TB 11-6625-821-35
4. General Instructions
a. Calibration Reporting. During the performance of this procedure, annotate DA
Form 2416 Calibration Data Card in accordance with TM 38-750. Adjustments to be
annotated on DA Form 2416 are followed by (R) in this procedure.
b. Unit Under Test. Direction Finder Set Test Set AN/ARM-93 is the item being
calibrated and will be referred to as the unit under test in the remaining text.
Note
Be familiar with the entire procedure prior to performing
calibration.
5. Difference Among Models. None.
SECTION II
CALIBRATION
The equipment required for performance checks and
6. Equipment Required.
available, use an equivalent calibrated item.
Table 1. Equipment Required for Calibration Performance Checks and Adjustments
A - Authorized Calibration Equipment
Common name
Minimum use specifications
Calibration equipment
Frequency meter
AN/USM-207 or SD-1037M2
Range: 400 Hz 10%
ME-202/U or Dana 5700 series
Range: 30 Volts ac 0.5%
Voltmeter RF
For a null indication
ME-30/U or H-P 400 series
For lissajous pattern
AN/USM-281 or H-P 180 series
Signal generator
Range: to 1700 kHz
AN/URM-25 or equal
Power supply
Range: 27.5 Volts dc
CS36CR30 or equal
B-Authorized accessories
Banana plug to banana lead. (2 required) Banana plug to pin adapter, (2 required) and Banana plug to
alligator clip (quantity as required) Fabricated cable. (figure 1) Some modification of this cable is permissible
as to size, length, and loose ends.
Figure 1. Fabricated cable for the BEARING INDICATOR, construction details.
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