Specifications

Cable requirements

For optimum clarity of speech it is strongly recommended that this system

is installed using twisted-pair telephone cable (eg type CW1308). Use one

of the pairs for the R & O connection between the speech unit and the

telephone.

Installation Procedure

Connect all items by following wiring diagram 4. It is strongly

recommended that a single telephone be connected at a time and fully

tested before proceeding to the next.

Speech adjustment

The model 51 speech unit has two pots at the rear for adjustment of

speech levels as follows:

Volume A: Speech level at the Entrance Panel

Volume B: Speech level at the Telephone

If feedback is experienced (a howl or whistle) turn both controls to 'off' and

then slowly adjust each up in turn until a satisfactory level of speech is

attained.

Troubleshooting

No speech/ Insufficient speech: Initially establish correct operation of the

Speech Unit by disconnecting all telephones and connecting a known

working telephone with a short length of cable (R O T only); Reconnect the

telephones one at a time until the fault re-appears. Note: speech will be

impaired if one or more telephones are left off the hook.

CS109 Complete Systems

The CS109-N systems include all of the components necessary for a

single-door Coded Access and Door Entry Telephone System:-

1 x Model 108Plus Coded Access Controller in a lockable steel cabinet.

1 x CP109-N Anodised AluminiumEntrance Panel with integral keypad

and surface mounting back-box and including a model 51 speech

unit.

N x Model 500D Door Entry Telephones

1 x Model 340 Power Supply Unit.

1 x Model 203 Lock Release.