Procedure; A4 Linear Fidelity Adjustment - HP 8560E Service Manual

Procedure

1. Press to turn the spectrum analyzer off. Remove the spectrum
LINE
analyzer cover and place the spectrum analyzer in the service
position as illustrated in
page 85 for adjustment location.
2. Connect the HP 3335A 50 Ω output to the HP 8560E/EC 50 Ω input.
Press to turn the spectrum analyzer on.
LINE
3. Set the HP 8560E/EC controls as follows:
Center frequency ................... ....................................... 15 MHz
Span ........................... .............................................................. 0
Reference level ................. ........................................... −10 dBm
Log/division .......... ............................................... 1 Log/division
Resolution BW ................... .......................................... 300 kHz
IF Adjust ........................... ...................................................... off
4. Set up an HP 3335A as follows:
Frequency .................. ....................................................15 MHz
Amplitude .............. ..................................................... −18 dBm
5. Press and
CAL ADJ CURR IF STATE
complete adjustments, then press
6. Adjust A4R445 for maximum on-screen amplitude. Refer to
2-7 on page 76 for the location of A4R445.

A4 Linear Fidelity Adjustment

This adjustment consists of adjusting A4R544 until the delta marker
reads −40 dB under the following conditions.
Procedure
1. Press to turn the spectrum analyzer off. Remove the spectrum
LINE
analyzer cover and place the spectrum analyzer in the service
position as illustrated in
page 76 for adjustment location.
2. Connect the HP 3335A 50 Ω output to the HP 8560E/EC 50 Ω input.
Press to turn the spectrum analyzer on.
LINE
3. Press ,
PRESET AMPLITUDE
, and
CAL IF ADJ OFF
4. Set the HP 8560E/EC controls as follows:
Center frequency ...................... .................................... 15 MHz
Span ....................... .......................................................... 5 MHz
Resolution BW ...................... ....................................... 300 kHz
Reference level..................... ....................................... −10 dBm
Chapter 2
Figure 2-8 on page
, wait for the spectrum analyzer to
.
MKR
Figure 2-6 on page
, ,
LINEAR MORE 1 of 3
.
Adjustment Procedures
5. DC Log Amplifier Adjustments
84. See Figure 2-9 on
Figure
75. See Figure 2-7 on
, ,
AMPD UNITS dBm
,
81