CALAMP WIRELESS NETWORKS INC. BDD4T881S2 Manual De Usuario

Paragon-III  Technical Manual

5.2.4  Power Amplifier Module (T889 (800-870 MHz only), T859)

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Re-install the exciter module into the Paragon-III rack frame.

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Connect the Exciter module to the Power Amplifier.

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Connect the Power Amplifier output to the IFR T/R connector or to a stand-alone BIRD style
power meter, terminated with a 150W dummy load.

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Forward and reverse power alarm set (control) are identified on the PA cover.

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Key the transmitter on the exciter and adjust the PA output for required output (max 100W for
UHF and max 70W for 800) using the front panel power control

If power cannot be reached, refer to section 5.2.4.4 for T859 UHF model, or factory technical
support for T889 models. Cable loss should be included in the reading.

1.  Power up the PA and adjust front panel power control so that the output power is at the alarm

level required, usually 20% lower than nominal value (e.g. 40W if the PA normally operates at
50W).

2.  Adjust the forward power alarm set (T889: RV101and T859: RV48) so that the forward power

alarm LED lights.

3.  Adjust front panel power control for the normal operating power level

1.  Power up the PA and adjust the front panel power control for the normal operating power level.

2.  Connect an unterminated 3dB 150 W pad to the PA output (e.g. 3:1 VSWR) and adjust the

reverse power alarm set (T889: RV105 and T859: RV52) so that the reverse power alarm LED
lights.