This device sends back CR/LF.  Messages sent out are terminated in
  LF and received messages terminate with CR.