AEMC instruments 6422, Руководство пользователя

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16 Ground Resistance Testers Models 6422 & 6424
Model 6424 only:
Keys Function
V/A
V/A takes voltage measurements (§ 2.1), or
current measurements if a current probe is
connected (§ 2.4). In the latter case, a second
press forces voltage measurements.
Ω
Ω
takes resistance measurements (§ 2.2).
Ω
and TEST pressed simultaneously takes
ground resistance measurements (§ 2.3).
52 %
stores the displayed measurement with the
S rod at 52 % of the distance (§ 2.3.4).
Pressing
and then activates/
deactivates lead compensation.
Pressing
and then for > 2 seconds
compensates the resistance of the leads for the
resistance measurement (§ 2.2.2).
62 %
stores the displayed measurement with the
S rod at 62 % of the distance (§ 2.3).
Pressing
and then turns on
backlighting for one minute, or turns backlighting
off.
72 %
stores the displayed measurement with the
S rod at 72 % of the distance (§ 2.3.4).
Pressing
and then deactivates the
Auto Off feature.
CLR
activates the “second” functions of the
52 %, 62 %, and 72 % keys (§ 2.3).
Pressing
for > 2 seconds erases the
values stored in memory.