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MTG100 & MTG300 MPEG Generator Service Manual
5Ć1
Adjustment Procedures
This section contains information needed to adjust the MPEG generator.
The only adjustment in the MPEG generator is for the clock frequency.
Requirements for Adjustment
Before doing the adjustment, note the following requirements.
This procedure is only to be performed by trained service technicians.
This MPEG generator requires a 20 minute warm-up time in a +20_ C to +30_ C
environment before it is adjusted. Adjustment done before the operating
temperature has stabilized may cause errors in performance.
When adjusting the internal clock frequency, you need to remove the cabinet. For
removal and installation procedures for the cabinet, refer to Cabinet on
page 6-18.
Equipment Required
Table 5-1 lists the equipment required to adjust the internal clock frequency.
Table 5Ć1: Equipment required
Item No. Required precision Recommended equipment
Frequency counter 1 Frequency range: 0.1 Hz to 1250 MHz
Accuracy: < 0.6 ppm
Anritsu MF1603A
Probe 1 X10 Tektronix P6139A
Personnel
WarmĆUp Period
Access