B&K Precision 310 - Manual - Manual (Page 7)

-5-
PREPARATION FOR USE
When unpacked, the tester should be inspected for any visible
signs of damage, and the preliminary checks described in the
user's manual should be performed to ensure that it is operating
correctly. If there is any sign of damage, or if the instrument does
not operate correctly, return it to your nearest supplier.
PRELIMINARY CHECKS
Check the battery
• If the battery symbol is shown on the LCD, then replace the
batteries with new alkalines batteries before proceeding.
Check the current regulation:
• Connect the current leads to C and C .
1 2
• Select a range, and short the current test leads. The R led
C
should go off, indicating that the current regulation is ok.
Check the voltage measurement:
• Connect the potential leads to P and P .
1 2
• Short the P and P . The display should indicate 0000.
1 2
• Remove the short from P and P and C and C . Touching the
1 2 1 2
potential test leads P to C and P to C , the R led should lit,
1 1 2 2 P
indicating an over-voltage or over-range.
This proving test can be repeated on all the ranges if need be.
You can also check the polarity indication of the milli-voltmeter by
touching the potential test leads P to C and P to C , the R led
1 2 2 1 P
should lit, indicating an over-voltage or over-range. The - indicator
should be indicating - on the LCD, showing the polarity change.
Total check can be done by shorting all the test leads together C , C ,
1 2
P , P . The display should indicate close to 0000 (depending of the
1 2
crocodiles clips used and how they are shorted). Both RC and R
P
LED should be OFF, indicating that everything work ok.