Section V
TM 11-6625-2781-14&P-2
ADJUSTMENT PROCEDURES (cont' )
d
5-27. 100 kHz Reference Oscillator Check
REFERENCE: Service Sheet 7.
DESCRIPTION: An external power supply is connected to the 100 kHz reference oscillator. The supply is varied to
check the frequency stability.
Figure 5-9. 100 kHz Reference Oscillator Check Test Setup
EQUIPMENT:
Oscilloscope ................................ ................................ ................................ ......................... HP 180A/1801A/1821A
Digital Voltmeter ................................ ................................ ................................ ............................ HP 3440A/3443A
Power Supply................................ ................................ ................................ ................................ ............ HP 6217A
Test Cable ................................ ................................ ................................ ................................ ...... HP 11592-60001
Cable Assembly ................................ ................................ ................................ ................................ ...... HP 11000A
Cable Assembly ................................ ................................ ................................ ................................ ...... HP 11002A
Extender Cable Assembly ................................ ................................ ................................ ............... HP 11592-60015
Interconnecting Cable Assembly ................................ ................................ ................................ ..... HP 11592-60016
1. Connect the setup in Figure 5-9 and make the following control settings:
ANALYZER:
RANGE MHz ................................ ................................ ................................ ................................ ................... 0-110
SCAN WIDTH ................................ ................................ ................................ ................................ ....PER DIVISION
SCAN WIDTH PER DIVISION ................................ ................................ ................................ ....................... 20 kHz
TUNING STABILIZER................................ ................................ ................................ ................................ ...........On
5-16
