Adjustment; Radio Programming - Tait TM8100 mobiles Service Manual

Installing the
Microphone Clip
20.2

Adjustment

20.3

Radio Programming

Table 20.1 DTMF microphone settings in the Programmable I/O form, Digital tab
Pin Direction
CH_GPIO1 Input
508 TMAA02-02 DTMF Microphone
Figure 20.1 Correct DTMF microphone grommet seating
1. Install the microphone clip in the most convenient location for the
radio user. It must be within easy reach of the user, but in such a
position that the microphone PTT key cannot be inadvertently
activated or jammed on.
2. Connect the microphone clip to the negative supply if hookswitch
operation is required.
Remove the DTMF microphone back cover and set the DTMF tone level
to approximately 60% deviation (±3kHz for wide bandwidth radios and
±1.5kHz for narrow bandwidth radios).
The following table shows the settings required for CH_GPIO1 in the
Programmable I/O form of the programming application. When
CH_GPIO1 is set to Send Mic Audio To Spkr, then DTMF tones are fed
into the radio's speaker at a reduced volume whenever a key on the DTMF
microphone is pressed. This gives the radio user confidence that the tones
are being transmitted.
Refer to the online help of the programming application for more
information.
Label Action
None Send Mic Audio
To Spkr
microphone
grommet
control head
Active Debounce
High None
© Tait Electronics Limited November 2007
Signal State Mirrored To
None None
TM8100/TM8200 Service Manual