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
Summary of Contents for UPC-3
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Page 17: ...SECTION 1 GENERAL 5 PACIFIC Figure 1 3a SCU UPC 3 Figure 1 3b UPC 3 Figure 1 3c UPC 1 ...
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