Catalog # -
Description
2151.14 -
Replacement Leads
2151.17 -
Optional Hippo Clip Leads
2151.20 (25ft), 2151.23 (45ft) Optional Hippo Clip Lead
Lead Compensation
44kΩ
0kΩ
0kΩ
The Red lead in our set of 3 leads (Cat# 2151.14, shown at right) currently supplied with the
Models 6550 and 6555, includes 1 resistor of 22kΩ on each end to limit the peak short circuit
current.
The Red lead is marked with K22 at each end to identify the
lead type (shown at right).
This creates a 44kΩ lead resistance that needs to be
compensated for in the instrument. NOTE: When
troubleshooting issues and checking lead continuity, these
leads will not pass a straight continuity test. They will
measure 44kΩ.
All 6550 and 6555 Models with firmware version 2.1/2.1 or later allow you to select 0kΩ or 44kΩ lead
compensation before using the meter. Users with K22 marked leads should enable 44kΩ lead compensation on
their 6550/6555. By default, all new products are shipped with K22 leads and 44kΩ lead compensation selected.
To enter the lead compensation selection menu, press
the “Filter” button and hold it down while turning the
switch from the OFF position to the SET-UP position.
6550 & 6555 Megohmmeter – Lead Compensation Feature
Use the and arrow keys to select 44kΩ or 0kΩ. Use the arrow key to select the highlighted entry. After a
few seconds, the meter will reboot and the value is permanently saved until changed again.
If you are using a Red lead with no K22 markings, as provided with our Hippo Clips, the compensation selection
should be set to 0kΩ. The below table shows our currently offered leads and the related compensation needed
in the instrument.
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