Keysight E4980A - Control Output Signals

Keysight E4980A/AL User’s Guide -497
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Electrical Characteristics of the Input/Output Signals
Control Output Signals
The /INDEX and /EOM signals have optocoupled open collector outputs. The
combination of pull-up resistor and pull-up voltage must result in a current
through the optocoupler of less than 6 mA (Refer to Table F-10).
Figure F-8 shows a schematic of the /INDEX and /EOM output circuits.
Figure F-8 Simplified diagram of the output circuits
Table F-10 Output signal electrical characteristics
Signal Name External Pull-up Voltage Maximum Current
/INDEX
/EOM
15 V max. 6 mA
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