User manual

Adjustments
2-6
P6015A Instruction Manual
The long-form adj ustment procedure consists of three parts which
must be performed in this order:
1. DC attenuation check and adjustment
2. Low-frequency compensation check and adjustment
3. Transient response check and adjustment
A fourth step, verification of bandwidth and rise time, is performed
only when this procedure is used as a performance verification
procedure.
DC Attenuation
1. Connect the P6015A compensation box to the oscilloscope.
2. Connect a BNC male-to-GR adapter to the calibration generator
high/standard amplitude output. Connect the P6015A ground lead
to the outer fin of the GR connector.
WARNING. The c alibration generator produces hazardous voltages
during these procedures. To avoid electrical shock, be careful not to
touch the GR c enter conductor or exposed portions of the probe tip
while the generator is on.
3. Insert the P6015A tip into the GR center conductor.
4. Set the calibration generator to standard amplitude output of
50 Volts. This setting on a PG 506A produces a 1 kHz square
wave.
5. Set the oscilloscope time base to display 500 s/div, and set the
vertical deflection to 10 mV/di v (10 V/div when using the
readout option).
6. Center the waveform on the screen.
7. The waveform am plitude should be between 4.85 and 5.15
divisions. If necessary, adjust R9 for five divisions. Use the
trailing portion of the square wave if the leading corner is not
flat. See Figure 2--2 for the location of this and other adjustments.