Technical data

Service 1
Agilent 1000A Series Oscilloscopes Service Guide 19
13 For each of channel 1’s vertical sensitivities in the DC Gain Test section
of the “Performance Test Record” on page 35:
a For the positive (+) power supply setting:
i Record the DMM voltage reading as VDMM+.
ii Record the oscilloscope Vavg reading as VScope+.
b For the negative (- ) power supply setting:
i Record the DMM voltage reading as VDMM-.
ii Record the oscilloscope Vavg reading as VScope- .
c Calculate the DC Gain using the following expression and record this
value in the DC Gain Test section of the Performance Test Record:
14 Repeat step 15 through step 23 for channel 2 on two-channel
oscilloscope models or for channels 2, 3, and 4 on four- channel models.
15 Set the power supply voltage to +6 mV.
16 Move the BNC cable from the previously tested channel to the channel
you are currently testing.
Figure 3 Vavg Menu Item
Vavg
measurement
DCGain =
ΔV
out
ΔV
in
---------------
=
V
scope+
– V
scope-
V
DMM+
– V
DMM-
--------------------------------------------