GAI-Tronics 265-001 Intrinsically-Safe Telephone Rack-Mount System User Manual
Page 12
Pub. 42004-200B
Intrinsically Safe Rack-Mount Telephone System
Page: 12 of 13
\\s_eng\gtcproddocs\standard ioms - current release\42004 instr. manuals\42004-200b.doc
02/06
Electrical /Acoustical
Rack-mounted IBU consisting of ......................................................... One Model 267 Subrack Assembly
One Model 266 Power Supply
Up to seven Model 265 Line Cards
Telephone Network Interface
2-wire ...........................................................................................
BELL PUB 61100 Compatible
4-wire ............................................................................... See the 4-Wire Option Interface below
AC power input
Voltage (selectable) ....................................................................................... 90-130V/180-240V
Frequency ...................................................................................................................... 47-63 Hz
Current ....................................................................................................... 0.5 amps (maximum)
Ringer pitch adjust ................................................................................................. 1 kHz-8 kHz (nominal
Intrinsically-Safe Interface
Voltage
(maximum) .............................................................................................................. 18 V
Resistance (minimum) .................................................................................................... 66 ohms
Current Limited (maximum) ............................................................................................ 136 mA
IBU Indicators
I.S. Loop Current.......................................................................................................... I.S. LOOP (GRN)
I.S. Lock Detect............................................................................................................ I.S. LOCK (GRN)
Telephone Line Loop Current............................................................................................. TELCO (YEL)
Hook ................................................................................................................................... HOOK (YEL)
Model 265 4-Wire Option Interface
Receive (TB2-1, 2) .............................................................................................................. DRY (No dc)
Signal Level ................................................................................................................... 0 dBm (nominal)
+3 dBm (maximum)
Transmit (TB2-3, 4) ..........................................................................................................................WET
DC loop current ................................................................................................... 20 mA - 70 mA
Signal level ........................................................................................................ 0 dBm (nominal)
Ring voltage input.............................................................................................. 40 V - 150 Vrms