User Manual

Technalogix Ltd. TM-100 Modulator

5.0 OPERATING PROCEDURE

Preliminary Hook-up

1. Terminate modulator into a 50 ohm load before applying power.

2. Connect the power cord of the Technalogix TM-100 agile modulator to a

proper electrical source as indicated on the back of the unit

3. Observe the front panel. If power is applied and present, the red power

LED will illuminate. Also, all the elements of the displays behind the

display readout window will illuminate momentarily as a display test.

4. Observe the numbers displayed behind the display readout window after

the test. They will indicate:

• Microprocessor software version;

• Internal option dipswitch settings;

• RS-232 unit ID (if so equipped); and

• Last tuned channel.

5. After a moment, the Lock Detect LED will illuminate.

Setup and Operation

A. Output level and channel selection; connecting monitor.

1. Connect a spectrum analyzer, or a field strength meter tuned to the

frequency of the video RF carrier of the desired channel, to the RF

OUTPUT jack on the rear panel of the unit. Alternatively, connect a

spectrum analyzer or a field strength meter to the –20dB TEST POINT on

the front panel of the unit.

2. Select the desired output channel using the CHANNEL SELECT paddle

switch on the front panel.

• Hold the CHANNEL SELECT switch in the up- or down-position

for approximately 3 seconds to activate the channel-select

circuit;

• Toggle the CHANNEL SELECT switch up to select a higher

channel or toggle it down to select a lower channel. The switch

may be held in the up- or down-position for rapid channel

switching.