Tabor Electronics 5064, Руководство пользователя

Страница: 330 / 369

6
Performance Checks
Test Procedures
6-27
Auxiliary Function: Counter/Timer
Function: Pulse
Width
Trigger Level: 0 V
Test Procedure:
1. Perform Pulse Width Accuracy tests using Table 6-15
Table 6-15, Pulse Width Measurement Accuracy
Function Generator Setting
Frequency Duty Cycle
Error Limits
2074
Counter Reading Pass Fail
10 kHz 50 %
50.00
μ
s
±
100 ns
100 kHz 50 %
5.000
μ
s
±
100 ns
1 MHz 70 %
700.0 ns
±
100 ns
2. Change the counter/timer slope to Negative
3. With the last function generator setting in Table 6-15
4. Verify that the pulse width reading is 300 ns
±
100 ns
Test Results
Pass Fail
Totalize, Gated
Equipment: Function Generator with at least 1 ppm accuracy
Preparation:
1. Configure the function generator as follows:
Frequency: 1 MHz
Wave: Square
Amplitude 500 mV
2. Connect the function generator to the 2074 TRIG IN connector
3. Configure the 2074, as follows:
Auxiliary Function: Counter/Timer
Function: Totalize,
Gated
Gate Time: As required by the test
Trigger Level: 0 V
Test Procedure:
1. Press the Reset/Arm button
2. Perform Totalize, Gated Accuracy tests using Table 6-16
Table 6-16, Totalize, Gate Measurement Accuracy
2074
Gate Time Setting Error Limits
2074
Counter Reading Pass Fail
1.000 s
1000000
±
30
100.0 ms
100000
±
30