Telewave, Inc.
Model 44A/AP
Page 13
6 MAINTENANCE
6.01 The Model 44A/AP Wattmeter is designed with high reliability com-
ponents and operates on low DC power levels. It can be expected to
operate at peak performance for long intervals. Periodic calibration
by Telewave or an RF standard laboratory is recommended to main-
tain peak instrument performance.
Warranty Service
6.02 The Model 44A/AP Wattmeter is covered under Telewave’s stan-
dard 1 year warranty. See the inside back cover for exact terms.
Faulty units should be returned to:
Telewave, Inc.
ATTN: Repairs
660 Giguere Court
San Jose, CA 95133
1-800-331-3396 / +1 408-929-4400
6.03 A Return Material Authorization (RMA) is required when prod-
ucts are returned to Telewave. The following information will be
requested in order to assign an RMA:
• The Model 44A/AP serial number. The ID plate is located
on the top of the instrument. Include the date of purchase and
Purchase Order number if known.
• A brief statement of the problem.
• Contact name, telephone number, and return shipping address.
Calibration
6.04 Adjustments to the instrument should be performed by Telewave, or
other RF calibration laboratory. Calibration or adjustment should be
made at a frequency of 467 MHz when possible. If it is necessary
to perform calibration below 150 MHz, consult Figure 7-1 for the
correction factor. The adjustment potentiometers are located on the
main PC board inside the instrument. Refer to Figure 3-1 and 6-1.
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