(1) Instruments and equipment: Shall have current, non-expired
calibration tags traceable to NIST.
(2) Spectrum analyzer: Direct reading and digital. Use slow
sweep, and sweep at least 3 times prior to taking measurements.
(3)
Signal generator:
Frequency synthesized.
(4) Dynamic range:
Minimum of 10 dB above SA requirement of
MIL-STD-188-125.
e.
Independent tester: SA tests shall be performed by an independent
tester regularly engaged in SA testing and tests shall conform to
the procedures contained in modified(orient magnetic loop antenna
co-axial or co-planar or cross whichever gives least SA or maximum
signal pick-up) MIL-STD-285 and MIL-STD-188-125. Independent
tester shall not offer advice or suggestions to correct problem.
General Contractor shall hire the independent tester.
f.
Calibration: Calibrate test set up and signal each time power is
turned off or set up is moved. During test, Government
representative or Government witness reserves the right to verify
the test signal. Calibrate prior to each test, and at the end of
each test. Only the equipments, cables, antennas, amplifiers,
attenuators used for calibration of transmitters and receivers
respectively shall be used for testing.
g.
Interlock alarm configuration tests (field): Test electrical and
functional operation of interlock alarm system, [including cipher
locks (when included)], to verify performance of interlock system.
h.
Force tests (field): Perform test for force required to latch and
release (unlatch) each HEMP shielded door in installed position
(field) in the presence of the Contracting Officer or the
Contracting Officer's representative. Perform test by using a
calibrated force measuring device, which shall record and retain
maximum force required to latch and release (unlatch) until reset.
Modifications or alterations to panic hardware of emergency exit
HEMP shielded door to meetNFPA 101 force requirements for latching
and releasing (unlatching) are prohibited.
i.
Recalibration: At the end of each day, recalibrate if the dynamic
range varies more than 3 dB compared to the beginning of the
calibration of each day. Retest all test points.
3.5.2
EM Shielded Door Tests
**************************************************************************
NOTE: The following test are required for EM
shielded door only.
**************************************************************************
3.5.2.1
SA Due to RM
Perform tests for all test points to determine the SA due to residual RM by
disconnecting the power by unplugging/deenergizing the power source, vice
activating "Open Door Switch." Activating "Open Door Switch" will reverse
the polarity of EM resulting in reduced RM, hence, reduces the force
required to open the shielded door. Perform this test in the field in the
SECTION 13095N
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