TB 11-6625-2932-35
(Calibration
Data Card) must be annotated in
appear. Report only those adjustments made and
accordance
with TM 38750 for each calibration
designated with (R).
performed.
3.
Calibration Description. TI parameters and
b. Adjustments to be reported on DA Form 2416 are
performance specifications which pertain to this
designated (R) at the end of the sentence in which they
calibration are listed in table 1.
TABLE 1. Calibration Description
Test Instrument Parameters
Performance Specifications
Scale
in % (percent).
Measuring range
20%
Error with bias
100% approx. 20 ms.
Distortion measurement
equal to or less than 0.25%
Error with transfer
100% + 20 ms.
Time measurement
equal to or less than 1%
Relay excitation
25 Hz sinusoidal current (30 Hz in special version
for 60 Hz power frequency).
Energizing voltage ( no load)
44 V.
Relay energizing current
equal to or less than 20 mA.
Power voltage
110/125/150/220/240V + 10%.
Power frequency
50 Hz + 1%. (special version: 60 Hz + 1%.
approx. 20 VA.
Power drain
Section II. EQUIPMENT REQUIREMENTS
specifications listed in table 2. The accuracies listed in
equipment used in this calibration procedure. Alternate
standard and the TI.
items may be used by the calibrating activity when this
equipment listed in table 2 is not available. The items
5. Accessories Required. The accessories listed in
selected must be verified to perform satisfactorily prior to
use and must bear evidence of current calibration. The
equipment must meet or exceed the minimum use
When necessary, these items may be substituted by
equivalent items, unless specifically prohibited.
TABLE 2. Equipment Required
Item
Minimum use
Calibration equipment
number
Common name
specifications
Type/Model nr. and/or Mfg
A1
Audio Oscillator
Frequency: 210 to 225 Hz.
HP 205 AG (Not available in the
Output: 20 to 30 Volts
mobile calibration facility)
A2
Digital Oscillator
Range: 0 to 1000 Volts ac
HP 3490A
Accuracy: +2%
A3
Oscilloscope
Dual trace capability
HP 180D or Tek RM561A
A4
Variable Transformer
Range: 0 to 220 Volts*
(not available in the mobile cal-
ibration facility) Use a 220 volt
monitored source
*Recommend the use of a 220 volt transformer during depot repair, overhaul or rebuild.
TABLE 3. Accessories Required
Item
number
Common name
Description
B1
Clip, adapter
Banana jack to alligator clip (red)
B2
Clip, adapter
Banana jack to alligator clip (black)
B3
Lead, electrical (2 required)
Banana plug terminations (nominal length)
B4
Oscilloscope probes (2 required)
Part of oscilloscope A3
2
