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Guardian Telecom Inc.
Installation and Operation
Model CIT-40
Page 8
Engineering Specifications
ELECTRICAL PERFORMANCE
AUDIBLE RANGE FREQUENCY RESPONSE 300 – 3400 HZ
DIALING METHOD DTMF OR 40/60 PULSE AT 10 PPS
TRANSMIT OBJECTIVE LOUDNESS RATING (TOLR) -40 +/- 3 dB
RECEIVE OBJECTIVE LOUDNESS RATING (ROLR) TYPICAL 47 +/- 3 dB
SIDE TONE OBJECTIVE LOUDNESS RATING (SOLR) TYPICAL 10 +/- 4 dB
SET IMPEDANCE 600 OHMS NOMINAL
MAXIMUM LOOP 15,000 FT (4,600 M) OF 22 AWG COPPER
ELECTRICAL REQUIREMENTS
LINE VOLTAGE 24 – 56 VDC
LOOP CURRENT 20 - 120 MA
CONNECTION METHOD TERMINAL STRIP OR RJ11 CONNECTOR
FUSE ¼ AMP 250 VOLT 3AG FAST BLOW
ENVIRONMENTAL
TEMPERATURE -40
O
TO +60
O
C (-40
O
TO +140
O
F)
HUMIDITY 0 TO 95% RH
DUSTPROOF FULL ENCLOSURE GASKET
MECHANICAL
HOOK SWITCH (CRADLE SWITCH) LIFE >1 000 000 OPERATIONS
BODY AND FACEPLATE CONSTRUCTION 16 AWG STEEL, ZINC DICHROMATE PLATED AND
POWDER COATED
DIMENSIONS 9 X 5 X 5.2 INCHES (229 X 127 X 132 MM)
NET WEIGHT 5.5 LBS (2.5 KG)
HANDSET MATERIAL HIGH IMPACT ABS
MICROPHONE NOISE REDUCING ELECTRET
OPTIONAL MICROPHONE NOISE CANCELING DYNAMIC
RECEIVER HEARING AID COMPATIBLE
STANDARD MOUNTING VERTICAL WALL
WIRING ACCESS REAR OPENING 1.5 X 1.5 INCHES ( 38 X 38 MM)
HARDWARE MATERIAL STAINLESS STEEL