Garnet SeeLeveL Special 809-DM User Manual page 34

bits is correct (1/6" and 1/10" is 11 bits). If the number of bits
is not 11 then the bar is bad and must be replaced.
2. Make sure the programmer inch mode is correct to match the
bar. Now press the BAR TST button to put the programmer
into the bar test mode. The INCHES display will now show
what the bar is putting out. Slowly run a float up the bar while
watching the INCHES display to verify bar operation. If the
bar does not operate correctly then it must be replaced. To
return the programmer to normal operation press the BACK
button.
Note: If the programmer is being used to test a bar outside in
bright sunlight, the sunlight may penetrate right through the black
optical input connector and overwhelm the optical input. If this
happens the programmer will appear to not respond to pressing
the BAR or BAR TST button. It will be necessary to shade the
connector with your hand to ensure proper operation.
To test the display:
1. Make sure the programmer inch mode is correct to match
the display. Plug a piece of fiber from the grey OPTO output
connector of the 817 programmer to the optical connector
on the display. If the display shows "no L" then it is bad and
must be replaced (make sure the end of the fiber going into
the display is flashing!).
2. If the display shows some strange reading when the fiber is
plugged in, it may need reprogramming. Copy the existing
programming into an unused memory on the 817 ( just in
case) and then program the display in inches or a known good
program. The display should show "prog" within a couple of
seconds of plugging in the 817 plug, if not it is bad. After the
817 plug is removed the display should match the reading on
the 817 calibration display, if it does not then the display is
bad.
Troubleshooting block diagrams are available on our website,
www.garnetinstruments.com
Page 34 809-DM Manual