Stanford Research Systems SR844, User Manual

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5-10 Performance Tests
SR844 RF Lock-In Amplifier
CH2 Display once
Set the CH2 display to
θθθθ
(degrees).
Sensitivity Down
once
Select 300 mV sensitivity.
3) Phase response is checked at various frequencies. For each frequency in the table below, perform
steps 3.1 through 3.2.
Test Frequencies
100 kHz
300 kHz
1 MHz
3 MHz
10 MHz
30 MHz
100 MHz
3.1) Set the RF synthesizer to the frequency in the table.
3.2) Wait for the SR844 UNLOCK indicator to turn off.
3.3) Wait for the CH2 reading to stabilize. Record the CH2 reading (degrees).
4) This completes the phase response test. Enter the results of this test into the test record at the end
of this chapter.