HP 181A Manual do Utilizador Página 70

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Chapter 1 Performance Tests
Test 1: Trigger Level (HP 53181A Only)
1-48 Assembly-Level Service Guide
1
Test 1: Trigger Level (HP 53181A Only)
This test verifies the Trigger Level accuracy of the HP 53181A Frequency
Counter.
Equipment
HP 3325B Synthesizer
HP 10503A BNC Cable
Counter Setup
1Cycle the POWER key to preset the Counter.
2 Set CHANNEL 1 input condition to:
Trigger/Sensitivity,
AUTO TRG: OFF
Trigger/Sensitivity,
LEVEL: 0.000V
50
/1M
, 50
DC/AC, DC
X10 Attenuate, Off
100kHz Filter, Off
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