Operation; Application Notes; Base Station Use; Remote Use - LDG M-7700 Operation Manual

OPERATION

Operation of the M-7700 is completely transparent. Simply operate the transceiver as usual, and the
M-7700 will display the selected parameters during transmit and receive operation. If the display of
different parameters is desired, simply repeat the Meter Parameter Selection as required.
The M-7700 has a blue backlight that may be turned on or off using the backlight power switch
located on the top rear of the M-7700. The brightness of the backlight may be adjusted by inserting a
screwdriver into the hole marked Backlight on the rear of the M-7700 and turning gently.

APPLICATION NOTES

Base Station Use

The M-7700 may be placed nearly anywhere on the operating desk. The included 1/8" stereo
connection cable provides the ability to place the meter up to several feet away from the transceiver.
Some obvious choices include on top or beside the radio, or near the station computer.

Remote Use

The M-7700 may be placed farther away from the IC-7700 if desired. A standard 1/8" stereo
headphone jack extension cable is all that is required to connect the M-7700 to the external meter jack
on the IC-7700.

Other Applications

LDG designed your M-7700 specifically for the Icom IC-7700 transceiver, and does not recommend
using it in any other application. However, the meter is, in fact, simply a 500 micro-amp meter
movement; the calibration potentiometer allows a range of .5 - 2 mA. If you choose to use it in a
different application, take care not to exceed the maximum current specification; the meter movement
will be damaged or destroyed by current in excess of this specification.
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