External Auxilhry Input (AUX INPUT)

Inputvoltagelimits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1OVto +lOV

External AM Input (EXT AM)

fl volt into a 5 kQ resistor, 1 kHz maximum, resulting in approzimately 8 dB/volt amplitude modulation.

External Trigger (EXT TRIGGER)

Triggers on a positive or negative ‘ITL transition or contact closure to ground.

EXT TRIGGER

-TO SWEEP

 

TRIGGER

 

CIRCUITRY

pg6145d

Figure 7-1. External Trigger Circuit

Test Sequence Output (TEST SEQ)

This connector outputs a TI’L signal which can be programmed by the user in a test sequence to be high or low. By default, this output provides an end-of-sweep TI’L signal. (For use with part handlers.)

Limit lkst output (LIMIT TEST)

This connector outputs a TTL signal of the limit test results Pass: lTL high; fail: TTL low.

Test Port Bias Input (BIAS CONNECIJ)

Maximum voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . + 30 Vdc

Maximum current (no degradation in RF specifications) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . f200 mA

Maximum current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . fl A

Video Output (VGA OUT)

The.VGA OUT connector drives VGA compatible monitors with these characteristics:

q640 (horizontal) x 480 (vertical) resolution

q59.83 Hz vertical refresh rate

cl 16.716 mS vertical time

q31.41 kHz horizontal refresh rate

q31.840 PS horizontal time

q75 ohm video input impedance

qvideo analog amplitude 0.7 Vp-p

qnegative true TlL logic for vertical and horizontal synchronization

7-18 Specifications and Measurement Uncertainties

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HP 8753E manual External Auxilhry Input AUX Input, Video Output VGA OUT