Tait TM9455 User Manual

128 Troubleshooting
Test Description
Audio loopback
test
Routes audio from the microphone to the radio’s
internal and external speakers.
Before running this test, turn the volume down to
limit interference and reduce the impact of audio
artefacts.
Display freq Displays the transmit and receive frequencies of the
current channel. Also displays the channel status
(CNV, TCH, CCH
1
) and the mode (ANA, PH1 or
PH2
2
). If the radio is scanning this information may
not be available.
GPS NMEA
data
Displays the last raw data received from a GPS
antenna/receiver connected to the radio. The radio
will display all supported sentence formats received
(for example $GPRMC and $GPGGA sentences).
Note that the display will not automatically refresh
when new data is received.
Keypad test Sounds an audible tone when a key is pressed or
released on the radio. The radio also displays the
key name along with “pressed” or “released”.
QoS
(P25 channels
only)
Displays information about the quality of service
(received signal strength (RSSI) with an indication of
digital voice quality). Also displays the channel
status (CNV, TCH, CCH
1
) and the mode (PH1 or
PH2
2
).
RSSI Displays the received signal strength (RSSI) of the
current channel.
Rx Tone Receives a 1011 Hz or 1031 Hz tone and displays
the received signal strength (RSSI) and the bit error
rate (BER) of the received signal. Also displays the
channel status (CNV, TCH, CCH
1
) and the mode
(PH1 or PH2
2
). On a P25 conventional channel, the
user can select whether to receive a 1011 Hz (Phase
1) or 1031 Hz (Phase 2) tone. On a P25 trunked
channel, the network selects whether 1011 Hz or
1031 Hz is used.
Site display Shows the channel number, signal strength and
system-identity code (SYSCODE) for the currently
registered trunked site.
Site measure Lists the current trunked site (indicated with an
asterisk) and up to six detected adjacent sites, with
received signal strength (RSSI) information.
Tone test Generates an audible tone for the duration of the
test.

Tait TM9455 Specifications

General

Brand	Tait
Model	TM9455
Category	Radio
Language	English