Pub. 42004-178D
Model 263 Isolation Barrier Unit (IBU)
Page: 13 of 13
\\s_eng\gtcproddocs\standard ioms - current release\42004 instr. manuals\42004-178d.doc
03/06
Model 262-001 Indoor /Model 272-001 Outdoor I.S. Telephones
Electrical /Acoustical
Electrical specifications (nominal) ........................................................................................ 12 V, 12 mA
Ringer performance (typical) ........................................................................................... 98 dB @ 10 feet
Frequency (adjustable at the IBU) ........................................................... 1 kHz to 8 kHz (typical)
Ring signal loss (18 AWG) .......................................................................................... -4 dB/mile
Signaling....................................................................................................................................... DTMF
Transmission path (2-conductor) ............................................................................................. Full duplex
Microphone....................................................................................................... Dynamic noise-canceling
Earpiece ............................................................................................................... Hearing aid compatible
Output (0 dBm @ IBU TELCO Line) ......................................................... 105 dB SPL @ 1 kHz
Audio signal loss (18 AWG) ..................................................................................... -1.3 dB/mile
N
OTE
:
Must be connected in accordance with Pub. 42004-380, Control Drawing 73242.
Mechanical
Housing construction........................................................................................ Glass-reinforced Polyester
Housing dimensions
Model 262-001 ...... ..................... 8.02 W
×
9.52 H
×
6.86 D inches; (203.7
×
241.8
×
174.2 mm)
including handset; 3.86 D (98 mm), without handset
Model 272-001 .......................... 9.39 W
×
13.16 H
×
7.46 D inches; (238.5
×
334.3
×
189.5 mm)
Enclosure rating (UL)
Model 262-001 ............................................................................................................... Type 12
Model 272-001 ............................................................................................. Type 3R (rainproof)
Weight
Model 262-001 .................................................................................................. 5.0 lbs. (2.27 kg)
Model 272-001 ................................................................................................ 10.0 lbs. (4.53 kg)
Approvals
When connected in accordance with Pub. 42004-380, Control Drawing 73242:
UL/cUL......................................................................................... Class I, Div. 1, Groups A, B, C, and D;
Class II, Div. 1, Groups E, F, and G; Class III;