TB2-1 (+) and TB2-2 (-) Telephone Riser 1 TB2-4 (+) and
TB2-5 (-) Telephone Riser 2
Used for the fire fighter phone communications system. A maximum of 5
fire fighters telephones per riser may be off hook at any one time.
Connect telephone riser 1 or 2 to the "B" riser input terminals on the
CM1/2(N) motherboard or RZB12-6. Riser supervision is accomplished
using a URSM (P/N 130102) at the last remote panel that contains a
telephone circuit. Unused telephone risers must be terminated with a
10K
Ω
, 1/2 W EOL resistor.
Telephone branch circuit switching is controlled and annunciated via
RASP, SAN or FCCS switch and annunciation panels.
TB2-3 Telephone Riser Shields(grounded)
Terminate telephone riser shields to earth ground.
TB2-6 (+) and TB2-7 (-) Telephone Busy Riser
Provides "BUSY" signal for use with fire fighter's telephone system.
Requires a dual channel card such as the ZB8-2, ZB8-5, ZB8-8 or
RZB12-6. Connect to "A" riser input terminals on CM1(N)
motherboard or RZB12-6 when using "busy" riser.
TB3-1 Earth Ground
TB3-2 (+) and TB3-3 (-) 24 VDC
*
TB3-4 (+) and TB3-5 (-) Data, RS-485
TB3-6 Data Shield
Terminate RS-485 data line shields here. This is not earth grounded.
* To use 20 mA loop or fiber optic communications formats, remove
IC U2, and install the ribbon cable header from the appropriate
interface card. When using 20 mA. loop communications, refer to the
SO-20 technical data sheet for additional information. When using a
fiber optic communications link, refer to the SO-FIB technical data
sheet for additional information.
Connectors
P1 Ribbon Cable to switch/display board.
Indicators
Phone Switch LED - Phone page selected on channel 1/2.
MIC Switch LED - Microphone selected to page on channel 1/2.
Tone Switch LED - Pre-programmed tone manually/automatically
selected for broadcast on channel 1/2.
Tape Switch LED - Recorded message manually/automatically selected
to broadcast on channel 1/2.
VU Meter - Reflects Microphone activity.
FCCA Series Manual
9
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