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PJ250-NV Technical and Maintenance Manual
R.V.R. Elettronica S.r.l. (Bo)
Pag. 27
Verify that both forward power and reflected power are zero.
7)
Connect the R.F.INPUT (2 Fig.2) to a suitable exciter (PTX30-UHT,
TEX20-NV etc.) able to deliver a power of between 20 and 30W.
8)
Connect the Alarms/Interlock Connector (9 Fig.2) to the BNC on the
rear panel of the exciter (Remote Control).
9)
Switch on the exciter with the output power set to the minimum value.
Tune the exciter to a middle band frequency (e.g. 98Mhz), wait for
the PLL to lock, then gradually raise the output power of the
exciter.
Verify the increase in the output power of the PJ250-NV.
Continue this operation until a 250W output value is obtained.
10)
Check the reading of the internal wattmeter of the PJ250-NV with
that of the external one (a discrepancy of about 10% is tolerable).
11)
Increase the drive power until the "Over Drive" led lights.
At this point, the lock condition should disable the amplifier and
exciter for about 90 sec, after which the amplifier will try to
restart.
If the drive power setting has not changed another lock condition
will occur, otherwise the amplifier will restart normally.
In the case of another lock condition, the protection circuit will
make 4 attempts at a restart.
Should this fail, the amplifier will wait for a longer period
(15min.), and make 4 more attempts.
Should this not be successful, the amplifier will remain disabled
indefinitely.
Should the fault not persist during one of these attempts, the
amplifier restarts normally and the protection’s counter will reset
automatically (after 15 min.).
NOTE: The intervals described are nominal.
Содержание PJ250-NV
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Страница 95: ...PJ250 i Appendix Rev 0 1 03 09 02 APPENDIX Description RVR Code Vers Page Power Supply PSSW2812B 0 1 4...
Страница 96: ...PJ250 ii Appendix Rev 0 1 03 09 02 Pagina lasciata intenzionalmente in bianco...
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