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. 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.
24
FCCA Series Manual
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