TB 9-4920-468-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
APN 13666129 Spiral 2 and APN 13675052 Spiral 3. IETM 9-6625-3637-23&P was used as
the prime data source in compiling these instructions. The equipment being calibrated will
be referred to as the TI (test instrument) throughout this bulletin.
a. Model Variations. Variations between SWICE APN 13666129 Spiral 2 (SP 2) and
APN 13675052 Spiral 3 (SP 3) are described in the text. Both versions have the same
performance specifications.
b. Time and Technique. The time required for this calibration is approximately 1
hour, using the dc and low frequency technique.
2. Forms, Records, and Reports. Forms, records, and reports required for calibration
personnel at all levels are prescribed by TB 750-25.
3. Calibration Description. TI parameters and performance applications that pertain
Test instrument parameters
Performance specifications
Wireless Diagnostic Sensor-Analog (WDS-A)
Range: 12 to 3200 Hz
Accuracy: (1% of reading +3 Hz)
Vehicle Specific, DC Voltage (L_W)
Alt/Gen Out (N_W)
Alt/Gen Field (O_M)
Range: 0 to 32 V dc
Accuracy: 0.32 V dc
Starter Volts (T_W)
Battery + (V_W)
Range: 0 to 22 V ac (10 to 1000 Hz)
Vehicle Specific, AC Voltage (L_W)
Accuracy: 1.1 V ac
Engine ground (M_W)
Range: 0 to 2 V dc
Alt/Gen Ground (P_W)
Accuracy: 0.04 V dc
Range: 0 to 90 mV dc
Battery Shunt HI+ (X_Y)
Accuracy: Greater of (1.5% of reading + 0.45 mV dc) or 1 mV
Fuel Supply Pressure (u_v)
Range: 50 to 499 RPM (1 to 8 Hz)
Accuracy: 0.04 Hz
Pulse Tach (c_d)
Range: 500 to 5000 RPM (8 to 83 Hz)
Accuracy: 0.415 Hz
Range: 40 to 100 mV dc
Engine Oil Temp (k_m)
Accuracy: (1.5% of reading + 0.5 mV dc)
Coolant Temp, DC Volts (n_p)
Range: 0 to 3 V ac
Coolant Temp, AC Volts (n_p)
Accuracy: 0.15 V ac