SECTION 9
DIAGNOSTICS
105
9
USER DIAGNOSTICS (cont’d)
9.3
PROBLEM
ERROR Message states
"ERROR - PROGRAMMED OUTPUT
VOLTAGE VALUE EXCEEDS OUTPUT
VOLTAGE RANGE. CHANGE VOLTAGE,
COUPLING or WAVEFORM."
PROBABLE CAUSE:
RMS content of selected Waveform is not great enough to
produce programmed voltage, requiring more system gain
than is available.
If this type of error occurs when the UPC calculates
segment step data for a transient program, the segment just
prior to the one indicated as erroneous may contain a
voltage which cannot be achieved by the segment indicated
(because the active segment may be ramping from a
voltage set in the previous segment).
SUGGESTED CURE:
Change programmed Voltage, or change Coupling (to
XFMR-coupled with a higher voltage range), or change the
selected waveform (either by editing the Waveform or
selecting a Waveform with a greater RMS content). See
(
) to edit a Waveform.
If this problem occurs with transient segments, you may
have to reduce the voltage in the segment prior to the one
indicated as having the error, as well as the one indicated
as having the error. . Transient segments must calculate
for both the starting (preceeding) voltage as well as the
segment final (indicated) voltage.
9.4
PROBLEM
KEYS BEEP when pressed
but display does not respond.
PROBABLE CAUSE:
UPC is in REMOTE CONTROL (check the REMOTE LED
on the keyboard)
SUGGESTED CURE:
Change to LOCAL CONTROL by pressing the
LOCAL
key.
If the REMOTE LED remains ON then the REMOTE
INTERFACE controller has put the UPC into LOCAL
LOCKOUT (LLO). Use the REMOTE INTERFACE
controller to send the GOTO LOCAL (GTL) message or
clear the REN (REMOTE ENABLE) signal from the GPIB
controller. Turning the INPUT POWER to OFF will also
restore LOCAL CONTROL.
