10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110
5-2
MAINTENANCE
Precision four terminal resistors with accuracy of 0.05% or
better: 1 mΩ, 1.9 mΩ, 19 mΩ, 190 mΩ, 1.9 Ω, and 19 Ω
A standard 4 ½ digit digital voltmeter: with 2 V range,
accuracy better than 0.03% of reading ±1 count.
Screwdrivers: Medium Phillips and small slotted for trim-pot
adjustment.
Three 20 AWG approximately 4 inch long Buss Wires
Four 18 AWG Wires (or dual wire cable) approximately 2 feet
long with clips
5.4 Calibration
CAUTION
SAFETY PRECAUTIONS MUST BE TAKEN WHEN HANDLING
THIS INSTRUMENT WHEN THE LINE CORD IS PLUGGED IN
AND THE R1L-BI/R1L-BIR HAS BEEN REMOVED FROM ITS
CASE, TO ENSURE THAT CONTACT IS NOT MADE WITH THE
AC POWER CONNECTIONS OR OTHER POTENTIALLY
HARMFUL POINTS. FAILURE TO OBSERVE PROPER SAFETY
PRECAUTIONS MAY CAUSE SERIOUS HARM TO THE
OPERATOR AND/OR DAMAGE THE INSTRUMENT.
A.
Preparation
1.
Remove the front panel assembly from the case by
removing the four retaining screws. Retain the four
screws for reinstallation.
2.
Install a new set of approved batteries into the UUT
as required. Observe polarity.
3.
Plug UUT in and turn on setting the range switch to
20
Ω
range, allow a 14 hour charge time. (Skip this
step if batteries have already been charged.)
4.
After the UUT has been charged, unplug the UUT.
5.
Allow a 10 minute COOL DOWN.