Agilent Technologies E4416A Service Manual page 90

9 Round off the DVM reading to the nearest microvolt and record this value as
V .
0
• V
• Disconnect the DVM negative input lead from the V
test power meter and reconnect it to chassis ground.
10 Turn the power reference on:
• Press
11 Record the reading on the DVM to two decimal places. This is V
• V
12 Reconnect the negative lead to the VRF connector on the rear panel of the
Agilent 432A. The DVM is now set up to measure V
power reference oscillator output level.
13 Calculate the required value of V
V
1
14 Remove the power meter's cover and adjust A2R90 until the DVM indicates
the calculated value of V
E4416A/E4417A Power Meters Service Guide
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________________ V
0
Zero
, Power Ref On
Cal
_____________V
comp
2
V
= V + V – –
comp
comp 0
. Refer to
1
RF
which represents the
1
using equation 2.
1
3 –
( ) ( ) CalibrationFactor (
10 4R
Figure 3- 4 for the position of A2R90:
Adjustments 3
connector on the
.
comp
)
69