User's Manual Part 1

CAS / Part No. 9000000

SYSTEM DESCRIPTION AND INSTALLATION MANUAL

34-43-20

15 Feb 2003

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1--23

Table 1--6. TT--950/951/952 T

CAS Computer Unit Leading Particulars

Item Specification

Dimensions (maximum):

• Height ....................................... 7.64 in. (194.0 mm)

• Width (TT--950/TT--952) ........................ 7.52 in. (191.0 mm)

• Width (TT--951) ............................... 4.90 in. (124.5 mm)

• Length ....................................... 15.26 in. (387.6 mm)

Weight (maximum):

• TT--950 ...................................... 17.60 lb (8.0 kg)

• TT--951 ...................................... 15.40 lb (7.0 kg)

• TT--952 ...................................... 18.60 lb (8.45 kg)

Operating Voltage:

• dcVoltage.................................... +20.5 V dc minimum, +27.5 V dc

nominal, +32.2 V dc maximum

• ac V oltage (TT--950/TT--952 only) ............... 97 V rms minimum, 115 V rms nominal,

134 V rms maximum at 400 ¦ 80 Hz

Power Consumption (TT--950/TT--951) ............. 70 Watts standby, 100 Watts operational

Power Consumption (TT--952) .................... 83 Watts standby, 113 Watts operational

Circuit Breaker Ratings:

• 115VacCircuitBreaker ....................... 5 Amp Typical

• 28VdcCircuitBreaker ........................ 10 Amp T ypical

Mating Connector:

• P1 (Rear Connector) ........................... Radiall Part No. 620--800--066

• J1 (Front Connector) .......................... ACSS Part No. 4004295--160,

ITT Part No. KJ6F18A53P

Cooling Requirements:

• 6 MCU Units (TT--950/952):

-- Cooling Requirements ....................... ARINC 600 (blow through) or ARINC

404 (draw through)

-- MinimumCoolingAirflowRate ................ 54.7 pounds/hour (24.86 Kg/hour)

-- PressureDrop(atminairflowrate) ............ 0.2 ± 0.12 inches (5 ± 3 millimeters) of

water

• 4 MCU Units (TT--951):

-- Cooling Requirements ....................... NONE -- Unit has an internal fan for

cooling. No forced air cooling is required

or accepted.

-- FanOn(controlledbytemperaturesensor) ..... Temp sensor > +45 Deg C