Chapter 2 Service
Calibration Procedures
Assembly Level Service Guide
2-11
2
5
Turn on the Agilent 53147A/48A/49A and then wait for at least
30 minutes to allow the internal temperature of the instrument
to stabilize.
6
Connect an Agilent E9635A adapter to the Power Meter
OUTPUT
connector
as shown in Figure 2-2.
7
Connect an Agilent 10503 series cable from the Agilent E9635A adapter
on the Agilent 53147A/148A/149A’s Power Meter
OUTPUT
connector to
the
CHANNEL 1
input connector on the Agilent 53150A/51A/52A
Frequency Counter.
8
Set the Agilent 53150A/51A/52A Frequency Counter to measure frequency
on Channel 1.
9
Turn on the Agilent 53147A/148A/149A’s internal power reference oscillator:
Press
Shift
+
Menu
, use the up and/or down arrow keys to cycle through
the menu to
PWR REF
, press the right-arrow key, then use the up or down
arrow key to change the setting to
ON
, and press the
Enter
key. The
Pwr Ref
annunciator should now be activated.
NOTE
The reference oscillator is normally off. It is turned on automatically
during calibration and then turned back off when calibration is complete.
Setting
PWR REF
in the 53147A/148A/149A’s menu to
ON
turns the power
reference oscillator on, and it remains on until the
PWR REF
menu setting
is returned to
OFF
. When you calibrate the Power Meter with
PWR REF
set to
ON
, the power reference oscillator remains on after calibration is
complete.
10
Insert a small, non-conductive, slot-type adjustment tool into the hole
in the side of the power reference oscillator shield (see Figure 2-3).
This opening allows access to L9, the adjustable inductor that is used to
adjust the frequency of the power reference oscillator.
Summary of Contents for 53147A
Page 6: ...Contents vi Assembly Level Service Guide ...
Page 13: ...1 Performance Tests Verifying Specifications ...
Page 55: ...2 Service ...
Page 88: ...Chapter 2 Service Troubleshooting the Instrument 2 34 Assembly Level Service Guide 2 ...
Page 89: ...3 Replacing Assemblies Disassembly and Reassembly ...
Page 104: ...Chapter 3 Replacing Assemblies Removing the Power Supply 3 16 Assembly Level Service Guide 3 ...
Page 105: ...4 Replaceable Parts ...
Page 116: ...Chapter 4 Replaceable Parts Parts Identification 4 12 Assembly Level Service Guide 4 ...
Page 117: ...5 Backdating ...
Page 119: ...6 Specifications ...
Page 125: ...A Rack Mounting the Instrument ...
Page 134: ...Index Index 4 Assembly Level Service Guide Index ...