Audio miniTX - Manual (Page 2)

Connecting the antenna
Connect the flexible antenna to the SMA connector.
Switching on
Insert the microphone plug (only the 4-pin Lemo version
turns on the miniTX).
The red LED illuminates momentarily under the top cover to
indicate that the transmitter has been turned on.
Switching off
To turn the transmitter off remove the Lemo plug (4-pin
Lemo version only), or put the miniTX in sleep mode by
switching it off using the SwitchiR. Alternatively the miniTX
can be turned off or on, even through clothing, using the
Control-X.
In sleep mode the orange LED will flash every two seconds
and the transmitter will draw very little current.
Connecting the audio input
Connect the microphone or input cable to the four-pin Lemo
socket.
A positive microphone bias voltage is provided, enabling the
majority of modern lavalier microphones to be used with
the miniTX.
Selecting the operating frequency
You can check or change the operating frequency of the
miniTX via the infra-red control using the SwitchiR.
To check the frequency:
•
Press MENU. The display shows:
FREQUENCY
MHz
Fr
FREQUENCY
Tx MHz
854.900
CHANNEL
01
CHANNEL
32
FREQUENCY
Tx MHz
857.950
Error
•
Align the front of the SwitchiR with the infra-red port on
the miniTX and press OK.
The display shows the current frequency; for example:
FREQUENCY
MHz
Fr
FREQUENCY
Tx MHz
854.900
CHANNEL
01
CHANNEL
32
FREQUENCY
Tx MHz
857.950
Error
To change the frequency:
•
Press OK. The display will alternately flash between
showing the frequency and channel number. For
example:
FREQUENCY
MHz
Fr
FREQUENCY
Tx MHz
854.900
CHANNEL
01
CHANNEL
32
FREQUENCY
Tx MHz
857.950
Error
•
Press or to scroll through the 32 frequencies read
from the transmitter until the desired frequency or channel
is displayed. For example:
FREQUENCY
MHz
Fr
FREQUENCY
Tx MHz
854.900
CHANNEL
01
CHANNEL
32
FREQUENCY
Tx MHz
857.950
Error
•
Point the SwitchiR at the infra-red port on the miniTX and
press OK. If the command was received successfully the
display will show the new set frequency. For example:
FREQUENCY
MHz
Fr
FREQUENCY
Tx MHz
854.900
CHANNEL
01
CHANNEL
32
FREQUENCY
Tx MHz
857.950
Error
Otherwise it will show:
FREQUENCY
MHz
Fr
FREQUENCY
Tx MHz
854.900
CHANNEL
01
CHANNEL
32
FREQUENCY
Tx MHz
857.950
Error
•
Repeat the above steps if an error message is displayed,
moving the SwitchiR closer to the infra-red port.
Setting the gain
The steps between gain settings 2-9 are approximately 3
to 4dB. Set the gain position so that the Overload indicator
does not flash on during normal operation.
Note: On the miniTX gain settings 0, 1, and 2 are the same.
To check the gain setting:
•
Press MENU followed by . The display will indicate:
AF LEVEL
TxRx
AF
AF LEVEL
Tx
AF LEVEL
Tx
9
AF LEVEL
Tx
9
Error
Tx
LF Cut
Tx
OFF
2
•
Align the front of the SwitchiR with the infra-red port
of the miniTX and press OK. The display will show the
current transmitter gain setting:
AF LEVEL
TxRx
AF
AF LEVEL
Tx
AF LEVEL
Tx
9
AF LEVEL
Tx
9
Error
Tx
LF Cut
Tx
OFF
2
To change the gain setting:
•
Press OK again. The display will flash the level setting.
•
Press or to step between gain settings 2-9 until the
required gain setting is displayed. For example:
AF LEVEL
TxRx
AF
AF LEVEL
Tx
AF LEVEL
Tx
9
AF LEVEL
Tx
9
Error
Tx
LF Cut
Tx
OFF
2
•
Align the front of the Switch iR with the infra-red port
on the transmitter and press OK. If the command was
received correctly the display will show the new gain
setting. For example:
AF LEVEL
TxRx
AF
AF LEVEL
Tx
AF LEVEL
Tx
9
AF LEVEL
Tx
9
Error
Tx
LF Cut
Tx
OFF
2
Otherwise the display shows:
AF LEVEL
TxRx
AF
AF LEVEL
Tx
AF LEVEL
Tx
9
AF LEVEL
Tx
9
Error
Tx
LF Cut
Tx
OFF
2
•
Repeat the previous steps if an error message is displayed,
moving the SwitchiR closer to the infra-red port.
User Guide miniTX transmitter