Tabor Electronics 5251, Руководство пользователя

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TE5251
User Manual
5-34
Pulse Width
Equipment: Function Generator with at least 1 ppm accuracy
Preparation:
1. Configure the function generator as follows:
Frequency: As required by the test
Wave: Square
Duty Cycle: As required by the test
Amplitude 500 mV
2. Connect the function generator to the 5251 TRIG IN connector
3. Configure the 5251, as follows:
Auxiliary Function: Counter/Timer
Function: Pulse
Width
Trigger Level: 0 V
Test Procedure:
1. Perform Pulse Width Accuracy tests using Table 20
Table Chapter 5-20, Pulse Width Measurement Accuracy
Function Generator Setting
Error Limits
5251
Counter Reading Pass Fail
Frequency Duty Cycle
10 kHz 50 %
50.00
μ
s
±
100 ns
100 kHz 50 % 5.000
μ
s
±
100 ns
1 MHz 70 %
700 ns
±
100 ns
2. Change the counter/timer slope to Negative
3. With the last function generator setting in Table 28, change the
function generator duty cycle to 70 %
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
Run Mode: Burst
Burst Count: 100
2. Connect the function generator to the 5251 TRIG IN connector
3. Configure the 5251, as follows:
Auxiliary Function: Counter/Timer
Function: Totalize,
Gated
Trigger Level: 0 V