Specifications

Set RX ack to close down call
Set RX ack to interrogate
Set RX ack to locate
Set TX call code
Set TX code for interrogate
Set TX code for locate call
Set TX code for close down
Set TX code for ack to RX call
Set TX ack to night service
Ack timeout Set how long system waits for ack
L.E.T. Set link establishment time delay
Call Stack Option Set how the call stack functions
Leading Rept tone Set if leading repeat tone is on or off
Circulating Calls Special Function used with Philips Voting Systems
Alert Tone Default Set if enabled at power up
Alert Tone Type Intermittent or continuous tome
Call Printer Turn logging printer on/off
RX Vox time Set how long input vox hangs
Motorola Func. Set the Motorola keying options
Talk through mode Set local (via DRC-1) or remote via Base Station
Night Service Lock Sets lock out time
Teleconnect Lock Sets lock out time
Group Connect Timer Set how long group connects are established.
Line Proving Sets line proving (TT holdoff) on/off
Background mute Used when controlling switch in DRC32 mode
FAC Key Set function of FAC key
Trim Line O/P Trim line output level
Trim LineI/P Trim line input level
Open Collector OP Set how pin 5 Aux connector is triggered
Password Set Pin code and turn protection on
Engineering Adjustments.
Ex factory the DRC-1 will be set to system peak levels of –10dBm to line, and if selected, the
tone keying will be –18dB down on system peak or –28dBm.
The trim adjustments found in the installation menu permit adjustment of these levels over the
range of -2 to -22 dBm.
Setting the correct line levels can be achieved in one of two ways depending upon the type of
test equipment to hand. Method 1 requires an ordinary AC milivoltmeter calibrated in dBm
and terminated in 600Ω. Method two requires a selective tone measuring set with a bandwidth
of 100hz. Both require an audio oscillator.
Method 1.
In the installation menu set keying to DC.
In the installation menu set talk through to Local.
Connect an audio oscillator to the line input pins of the line port.
Connect the AC milivoltmeter to the Aux port audio output pins 2 & 7.
Set the audio oscillator to 1Khz –20dBm.