Table 1. Calibration Description
Test instrument parameters
Performance specifications
Input*
26 volts ac, 400 Hz.
Output signals
Three 11.2 volts, 400 Hz simulated signals.
Dial:
Range
0' to 360
0.1.
Accuracy
*These specifications are for information only and are not necessarily verified in this procedure.
Section II. EQUIPMENT REQUIREMENTS
4. Equipment Required. Table 2 identifies the specific equipment used in this calibration procedure. This equipment is
issued with electronic avionics maintenance shop sets and is to be used in performing this calibration. When any of the
equipment listed in table 2 is not available, an equivalent calibrated item may be used. The item 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 specifications listed in table 2.
5. Accessories required.Table 3 lists the accessories required in performing this calibration. These accessories are
issued as indicated in paragraph 4 above. When necessary, these items may be substituted by equivalent items unless
specifically prohibited.
Table 2. Calibration Equipment
Common name
Minimum use specifications
Equipment
Voltmeter, Electronic
Range: 3 millivolts to
ME-30/U
40 volts ac
Accuracy: 3% (min null
and max voltage)
Indicator Test Set
Range: 26 volts, 400 Hz
AN/ASM-110 (TS-1627/ASM-
110)
Accuracy: 2%
Table 3. Accessories Required
Common name
Description
Lead electrical*
24 inch, red, single banana plug terminations
Lead electrical*
24 inch, black, single banana plug terminations.
Jumper wire
As required in paragraph 7b(3)
*Two required.
Section III. CALIBRATION PROCESS
HIGH VOLTAGE is used during the performance of this calibration. DEATH
ON CONTACT may result if personnel fail to observe safety precautions.
6. Preliminary Procedurea. Connect the GND-C and 26V 400-H connectors on the Test Instrument to the 26V 400
,
CPS black and red jacks of Indicator Test Set AN/ASM-110 (TS-1627/ASM 110) with the electrical leads identified in
b. Connect the Xjack on the Test Instrument to Voltmeter, ME-30/U INPUT jack and the Test Instrument Y jack to the
voltmeter GND.
c. Allow approximately 15 minutes for warmup and stabilization of the equipment.
NOTE
Verify the results of the following test and take corrective action if necessary. Additional maintenance information is
contained in TM 11-6625-481-12 and 45.
2
