Acquire The Zero Input Data - HP 1660E Series Service Manual

Testing Performance
To
test the offset accuracy (oscilloscope)
Acquire the zero input data
1 Disconnect the power supply from the channel input.
2 Press the Chan key. Move the cursor to the V!Divfieldand press the Select key.
3 Press the blue shift key, then press the Run key. After approximately 15 seconds
(averaging complete), press the Stop key. Read the voltage from the Markers
voltage field (0.00 V
±
320 m V) and enter the value in the perfonnance test record.
4 Use the RPG knob to dial in 1 V!Div. Press the blue shift key, then press the Run
key. After approximately 15 seconds (averaging complete), press the Stop
1
~y.
Read the voltage from the Markers voltage field (0.00 V
±
80 m V) and enter the value
in the perfonnance test record.
5 Use the RPG knob to dial in 100 mV!Div. Press the blue shift key, then press the Run
key. After approximately 15 seconds (averaging complete), press the Stop key.
Read the voltage from the Markers voltage field (0.00 V
±
8 m V) and enter the value
in the perfonnance test record.
6 Use the RPG knob to dial in 10 mV!Div. Press the blue shift key, then press the Run
key. After approximately 15 seconds (averaging complete), press the Stop key.
Read the voltage from the Markers voltage field (0.00 V
±
800 f.L V) and enter the value
in the perfonnance test record.
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