TB 9-4920-464-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Electric Torquemeter Flight Line Test Set, Model LTCT 29089-03. The
manufacturers' manuals were used as the prime data sources in compiling these
instructions. The equipment being calibrated will be referred to as the TI (test instrument)
throughout this bulletin.
a. Model Variations. None.
b. Time and Technique. The time required for this calibration is approximately 4
hour, using the dc and low frequency technique.
2. Forms, Records, and Reports
a. Forms, records, and reports required for calibration personnel at all levels are
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. When adjustments are in tables, the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
3. Calibration Description. TI parameters and performance specifications which
pertain to this calibration are listed in table 1.
Table 1. Calibration Description
Test instrument parameters
Performance specifications
FLTS AC voltmeter
5985 Hz to 6015 Hz
Range:
0.45 to 1.05 V ac
Accuracy:
(0.1% of fs + 10 dgts)
FLTS DC voltmeter
Range:
0.5 to 20 V dc
Accuracy:
(0.02% of rdg + 1 dgt)
0 to >10 MΩ
Diagnostic cable resistance
Range:
< 200 Ω
LTCT29351-01
Accuracy:
87.5 Ω 37.5 Ω1
LTCT30572-01
Accuracy:
< 0.100 Ω
Accuracy:
< 0.100 Ω
Accuracy:
LTCT29353-01
AC Range:
0-5 V ac , 0-50 mA ac
AIRCRAFT SYSTEM TEST
DC Range:
0-18 V dc
Accuracy:
6.0 %
AC
VPRI
AC
IPRI
Accuracy:
20 %
DC
VT
Accuracy:
0.12 %
DC
VC
Accuracy:
0.12 %
DC
VX.
Accuracy:
4.0 %
DC
V0x
Accuracy:
0.4 %
AC Range:
0-11.4 V ac
AIRCRAFT RDPS
DC Range:
0-10 V dc
Accuracy:
21.28 %
AC
VPRI
Accuracy:
20 %
AC
IPRI
Accuracy:
5 mV
DC
VT, VC
INTERNAL and EXTERNAL J- Range: 0-22 V ac
BOX SIGNATURE
Accuracy: 2 V ac
1Accuracy for LTCT30572-01 P1A pin B to P1B pin A.
