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MAN0530 Issue 10 - 11/09 Searchline Excel
2104M0506
3. INSTALLATION AND OPERATION
(d) If the SIG level goes down, change the direction of adjustment.
Maximise the SIG level by making small adjustments in only one plane at a
time.
(e) When the SIG level has been maximised in one plane, make small adjustments
in the other plane until SIG has been maximised in this plane.
(f) Repeat steps (b) to (e) until the SIG level has been maximised in both planes.
At this point, SIG must be bigger than the initial TGT level and any adjustment
either side of the current alignment must result in a reduction in signal level.
If not, repeat steps (b) to (e) until these requirements have been met.
(g) Lock off the alignment by placing a hex (Allen) key in the pair of grub-screws
which control adjustment in a particular plane and simultaneously rotating them
in opposite directions.
(h) Repeat this for the other pair of grub-screws.
(i) Press Enter and the signal levels are checked.
With the SIG level is greater than the TGT level, the signal check should
pass and the screen should display the following message:
Signals OK
Notes:
1. If SIG is less than the TGT value the following message is displayed:
Low Signal
Enter to Retry
2. If SIG is more than the TGT value the screen shows the bar graph screen again.
(12) When the following message is displayed press Enter:
Signals OK
The display changes to show the following instruction:
Ensure Zero Gas
Then Press Enter
Ensure there is a gas-free atmosphere.
(13) Press Enter on the keypad.
The following message is displayed for three seconds:
Zero Calibration
OK
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