Canberra 2015A - Current Measurements; Amplifier Operational Checks

+24 V dc +23.98 to +24.02 V dc
–24 V dc –23.98 to –24.02 V dc
+12 V dc + 11.99 to + 12.01 V dc
–12 D dc – 11.99 to –12.01 V dc
Current Measurements
Apply power to the 2015A and measure the currents. They should be within the fol
-
lowing ranges:
+24 V dc 40 to 0 mA
+12 V dc 150 to 170 mA
– 12 V dc 60 to 80 mA
– 24 V dc 40 to 60 mA
Note: A greater deviation in currents indicates a faulty unit. Gross errors would
probably be due to faulty or reversed capacitors, shorted or open AMP Out-
put transistors, etc.
Amplifier Operational Checks
Setup
1. Set controls as follows:
Model 2015A Controls:
COARSE GAIN: 4
FINE GAIN: 10
SHAPING: 2 µs (internal)
POLE ZERO: fully CCW
INPUT POLARITY: POS
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Amplifier Operational Checks