Tabor Electronics 5064, User Manual

Page: 314 / 369

6
Performance Checks
Test Procedures
6-11
Trigger operation
Characteristics
This tests the operation of the trigger circuit. It includes tests for the
triggered, gated and counted bursts run modes. It also tests the
operation of the trigger advance options, the delayed trigger and re-
trigger functions, as well as the trigger input level and slope sensitivity.
The run modes are common to all channels however, each channel
has its own trigger circuit and therefore, each channel must be tested
separately.
Trigger, Gate, and
Burst
Characteristics
Equipment: Oscilloscope, function generator, counter
Preparation:
1. Configure the Oscilloscope follows:
Termination: 20 dB, 50
Ω
feedthrough attenuator at the
oscilloscope input
Setup: As required for the test
2. Connect 2074 Channel outputs to the oscilloscope input
3. Configure the function generator as follows:
Frequency 1 MHz
Run Mode: As required by the test
Wave: TTL Square
4. Connect the function generator output to the 2074 TRIG IN
connector
5. Configure the 2074 as follows:
Frequency: 25 MHz
Waveform: Sinewave
Burst Count:
1e6 counts, each channel
Amplitude: 1 V
Trigger Source: External
Output: On
Test Procedure
1. Perform trigger and gate tests using Tables 6-10
2. Configure the counter to TOTB Measurements and perform
burst tests using Tables 6-10. Set counter trigger level to
100mV.
Table 6-10, Trigger, gate, and burst Characteristics.
2074 Run External Trigger Oscilloscope Reading
Mode Pulse CH1, CH2, CH3, CH4 Pass Fail
Triggered 1 MHz, Continuous Triggered waveform
Gated 1 MHz, Continuous Gated Waveform
Burst Single shot Burst, 1e6 waveforms