User's Manual

351804-1 Rev. 100

COM5000-8 TECHNICAL MANUAL

CHAPTER 5

MAINTENANCE

5.1 INTRODUCTION

The maintenance chapter contains a list of recommended test equipment, and instructions for mechanical

disassembly, for verifying the performance of the amplifier, for routine adjustments, and for aligning the

Transmitter.

For maintenance refer to the Transmitter Interconnect Wiring diagram 351803, figure 5.1.

5.2 RECOMMENDED TEST EQUIPMENT

Equipment Manufacturer

RF Signal Generator Agilent model N5171B

Wattmeter Bird model 4421

10 kW sensor Bird model 4024

1 kW sensor Bird model 4021

50 ohm Load, 10kW Bird model 8931-230*

Directional Coupler, 10kW Werlatone model C1449

50 ohm Load/Attenuator, 4kW Bird model 8329-300 with BA-230*

20dB Attenuator, 1W Mini-Circuits model HAT-20

Variable Step Attenuator JFW model 50BR-017

Spectrum Analyzer Agilent model N9320B

Oscilloscope Tektronix model TDS2012C

DVM Fluke model 77

*Uses 230VAC blowers. For 115VAC, change -230 to -115 in model number.

Note: Equivalent equipment may be substituted.

5.3 PERIODIC MAINTENANCE

The only items that require regular maintenance are the air filters. The filters should be removed and

cleaned periodically at a frequency determined by the operating environment. The filters are located on the

front panel of the modules.

To remove the filters simply pull out the filter from the bracket.

The filter can be washed with a diluted soap solution. Dry the filter completely before replacement.

5.4 MODULE AND SUBASSEMBLY MAINTENANCE

All factory supplied spare modules and subassemblies are aligned prior to shipment and adjustments are

normally not required following replacement of a particular subassembly obtained from the factory. The

following maintenance procedures are intended for use if minor repairs have been performed in the field or

for other reasons the equipment requires alignment.