Figure B-1: Option 40 Cable Connections For Level Accuracy And Flatness Check; Table B-3: Example Test Signals For Level And Flatness Test - Tektronix VM700T User Manual

Appendix B: Verification Procedure
B-4
NOTE. For this connection, you may want to use the two female XLR to male
mini XLR adapter cables supplied with the VM700T. If you do, you will need to
furnish or fabricate an adapter on the signal generator end.

Figure B-1: Option 40 cable connections for level accuracy and flatness check

3. Press the Measure hard key, select Audio, and run the Audio Analyzer
measurement.
4. Using a known accurate sine-wave generator (or one verified with an
accurate AC voltmeter), apply a 120 Hz input to the Audio option at
amplitudes –20 dBu (for example, +18, +8, –2, –12 dBu) and verify that
the level accuracy is
5. Select at least 6 frequencies and 10 amplitudes over the listed range to test .
The frequencies and amplitudes you select must be in the ranges listed in
Table B-2 (use a signal amplitude level of –70 dBu to test for worst case).
Table B-3 shows an example selection of test frequencies and amplitudes.

Table B-3: Example Test Signals for Level and Flatness Test

Frequency
30 Hz
100 Hz
1 kHz
5 kHz
12 kHz
20 kHz
VM700T Option 40/41/42 Audio Measurements User Manual
0.1 dB.
Amplitudes
–10 dBu, –21 dBu, –40 dBu, –49 dBu,
–51 dBu, –55 dBu, –59 dBu,
–61 dBu, –65 dBu, –70 dBu
To Option 40 Audio
Input Connectors