HP 8642A Operation And Calibration Manual page 231

Model 8642A/B
Operation
Operating Messages (cont'd)
SYS CONTROL DISABLED .131
HP-IB system control capabilities were just disabled. The HP-IB address was just set which disables the
Signal Generator's system control capabilities accessed with Special Function 3. (Refer to the Service
Manual or On-Site Manual for information about using Special Function
3
for servicing the instrument.)
ADRS=LISTEN ONL Y .132
The instrument is configured as a listen-only device over HP-IB. Refer to HP-IB Address (page 3-8) in
the HP- IB portion of this Section III.
LISTEN ONLY DISABLED .133
The instrument is no longer configured as a listen -only device. The instrument's HP- IB address setting
was changed from 31 to a value between 00 and 30. Refer to HP-IB Address (page 3-8)
1Il
the HP-IB
portion of this Section III.
WAIT FOR FM LOOP LOCK .140
Wait for the Signal Generator's internal FM circuitry to complete its setting. This message cannot be read
via HP-JB using Output Display because it automatically clears from the display after execution
completes. This message is displayed when switching from a dc-coupled FM source to a non-de-coupled
FM source. No additional external settling time allowance is necessary to settle within 100 Hz of the
selected frequency.
RF.FREQ=DISPLA Y -0.9 HZ .149
RF.FREQ=D!SPLA Y -0.8 HZ .148
RP.FREQ=DISPLAY -0.7 HZ .147
RF.FREQ=DISPLA Y -0.6 HZ .146
RF.FREQ=DISPLA Y -0.5 HZ .145
RF.FREQ=DISPLA Y -0.4 HZ .144
RF.FREQ=DISPLA Y -0.3 HZ .143
RF.FREQ=DISPLA Y -0.2 HZ .142
RF.FREQ=DISPLA Y -0.1 HZ .141
RF.FREQ=DISPLA Y +0.1 HZ .151
RF.FREQ=DISPLA Y +0.2 HZ .152
RF.FREQ=DISPLA Y +0.3 HZ .153
RF.FREQ=DISPLA Y +0.4 HZ .154
RF.FREQ=DISPLA Y +0.5 HZ .155
RF.l;'REQ=DISPLA Y +0.6 HZ .156
RF.FREQ=DISPLA Y +0.7 HZ .157
RF.FREQ=DISPLA Y +0.8 HZ .158
RF.FREQ=DISPLA Y +0.9 HZ .159
The current RF output frequency is now summed with one of these 0.1 Hz steps listed in messages 141
through 149 and 151 through I 5 9 that were accessed with either Special Function 240 (Decrement
Frequency by 01 Hz) or Special Function 241 (Increment Frequency by 0.1 Hz). The RF frequency
addition is automatically deleted with any specific frequency setting or change. These messages are
queued up and can be displ3.yed using ( MSSG I.
HP-IB: Execute "MG" and read the display. Perform this entire process repeatedly to see the RF
frequency addition message. Note that reading these messages over the bus (using MG) could cause
transient hardware and service messages to be deleted from the message list (refer to Queued Up Messages
on page 3-180)
CRUNCH CRUNCH MMMMMMM .160
Amplitude sweep is possible and is currently being set. This message cannot be read via HP-IB using
Output Display because it automatically clears from the display after execution completes.
3-195