Acom 1011 Kullanım Kılavuzu - Sayfa 17

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well as the reflected power and tuning quality, etc., are continuously monitored by the micro-controller.

Many software-derived protections are based on this information.

* Detailed electrical schematic diagrams are available from ACOM or from your dealer on request.

5-5. Service Functions

By pressing the OPER and RTTY buttons simultaneously, the upper LED bar-graph is switched to the

service mode, which is indicated by both red bar-graph lights and the yellow G1 light illuminating. Pressing

the OPER and RTTY buttons together again will select additional service measurement functions.

Pressing them a final time will return the amplifier to the normal operating mode. These steps are

detailed below:

a) Press the OPER and RTTY buttons together. The two red lights on the right side of the upper

bar-graph will illuminate to confirm that the amplifier is in the service mode. The yellow G1 light will

also illuminate. The upper bar-graph should show a grid 1 current reading no higher than 5 mA (5 LEDs

illuminated).

b) Pressing the OPER and RTTY buttons once again will now illuminate the yellow G2 light. This

provides an approximate reading of grid 2 voltage. The upper bar graph should show a voltage reading

within the range of either 270-330 Volts (9-11 LEDs illuminated) for RTTY or 210-360 Volts (7 to 12

LEDs illuminated) for SSB and CW.

c) Pressing the OPER and RTTY buttons yet again will illuminate the yellow IP light. This provides an

approximate reading of combined plate current and grid 2 current. The reading should be no higher

than 500 mA (10 LEDs illuminated) for RTTY or 550 mA (11 LEDs illuminated) for SSB and CW.

d) Pressing the OPER and RTTY buttons a final time will restore the upper bar-graph to its normal

function of indicating peak forward power.

NOTE

The auto-protection system will continue to operate in the service mode.

a) Frequency Coverage: All amateur bands in the 1.8-29.7MHz frequency range; extensions and/or

changes on request.

b) Power Output: 700 W PEP or 500 W continuous carrier.

c) Intermodulation Distortion: Better than 35 dB below rated output.

d) Hum and noise: Better than 40 dB below rated output.

e) Harmonic Output Suppression: Better than 50 dB below rated output.

f) Input and Output Impedance:

- Nominal value: 50 Ohm unbalanced, UHF (SO-239) type connectors;

- Input circuit: broadband, VSWR less than 1.2:1, 1.8-30 MHz continuously (no tuning, no switching);