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CRT Function
Keys
One maximum - if using the CRT-2, the keyboard
may be located remotely with any CRT-2 in the
chain. If using the CRT-1, the CRT with keyboard
112
Hardware Installation—Installing the IFC-1010/2020
The function keys on the CRT are labeled with special IFC-1010/2020
commands. These keys function identical to the keys on the DIA. For a
description of these commands, refer to the IFC-1010/2020 Operations
Technical Bulletin (LIT-448100) in this manual.
CRT with Keyboard
must be first in the chain and must be in the
same room as the IFC-1010/2020.
To AUX Port of CRT
nc
7
3
2
1
To EIA Port of next
CRT or PRN
Figure 81: CRT to SIB Connections
Notes: Outputs are power limited (for device/circuit rating, refer to
Circuit/Device Ratings and Connections Technical Bulletin
(LIT-448160).
Connections must be made with overall foil/braided-shield twisted
pair cable.
Apply power to the CRTs prior to startup of the system, beginning
with the last CRT in the chain.
A total of 25 CRTs may be installed. Only one keyboard (shipped
with each CRT) may be used in the entire system and it may be
installed with any CRT in a chain. For all applications except
NFPA 72 Proprietary Protected Premises Receiving Units, the
keyboard is used only to program the control panel and must be
removed or kept in a locked enclosure after programming the
N6
system.
50 feet (Typical)
Wiring distance limited by cable
capacitance. See EIA-232E standard.
7
3
2
1
To EIA Port of CRT
CRT without Keyboard
Up to 24 maximum in chain.
50 feet maximum (typical) between CRTs.
SIB-2048
or SIB-NET
SIB (Connector P3)
9
EIA-232 Reference
Twisted Pair
10
Transmit to CRT
11
EIA-232 Reference
Twisted Pair
12
Receive from CRT
nc
7
3
2
1
crtsibcx
P1
P4
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