DSP TP104-plus Specifikace stáhnout pdf (Strana 138)

6-21

Performance Tests

10. Input Noise

This test measures the lock-in input noise.

Setup

Connect a 50Ω termination to the A input. This grounds the input so the lock-in's own noise is measured.

Procedure

1) {PRESET} (Turn the lock-in off and on with the [Setup] key pressed)

2) Press the keys in the following sequence:

[Sensitivity Down]

Set the sensitivity to 100 nV.

[Channel 1 Display]

Set the Channel 1 display to X Noise.

3) Wait until the reading of Channel 1 stabilizes. Record the value of Channel 1.

4) This completes the noise test. Enter the results of this test in the test record at the end of this section.

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DSP TP104-plus Specifikace Strana 138