Tabor Electronics 5251, User Manual

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TE5251
User Manual
5-6
Table Chapter 5-3, Frequency Accuracy Using External 10 MHz Reference
5251 Setting Error Limits Counter Reading Pass Fail
10.000000000 MHz
±
1 Hz
50.000000000 MHz
±
5 Hz
Amplitude
Accuracy
Amplitude accuracy checks tests the accuracy of the output amplifier
and attenuators. Each channel has its own set of amplifiers and
attenuators and therefore, the accuracy is tested on each channel
separately. Amplitude path is checked for both the DAC route
(arbitrary and standard waveforms) and the DDS route (CW and
modulated waveforms).
Amplitude Accuracy,
DAC Output
Equipment: DMM
Preparation:
1. Configure the DMM as follows:
Termination: 50
Ω
feedthrough at the DMM input
Function: ACV
2. Connect 5251 Channel to the DMM input
3. Configure the 5251 as follows:
Frequency: 1 kHz
Output: On
Amplitude:
As specified in Table 4
Test Procedure:
1. Perform amplitude Accuracy tests using Table 4
Table Chapter 5-4, Amplitude Accuracy, DAC output
5251 Amplitude
Setting Error Limits DMM Reading Pass Fail
10.00V 3.534V,
±
60mV
5.000V
1.767V,
±
42mV
500mV 176.7mV,
±
6.7mV
50.00mV
17.67mV,
±
2.1mV
Amplitude Accuracy,
DDS Output
Equipment: DMM
Preparation:
1. Configure the DMM as follows:
Termination: 50
Ω
feedthrough at the DMM input
Function: ACV
2. Connect 5251 output to the DMM input
3. Configure the 5251 as follows: