Agilent Technologies 8590 Series Service Manual page 133

Figure 2-31 External ALC Verification Adjustment
10.Connect the equipment as shown in
only: Use the 75 Ω power sensor with an adapter, instead of the 50 Ω
power sensor.
75 Ω input only: Press
11.Set the DMM to measure dc volts.
12.Set the analyzer by pressing the following keys.
13.Ensure that the power meter reads −2 ±2 dB, then press
HOLD
14.On the analyzer, press
15.Adjust the SRC PWR for 0 dBV by turning the front-panel knob on
the analyzer. Note that the display will read the power dBm.
16.Note the voltage on the DMM. This is the error at source power
0 dBV. Record the automatic leveling control (ALC) voltage in the
space provided.
Chapter 2
AMPLITUDE
, 300,
FREQUENCY MHz
, 0,
SPAN Hz
,
AUX CTRL TRACK GEN
on the power meter.
More 1 OF 2
ALC voltage at 0 dBV # = ______________volts dc
20. Checking the External ALC for Option 010 or 011
Figure 2-31. For Option 011
, ,
More 1 of 2
, (ON), 2,
SRC PWR ON OFF
,
ALC MTR INT XTAL
Making Adjustments
, .
AMPTD UNITS dBm
−dBm
.
RANGE
(MTR).
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