Front-Panel Operation; Front And Rear Panels; Polarity; Gain - Stanford Research Systems SIM983 Operation And Service Manual

1.2 Front-Panel Operation

1.1.1 Front and rear panels

1.2 Front-Panel Operation

1.2.1 Polarity

1.2.2 Gain

SIM983 Scaling Amplifier
Figure 1.2: The SIM983 front and rear panels.
The polarity is the sign of the gain. It is indicated on the upper display
of the front panel. To change the polarity, press the [polarity] button
once. Holding this button has no e ect.
Pressing [polarity] has no e ect on the input-referred o set. How-
ever, a simultaneous press of [polarity] and one of [gain
special meaning. This press initiates autocalibration (Section 2.2).
The gain G can be set to an absolute value between 0.01 and 19.99. To
raise or lower the absolute value of the gain, press the button [gain ]
or the button [gain ]. The decimal point position of the gain dis-
played on the front panel is fixed, so the resolution of the gain is 0.01.
If [gain ] is pressed when the gain G
If [gain ] is pressed when G
either [gain ] does not change the polarity.
19 99 the press has no e ect.
0 01 the press has no e ect. Pressing
1 – 3
] has a