Stanford Research Systems SR850 User Manual page 253

Press
[AUTO PHASE]
The bottom display should read 0.0°.
7. Press
[INPUT/FILTERS]
<Line Notches> to select Line
[GAIN/TC]
<Sensitivity>
Adjust the Line Notch Depth pot until R (top display) is between 20.0 and 25.0 mV.
Then adjust the Line Notch Freq pot to minimize the reading of R AND until
EITHER 0° or 180° (within 1°).
8. Now adjust the Line Notch Depth pot until R is less than 1.0 mV
9. Press
[INPUT/FILTERS]
<Line Notches> three times to select Out
[GAIN/TC]
<Sensitivity>
[REF/PHASE]
<Ref. Frequency> Select Reference Frequency
After the readings are stable, the top display should read 1.00 V (±2%).
Press
[AUTO PHASE]
The bottom display should read 0.0°.
10. Press
[INPUT/FILTERS]
<Line Notches> twice to select 2xLine
[GAIN/TC]
<Sensitivity>
Adjust the 2xLine Notch Depth pot until R (top display) is between 20.0 and 25.0 mV.
Then adjust the 2xLine Notch Freq pot to minimize the reading of R AND until
is EITHER 0° or 180° (within 1°).
11. Now adjust the 2xLine Notch Depth pot until R is less than 1.0 mV
12. This completes the notch filter adjustment procedure.
13. Turn the unit OFF. Replace the top lid. The lid slides forward and down to engage the clip at the
center front. Replace the four black screws to secure the lid.
Rotate the knob to select 50 mV full scale
Rotate the knob to select 1V full scale
[1] [2] [0] [ENTER] Enter 120 Hz OR
[1] [0] [0] [ENTER] Enter 100 Hz
Rotate the knob to select 50 mV full scale
8-7
SR850 Service
(bottom display) is
(bottom display)