2
REPEATER OPERATION
Note:
Please consult your dealer for programming the repeater. Due
to the frequency stability on the 6.25 kHz bandwidth channel, when
operating the repeater using an optional OCXO unit, allow the unit to
warm up for 24 hours after turning the power on.
After turning on the power, wait for approximately 10 seconds for
the VCXO or 5 minutes for the OCXO (when mounting) to warm up.
During this time, the CH/STATUS Display will blink. The keys will
function when they are pressed.
When power is applied to the unit, the POWER indicator lights
green. Turn the VOLUME control clockwise until a click sounds, to
unmute the audio. Rotate to adjust the audio. Turn the VOLUME
control counterclockwise fully to mute the audio.
The BUSY indicator lights green while receiving a signal and the
TX indicator lights red while transmitting.
■
Rear Panel
a
RX IN jack
Connect an RX antenna or a duplexer to this BNC
receptacle.
b
TEST/SPKR jack
Test input/output jack. Connect an external speaker to
this jack.
c
CONTROL I/O jack
Connect a repeater controller or a remote panel to this
DB-25 interface.
d
SYNC 1 / 2 jack
Connect to another repeater to use synchronous frame
signaling for digital trunking.
e
LAN jack
Connect to Ethernet.
CONTROLS AND FUNCTIONS
■
Front Panel
f
REF OUT jack
Connect to another repeater within the site to supply a
reference signal.
g
REF IN jack
Connect from another repeater within the site to receive a
reference signal.
h
FUSE
Insert 7.5 A blade fuse into this fuse holder.
i
DC 13.8V jack
Connect a 13.8 V DC power supply to this jack.
j
TX OUT jack
Connect a TX antenna or a duplexer to this BNC
receptacle.
a
b
d
e
f
g
c
TEST/SPKR
RX
TX
CONTROL I/O
SYNC
1
2
LAN
REF OUT
REF IN
FUSE
75
DC 13.8V
h
i
j
TRANSCEIVER OPERATION
■
Receive
Adjust the volume to your desired level. You may need to
readjust the volume if you are having interference while
receiving a message from your dispatcher or another member
in your fl eet.
The
BUSY indicator lights green while a signal is being
received.
■
Transmit
1 Listen to the channel before transmitting, to make sure it
is not being used.
2 Press the microphone PTT switch, then speak in your
normal speaking voice.
The TX indicator lights red while transmitting.
3 When you fi nish speaking, release the PTT switch.
a
b
d
e
f
g
h
i
c
MICROPHONE
VOLUME
COM
OFF/
POWER
CTRL
OCXO
BUSY
TX
1 2
MON TAKE
OVER
RPT
DISABLE
A
B
C
3 4 5 6 7 8
STATUS
j
k
l
a
Speaker
b
CH/STATUS Display
Two 17-segment digits display the channel number, name,
or status.
c
STATUS indicator
Indicates the status of the repeater. (NXDN mode)
d
Programmable Function keys
Press these keys to activate their programmable functions.
e
COM jack
Connect to the PC using a RS-232C standard DB9
(Female) cross cable.
f
VOLUME control
Turn clockwise until a click sounds, to unmute the audio.
Rotate to adjust the audio. Turn counterclockwise fully to
mute the audio.
g
MICROPHONE jack
Connect a microphone to this 8-pin modular jack.
h
POWER indicator
Lights green when power is supplied to the DC 13.8V jack.
Blinks red when an abnormal voltage is present. While
blinking, the repeater cannot be used.
i
TX indicator
Lights red while transmitting.
j
BUSY indicator
Lights green while a signal is being received.
k
OCXO indicator
The OCXO indicator shows the state of the reference 10
MHz oscillator :
Lights Green when using a reference signal from an
optional OCXO unit (KXK-3).
Lights Orange when using a reference signal from another
repeater.
Lights red when no reference signal is available or when
an error occurs.
Does not light when the reference signal is an internal
VCXO signal.
l
CTRL indicator
The CTRL indicator shows the control channel status
while using Digital trunking :
Lights Green when the repeater is used as control
channel.
Blinks Green when using a non-dedicated control channel.
Содержание NEXEDGE NXR-900-K
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