Section V
TM 11-6625-2781-14&P-2
ADJUSTMENT PROCEDURES (cont' )
d
5-24. 200 MHz IF Bandpass Adjustment
REFERENCE: Service Sheet 3
DESCRIPTION: A fixed signal is connected to the RF INPUT while sweeping the 200 MHz IF circuits using the first local
oscillator. The second converter is bypassed and replaced with an external mixer also swept by the first local oscillator.
The swept 200 MHz passband is detected with the analyzer display and adjusted for best passband shape.
Figure 5-4. 200 MHz IF Bandpass Adjustment Test Setup
EQUIPMENT:
Signal Generator................................ ................................ ................................ ................................ ......... HP 606B
Amplifier ................................ ................................ ................................ ................................ ..................... HP 461A
Mixer ................................ ................................ ................................ ................................ ...................... HP 10514A
Extender Cable Assembly ................................ ................................ ................................ ............... HP 11592-60015
Interconnecting Cable Assembly ................................ ................................ ................................ ..... HP 11592-60016
Test Cable (2) ................................ ................................ ................................ ................................ . HP 11592-60001
BNC Cable Assembly (2) ................................ ................................ ................................ ........................ HP 10503A
Cable Assembly (1)................................ ................................ ................................ ......................... HP 11592-60013
1. Connect the test setup in Figure 5-4 and make the following control settings:
ANALYZER:
RANGE MHz ................................ ................................ ................................ ................................ ................... 0-110
FREQUENCY ................................ ................................ ................................ ................................ ............... 50 MHz
FINE TUNE................................ ................................ ................................ ................................ ................. Centered
BANDWIDTH ................................ ................................ ................................ ................................ ............... 300 kHz
5-10
