A-1. Introduction
to the AMPTEC 620LM
The AMPTEC 630, 640 and now the 620 Series
Igniter Testers/Failsafe Ohmmeters are
becoming the standard in the Safety Igniter
Circuit Test industry, and are designed to
provide extremely safe and reliable resistance
testing of explosive or volatile devices. Safety
Approvals from various Safety Boards include,
the U.S. Air Force ( 620A-4) for generic use on
Non-Nuclear munitions and the US NAVAL
ORDNANCE CENTER (630BN, 640N and
other versions pending). Some of the devices the
620LM Igniter Tester may be used on include:
fuses, squibs, igniters, explosive bolts, rocket
motor squibs, automobile air-bag initiators and
many others.
The AMPTEC 620LM is a 4-wire failsafe digital
ohmmeter which has been designed to reliably
use very low test currents for its resistance
measurement. Failsafe Output Circuitry
proprietary to AMPTEC RESEARCH ensures
that test current levels do not exceed the
specified "failsafe current" even in a worst-case
component failure situation. The failsafe feature
is tested in every instrument before shipment.
The newer 620 series represent the latest in
ultra-safe Igniter Tester measurements. The
620LM fundamentally uses the same main
printed circuit board (PCB) as all of the
AMPTEC 620A Igniter Testers. The 620LM has
many features which make it useful in a variety
of applications. Please check the last chapter of
this manual for addendums that may apply to the
620LM.
A-2. Receiving, Unpacking, and Initial
Inspection
Should the AMPTEC shipping box appear
damaged upon arrival, request that the carrier's
agent (i.e. UPS) be present when the unit is
unpacked. If the 620LM appears damaged, the
carrier's agent should authorize repairs before
the unit is returned to the factory. Even if the
instrument appears undamaged, it may have
suffered internal damage in transit that may not
be evident until the unit is operated or tested to
verify conformance with its specifications.
If the unit fails to operate or fails to meet the
performance specifications of Section B, notify
the carrier's agent and the nearest AMPTEC
Sales Office. Retain the shipping carton for the
carrier's inspection.
DO NOT
return
equipment to AMPTEC RESEARCH
or any
of its sales offices
without first obtaining
an
(RMA) Return Material Authorization number.
We need to know who to contact and how to
contact (i.e. phone number and FAX number) in
order to properly coordinate the return of the
repaired AMPTEC product.
By calling AMPTEC RESEARCH first, prior
to just returning the 620LM , we can often
troubleshoot (based on the symptoms you
describe) and identify the problem over the
phone (i.e battery loose in the battery holder).
We may possibly be able to fix the problem over
the phone and prevent you from having to return
the unit to AMPTEC for repair.
R M A
SECTION A - RECEIVING AND INITIAL INSPECTION
