TM 55-4920-328-13 Table  1-3.  Leading Particulars of Test Trailer Assembly - Continued. Figure and Index No. 284, Figure Engine Safety Unit 3A4 7-17 Height 8.72 in. Width 19.00 in. Depth 17.00 in. Input Voltage 22 to 34v dc Internal Power Supply Regulated 10v dc Relay Contact Capacity 5 amp Line Protection 1-amp fuses Temperature Channels Transducer C/A thermocouple network Input Impedance 10k ohm Range 0° F to 1,500 °F Analog Voltage Output 0 to 5v dc No.  1 Limit Setpoint 1,200F No.  2 Limit Setpoint 1,400°F Pulse 1v (min) to 200 v (max) (peak-to-peak) Input Impedance 10k ohm Range O to 100 Hz Analog Output 0 to 5v dc 2,3,6,7,8, Water Brake Performance Analyzer Figure 1-25 Temperature Meters M1, M2, M5, M6 and M7 Height 6.69 in. Width 1.52 in. Weight 38 oz Internal Resistance 4 ohms (max) Input Current 0 to 5 ma dc Temperature Range 0°F to 300  F 4,5, Figure Water Brake Performance Analyzer 1-25 Pressure Meters M3 and M4 Height 6.69 in. Width 1.52 in. Weight 38 oz Input Voltage 0 to 5v dc Internal Resistance 1,000 ohms/volt Pressure Indication -30 in. hg to 250 psig 10, Figure Time Indicator 1-25 Height 1.25 in. Width 1.25 in. Depth 2.88 in. Weight 4.75 lb Number of Counters 5 Calibration 0 to 9,999 hr 1-82