The panel is marked and color coded to permit easy and accurate selection of any of its
positions. There is a “Transit” position for vibration protection during travel, and a blank
position between ohms and mA to protect against accidentally switching between ranges.
The left knob rotates between 3 positions -DC, DC and AC.
Precise, gradual adjustment of zero ohms is made possible by the right hand knob . This
control is also used to set the 100% reading for “ON” time measurements, when used
together with the “Push to Set” switch. With the button depressed the right hand knob now
adjusts the “ON” time full scale.
REPLACEABLE COMPONENTS
A 1.5 V size D battery powers all resistance-measuring ranges. The low battery voltage is
aimed at preventing the accidental tripping of relays during the measurement of relay circuit
resistance.
One 9.0 volt Alkaline battery powers the “ON” time measuring circuit. Other 9.0 volt alkaline
powers the Rx 1K circuit.
The glass fuse unclips for fuse replacement.
Note:
The rear case must be removed to replace the cartridge fuse. No other components
are replaceable or serviceable by the user.
Figure 2. Rear View (Battery Cover Removed)
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