Pacific Power Source UPC-3 - Problem: UPC Does Not Respond to RS-232

SECTION 9 DIAGNOSTICS
114
9 USER DIAGNOSTICS (cont’d)
PROBLEM
UPC does not respond to the RS-232,
or responds with a COMMAND ERROR message.
PROBABLE CAUSES –
Incorrect communication parameters, i.e., Serial baud rate,
parity or number of data/start/stop bits.
Handshaking signals may not be wired correctly
SUGGESTED CURE:
Verify parameter settings match that of host computer. See
section 10.3, 10.4.
PROBLEM
UPC displays "TRANSITION IN PROGRESS"
for an extended length of time upon power-up.
PROBABLE CAUSES –
A long Transition time was programmed into the UPC. The
UPC may execute the previously executed Program
parameters or MANUAL MODE parameters upon power-
up, depending on the INITIAL VOLTAGE setting.
SUGGESTED CURE:
If it is desired to terminate the Transition, press the TRANS
key. To prevent the UPC from beginning the Transition,
hold the fn key down while applying power with the INPUT
POWER switch