Instrument Overview
2/24/2010 | 71-018 V11 EN
D12R, D6R, D3R Users Manual
15
Initial tester power-up and checkout
Upon powering up the D3R/D6R/D12R the digital control system begins a self check. Memory
is tested, HiPot trips circuits armed, high voltage power supplies disabled, etc. If nothing is
visible on the screen, turn the Intensity control to the center of the knob’s range. If no image
is visible, verify good power is available to the unit and verify the fuses aren’t blown.
Each Baker Instrument Company, an SKF Group Company, tester incorporates a supply
ground detection circuit. The ground detection circuit is active immediately upon power up on
and assures a positive ground is available to the tester. If the instrument is not properly
grounded, the Open ground indicator will light and testing cannot proceed. Check the supply
to the tester (broken ground, bad extension cord, excessive ground to neutral voltage) and
assure that a low impedance ground is provided to the unit.
If the instrument does not appear to be working properly, contact Baker Instrument
Company, an SKF Group Company’s Service Department. Refer to Warranty Notes and
Appendix B: Troubleshooting for more information.
Using the footswitch
The Digital tester can be equipped with a footswitch that allows hands free operation of the
instrument. For example it is used to help eliminate the display effect of rotor loading, by
allowing the operator to spin the rotor of the equipment under test.
