ILD1000A Local Desk Set
Installation
11
02/12
Connections
Cable length limitations are imposed by power losses in the cable and stray noise pickup on the
microphone line. Cable length should be less than 1000 feet to maintain satisfactory performance.
To make the required line connections, a cable with tinned bare leads stripped to about 1/4 inch (6 mm)
is necessary. All interface connections are made inside the unit. To open the housing, remove the four
screws in the corners on the back housing and lift off the top cover.
Desk sets powered by a wall transformer or base station power supply can be connected in parallel on a
single cable. Refer to the radio manual and schematics to locate connection points. If they can not be
located, contact the manufacturer's technical support group. Multiple cable tie points are not provided.
Power Connection
Make the power connection to a 12 V dc source capable of supplying up to 0.5 A per desk set. This may
be obtained from a direct connection to the radio power supply.
N
OTE
:
Do not obtain power for the desk set from the radio accessory connector. Damage to the radio
may result.
As an option, power can be supplied to the ILD1000A Desk Set from a listed Class 2 120 V ac wall
adapter. (The desk set is rated as Class III SELV powered equipment). The ac adapter is necessary if:
more than one unit is connected to a single base station, or
if the desk set is used more than 300 feet from the base station.
The desk set can operate on dc input voltages from 10.5 to 16 volts. Connect the power supply as
follows:
Positive (white striped) lead to Terminal Strip 1, terminal 1
Negative (black) lead to Terminal Strip 1, terminal 8
Radio Connection
All power and radio interface connections are made to the eight-position terminal strip on the main
circuit board. The desk set must be opened for access to this terminal strip.
1.
Route the cable through the slot on the bottom rear corner of the desk set housing.
2.
Loosen the eight slotted screws on the terminal strip and insert the cable wires into position
according to the terminal strip table below.
3.
After connections to the radio cable and dc supply have been made, verify the positions to ensure
they are correct.
4.
Apply power. Press the PTT pressbar on the handset to test the transmit function and the
MONITOR
button to test the receive function.
Summary of Contents for ILD1000A
Page 23: ...19 02 12 Main Circuit Board...
Page 24: ...Main Circuit Board ILD1000A Local Desk Set 20...
Page 25: ...21 02 12 Schematics...
Page 27: ...ILD1000A Local Desk Set Schematics 23 Local Desk Set RX Audio Schematic Diagram Sheet 2 of 4...
Page 28: ...Schematics ILD1000A Local Desk Set 24 Local Desk Set TX Audio Schematic Diagram Sheet 3 of 4...
