Front Panel Display Test; Keypad Test; Performance Tests - Stanford Research Systems SR830 Manual

Dsp lock-in amplifier
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Performance Tests

Front Panel Display Test

Keypad Test

Spurious
TTL SYNC
Recommended
2. AC Calibrator
Freq Range
Amplitude
Accuracy
External phase locking capability
Recommended
3. DC Voltmeter
Range
Accuracy
Recommended
4. Feedthrough Terminations
Impedance
To test the front panel displays, press the [Phase] and [Freq] keys
together. All of the LED's will turn on. Press [Phase] to decrease the
number of on LED's to half on, a single LED and no LED's on. Use the
knob to move the turned on LED's across the panel. Press [Freq] to
increase the number of on LED's. Make sure that every LED can be
turned on. Press any other key to exit this test mode.
To test the keypad, press the [Phase] and [Ampl] keys together. The
CH1 and CH2 displays will read 'Pad code' and a number of LED indica-
tors will be turned on. The LED's indicate which keys have not been
pressed yet. Press all of the keys on the front panel, one at a time. As
each key is pressed, the key code is displayed in the Reference display,
and nearest indicator LED turns off. When all of the keys have been
pressed, the display will return to normal. To return to normal operation
without pressing all of the keys, simply turn the knob.
6-2
≤ -55 dBc
available
SRS DS335
10 Hz to 100 kHz
1 mV to 10 V
0.1%
Fluke 5200A
19.999 V, 4 1/2 digits
0.005%
Fluke 8840A
50 Ω

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