TB 11-6625-2488-50/1
c. Equipment and Accessory Identification. The
4.
General Instructions.
a.
DA Form 2416
(Calibration Data Card). During the use of
this bulletin,
equipment and accessories referred to throughout this
annotate DA Form 2416 in accordance with TM 38-750.
d. Equipment Setup. Disconnect instructions are
b. Unit Under Test. Fifty watt amplifier, Krohn-Hite
not contained in this bulletin.
Model DCA-50, will be referred to as the UUT (unit under
test) throughout this bulletin.
Section II. CALIBRATION
5. Equipment and Accessories Required. Table 1
provided to assist in the selection of required equipment
and accessories. For specific item identification refer to
lists minimum use specifications of equipment required
Table 1. Minimum Specifications of Equipment Required
Item
Common name
Minimum use specifications
number
0 to 5% at 1 Hz to 1 500 kHz
A1
DISTORTION
RANGE:
3%
ANALYZER
ACCURACY:
A2
SQUARE-WAVE
RANGE:
2 to 1000 Hz
1%
ACCURACY:
A3
1 Hz to 500 kHz at 10 volts, minimum 2
RANGE:
2%
ACCURACY:
1 Hz to 800 kHz 3
A4
TEST
RANGE:
2
ACCURACY:
A5
RANGE:
Dc to 500 kHz
3%
ACCURACY:
A6
RANGE:
-10 to + 10 volts dc
1%
ACCURACY:
A7
DECADE
RANGE:
400 to 500 ohms
2%
RESISTOR
ACCURACY:
0 to 103 volts ac at 1 Hz to 800 kHz 4
A8
THERMAL
RANGE:
5
TRANSFER
ACCURACY:
A9
AUTOTRANS-
RANGE:
105 to 125 volts ac
1%
FORMER
ACCURACY:
A10
DC VOLTAGE
RANGE:
0 to 103 volts dc
5
STANDARD
ACCURACY:
1
Procedure limitation: 5 Hz to 500 kHz.
2
Procedure limitation: 5 Hz to 100 kHz.
3
Procedure limitation: 10 Hz to 800 kHz.
4
Procedure limitation: 5 Hz to 800 kHz.
5
Combined accuracy of A8 and A10 is 1% output regulation check and 0.38% for voltage gain and frequency response check.
6
Two required
4