GAI-Tronics 12576-501(x) ADVANCE Rack-Mount Access Panel with LCD Display - Manual (Page 4)

Pub. 42004-728L2D
Model 12576-501(x) ADVANCE Rack-Mount Access Panel with LCD Display Page: 4 of 17
f:\standard ioms - current release\42004 instr. manuals\42004-728l2d.doc
08/12
Field Wiring
TX/RX Data
Terminal block 1 (TB1) on the rear panel connects the access panel data line to the ADVANCE system
control cabinet. A twisted pair cable (minimum Category 3) should be used for this connection. Observe
cable conductor polarity (+/−) when making connections at the control cabinet: (+ connects to + and −
connects to −). No damage will occur if the polarity is reversed, but the access panel will not function.
Maximum cable distance to the control cabinet is 3 km when using No. 24 AWG (Category 3) cable.
Refer to Figure 7 for terminal block location.
Power
The access panel is supplied with a modular power cord. Loosen the power connector lock on the rear of
the access panel. Plug the power cord into the connector and retighten the power connector lock. Plug
the other end into a grounded ac electrical outlet (120/230 V ac). Refer to Figure 7 for power cable
location.
N
OTE : The access panel does not have an on/off power switch and will power up immediately upon
plugging in the power cable. The ADVANCE System control cabinet must also be powered and running
before the access panel is operational. LEDs on the access panel will flash and the display will read “No
communication with ADVANCE” until data communication is established with the ADVANCE control
cabinet.
Audio In
Terminal block 2 (TB2) on the rear panel allows an external audio source to be connected to the panel.
Connect the audio source using a shielded twisted pair cable (No. 18–24 AWG).
The audio is summed with the handset microphone and can be broadcast to the system party line when the
hookswitch is activated. For broadcast to the system paging speakers, the hookswitch and page switch
must be activated. Refer to Figure 7 for terminal block location.
Remote Speaker
Terminal block 2 (TB2) on the rear panel allows an external speaker to be connected to the access panel.
Connect the speaker using a twisted pair cable (No. 18–22 AWG)
The speaker will broadcast the same audio as the front panel speaker but will not be affected by the front
panel volume control. Refer to Figure 7 for terminal block location.