RVR Solar VJ1000, Руководство пользователя

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VJ1000
32 / 40 USER MANUAL Rev. 3.0 - 26/02/01
N.B. Several attempts may be necessary. At least 60 seconds should be allowed
inbetween attempts to allow an automatic reset.
3) CALIBRATION OF THE GRID CURRENT (IG) ALARM THRESHOLD
a) Connect the unit to the line supply and connect a dummy load (50Ohms 1.5KW).
b) Switch the ST.BY. switch (15 Fig.1) to ST.BY.
c) Wait for the fan to build up pressure.
d) Perform the SETUP 3 procedure and steps required to calibrate the grid current IG
(paragraph 5.5).
e) Adjust the reading (regulating the supply) to 22 mA.
f) Adjust trimmer R21 until the IG protection is activated i.e. when the IG indicator (12
Fig.1) comes on.
g) Reduce the indicated current to 10 mA.
h) Wait for the automatic protection cycle to complete and repeat step e) to verify the
correct alarm threshold (22 mA).
8.3 Calibration of the PWR Meter (REF)
Perform the calibration procedure for the V.S.W.R. protection upto step b) (paragraph
5.2 (2)).
At this point verify that the VJ1000 meter reading is correct; adjustment may be made with
trimer R6 situated in the directional coupler on the output of the low-pass filter, near the
antenna connector.
To gain access to it, remove the small protection cover.
8.4 Calibration of the PWR Meter (FWD)
Perform SETUP 2 (Fig.4).
1) Connect a 50 Ohm 1.5KW dummy load in series with a bypass wattmeter (Byrd model
43), switch on the amplifier and verify the correct reading of the VJ1000’s meter.
2) Adjust trimmer R9, situated inside the directional coupler on the output of the low-pass
filter, near the antenna connector.
3) To gain access, remove the small protection cover.
N.B. The trimmer R2 connected in series with the meter allows small adjustments
after the calibration of PWR, REF and FWD, and is normally in a central position.
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