Keysight 81150A - Page 132

Appendix
132
Front Panel
Operation
Press the External In Threshold softkey to select from the pre-defined
threshold settings (TTL or ECL). Use the numeric keypad or the rotary knob
to select any other threshold voltage.
Remote Interface
Operation
:ARM:LEVel <threshold voltage>
Input Impedance
Introduction
81150A: The Input Impedance of the External In connector can be set to
50  or 10 k.
81160A: The Input Impedance of the External In connector can be set to
50  or 1 k.
Front Panel
Operation
Press the External In Impedance softkey to select the Input Impedance.
Remote Interface
Operation
:ARM:IMPedance <input impedance>
The value will be rounded to the allowed settings.
Hysteresis
Introduction
81160A only: The Hysteresis of the External In connector can be set to High
or Low. Select ‘High’ for Input signals that have slow transition times and
that may be noisy. Select ‘Low’ for input signals with fast transitions.
Front Panel
Operation
Press the Hysteresis softkey to select the Hysteresis.