Keysight E4980A/AL User’s Guide -499
Scanner Interface
Signal Input/Output Connector
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The scanner system will operate more efficiently when the following
input/output control signals are used:
Step 1. Set the scanner channel to CHANNEL 0, the first scanner channel.
Step 2. Set the channel selection signals (/CH0 to /CH7) and the channel valid signal
(/CH_VALID) to compensate CHANNEL 0.
Step 3. Trigger the E4980A/AL with a trigger pulse input through the scanner
input/output connector on the rear panel The E4980A/AL will acknowledge
the channel number as CHANNEL0 and then measure the device connected
to scanner channel 0 using the correction data for it.
Step 4. Disassert /CH_VALID after disasserting /INDEX.
Step 5. Set the scanner channel, channel selection signals, and the channel valid
signal to the next channel to be measured when /INDEX is asserted.
Step 6. After /EOM is asserted, the E4980A/AL is ready to make the next
measurement.
Step 7. Repeat Step 4 through Step 6.
8 /CH1 Input Channel Selection Signal
9 /CH3
10 /CH5
11 /CH7
12 EXT_TRIG Input External Trigger Signal
13 /EOM Output End-of-Measurement Signal
14 COMMON - Common for EXT. DCV
Assertion timing for these signals is different from normal measurements
and list sweep measurements.
Table F-7 Scanner interface I/O connector pin assignments
Pin No. Signal Name Input/Output Description
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