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Guardian Telecom Inc.
Installation and Operation
Model HR70
Page 9
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) -41 +/- 3 dB
RECEIVER VOLUME ADJUSTMENT +8.1 / -5.4 dB IN 5 STEPS OF 2.7 dB
RECEIVE OBJECTIVE LOUDNESS RATING (ROLR)
-AT NOMINAL VOLUME LEVEL 50 +/- 3 dB
-AT MAXIMUM VOLUME LEVEL 42 +/- 3 dB
-AT MINIMUM VOLUME LEVEL 55.5 +/- 3 dB
SIDE TONE OBJECTIVE LOUDNESS RATING (SOLR)
-AT NOMINAL VOLUME LEVEL 11 +/- 4 dB
-AT MAXIMUM VOLUME LEVEL 7 +/- 4 dB
-AT MINIMUM VOLUME LEVEL 14 +/- 4 dB
MEMORY DIAL 10 REGISTERS OF 20 DIGITS EACH
FLASH 600 MSEC TIMED DISCONNECT
MUTE PRESS KEY TO MUTE TRANSMITTER
REDIAL 31 DIGITS MAXIMUM
RINGER OUTPUT MAX 75 dB
FCC RINGER EQUIVALENCE 0.9B
SET IMPEDANCE 600 OHMS NOMINAL
MAXIMUM LOOP 15,000 FT (4,600 M) OF 22 AWG COPPER
Electrica
l
RINGER SENSITIVITY 40 – 100 V, 16 – 25 HZ
LINE VOLTAGE 24 – 56 VDC
LOOP CURRENT 20 - 120 MA
CONNECTION METHOD TERMINAL BLOCK
FUSE ¼ AMP 250V 3AG FAST BLOW
Environmenta
l
WEATHERPROOF ENCLOSURE NEMA 3R
TEMPERATURE -40
O
TO +60
O
C (-40
O
TO +140
O
F)
HUMIDITY 0 TO 95% RH
DUSTPROOF FULLY GASKETTED ENCLOSURE AND MEMBRANE KEYPAD