C-1. Available Accessories and Options
Listed below are the options available for use with
the AMPTEC 620A Series FailSafe Ohmmeters.
Option 620DC: Battery Charger
Option "DC" is an AC/DC converter that converts
115VAC line voltage to 6VDC at 300mA. One
charger is provided as a standard accessory with
every 620A.
A 220 VAC 50 Hz powered Battery
Charger adapter is also available.
Replacement Batteries
The rechargeable Nicad batteries installed in the
620A should provide years of trouble-free operation.
Replacement, however, will eventually be necessary.
The 620A uses four 1.2V cells (5.7 AHr
recommended) installed in a reusable battery box.
When ordering replacement batteries, please specify
AMPTEC Stock #0E-10117, quantity four (4).
Option 100: Carrying Case
Option "100" is a hardshell (impact resistant plastic)
shock absorbing foam lined meter and accessory
carrying case for the 620A Ohmmeter with extra
room for test leads, battery charger, Kelvin Clip Test
Leads, Connector Adapters, single pointed probes
and operator manual etc.
Option RACK: Rack Mount Adapter
Option "620RACK" includes an adapter tray that
allows any AMPTEC 620 series tester to be flush
panel mount installed in a standard 19"
equipment rack.
C-2. Test Lead Sets and Probes
Option “290" Alligator Clip Lead Set
Option "290" is the recommended general
purpose Alligator Clip test lead set (red and
black)
for models not having a 2.0 Ohm range
(due to a small resistance “offset” at the tips -
OK for 20 Ohm and higher range units ) . Option
“290" is supplied as a standard item with all
620A-4 (USAF version) ohmmeters as part of
the accessory package. Option “290" is a 48"
long cable set with dual banana plugs at one end.
The other end is terminated with an alligator clip
( red and black) . Some “Squib Resistance” test
panel jacks have a plastic exterior with a
conductive socket center. These alligator clips
will measure (2 wire method) properly with
either upper or lower jaw connected to the
conductive socket center of plastic test panel
jacks. Kelvin Clips see Option “300” (using the 4
wire method)
may have difficulty only if
both
jaws (both upper and lower) do not make
electrical contact with the conductive “resistance
under test” center.
See next page for Kelvin Clips and other
accessories.
SECTION C OPTIONAL ITEMS AND
ACCESSORIES
