Appendix B - Installing Using Existing Cabling To Connect - Quail Digital Pro9 Installation Manual

Appendix B
Installing Pro9 system using existing cabling to connect the base station to the DTM located in
the building - Q-P9JB
In the Pro9 accessory kit select Junction Box. Inside is a small PCB with two sets of screw terminals
as shown. Connect your 3 wires on A for the speaker and for the microphone as shown in the table
below. Then wire the 6 wires from your audio cable to the pins on B as shown in the table.
1. First, cut the cables on both the speaker and the microphone. Both have fixed cables, factory
terminated with specialist connectors. Approximately 30cm along the length cut both cables.
2. Strip the cable of all 4 ends and prepare the cores for connection.
3. In the order point connect the microphone and speaker into the connection strip of the junction
box as shown following the colour codes.
4. Connect your existing audio cable to section B of the PCB as shown.
5. Then go to the other end of the audio cable in the building and use the other junction box to
attach the speaker and microphone plugs to it.
Figure 16 - Connecting using existing cabling to DTM in building
Installed cable type
Quail speaker & mic
Installed cable type
4 core overall screened
22A WG with drain
Specialist DT cable 3 pair
individually screened
Multi pair screened cable
22A WG (use two pairs)
Terminal connection Connector A
Spkr +ve Spkr -ve Spkr scrn
red black screen
Terminal connection Connector B
Spkr +ve Spkr -ve Spkr scrn
red black
red black
black
red (pr1) scm (pr2)
(pr1)
Mic +ve Mic -ve
white blue
Mic +ve Mic -ve
nc white green
nc white blue
white black
(pr2) (pr2)
Mic scrn Notes
Supplied installation
screen
options
Mic scrn Notes
scm As used in many DT
(drain) installations
Specialised cable
scm
designed for DT
General purpose cable
scm (pr2)
suitable for DT
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