49
Configuring Channel Cards
Figure 12: Dual Channel Card Configuration Switches
Using a Tone or DC Card for Local Control
There may be times when it is desirable to use a tone or DC channel card to control a local
control channel, for example when interfacing to a telephone channel or intercom. For
Tone/Local cards (P/N 950-9820), changing the control type of a channel is a software
Tone/Local Software Configuration
Line Termination
The transmit audio output and receive audio input may be configured for low impedance
or high impedance. For systems with only one control point on a channel, the channel
should be configured for low impedance (600
). For systems with multiple control points
on a channel, all but one parallel-connected channel should be configured for high
impedance (see
). One control point in a multiple control point system should be
configured for low impedance termination, and this should be the channel card at the far
end of the transmission line from the base station.
Low-impedance configurations present a 600
impedance on the transmit and receive
lines at all times. High-impedance configurations present a 3500
(or greater) impedance
on the transmit/2-wire receive line while idle, and 600
while transmitting. On the 4
-
wire
receive line, a high-impedance is 10,000
- at all times.
Motorola/GE Current Conversion Switch (DC Control Only)
Option
Selection Device
BTI
OPT
OPT
FD
BTI
OPT
OPT
FD
1
2
3
4
5
6
7
8
ON OFF
CONFIG
Содержание 4000 Series
Страница 1: ...Series 4000 Communication Control System Installation and Configuration 025 9533Y...
Страница 6: ...6 025 9533Y...
Страница 28: ...Introduction 28 025 9533Y...
Страница 88: ...Common Control Equipment Installation 88 025 9533Y Figure 22 Console Duplex Wall Jacks...
Страница 110: ...Common Control Equipment Installation 110 025 9533Y...
Страница 172: ...Console Installation 172 025 9533Y...
Страница 192: ...Audio Level Adjustments 192 025 9533Y...
Страница 230: ...Accessory Installation 230 025 9533Y...
Страница 236: ...Console ANI Programming 236 025 9533Y...
Страница 339: ...339 RSMP Operation Figure 99 Main Screen...
Страница 350: ...Radio System Management Program 350 025 9533Y...
Страница 362: ...Appendix B Troubleshooting 362 025 9533Y...
Страница 417: ...417 Index wiring accessories 164 wall jack 86 wiring diagram for M4219 244 X XMT button labels 332 XP settings 247...
Страница 418: ...Index 418 025 9533Y...