AE-780 Operation Manual
Rev. 11/30/12 MKB
T
EST
E
QUIPMENT
U
SED
* Resistance Decade Box
* Test Leads
The resistance decade box required will need a range of from 1 kilohm (10
3
) to 999
meg ohms (10
9
). Measurements greater than 10
9
are calculated using CAD
-
generated techniques, as high resistances greater than 10
9
are difficult to verify with a
test voltage of 9 volts.
Connect the test leads from the resistance decade box to the test probes of the meter,
set the decade box to the desired resistance i.e. 10
3
= 1 K, then press and hold the
meter’s test button. The 10
3
LED should light, 10 K 10
4
LED should light and so on. To
measure the changeover point between decades, increase the resistance of the
decade box while pressing the meter’s test button. Record the resistance when the
next LED lights permanently (this is the changeover resistance).
Example: The first green LED is illuminated 10
3
= 1 kilohm. At 3 or 4 kilohms, 10
4
LED is
illuminated. The changeover point is 3 or 4 kilohms. 10
4
= 10 kilohms so between 3 or 4
kilohms and 30 or 40 kilohms will be the changeover points from 10
4
to 10
5
.
Please note that the meter has no internal parts to adjust, so verification of
calibration can be achieved by using the above process. If verification cannot
be achieved the unit should be returned to the supplier.
Eastern Energy Co., Ltd.
Tel: 66-3844-6117
40/4 Vitoondumri Rd., Banbueng
Page 13 of 13
Banbueng, Chonburi, Thailand
www.eastern-energy.com
www.eastern-energy.net
www.eastern-energy.com
Email: [email protected]
