3
Carefully replace the front cover. Make certain that the interconnect cable does not
interfere with the pushbutton. When tightening the captive screws, apply equal torque.
Do not over tighten since this will distort the rubber gasket.
4.0 OPERATION
4.1 Testing cable and wrist strap only
a. Place STRAP SELECT Switch in the STRAP ONLY position.
b. Connect the grounding end of the cable to the appropriate mating banana
jack or snap located on the front of the unit. If the strap has a clip connection,
attach the clip to one of the snaps.
c. Touch the main grounding point on the strap to the Push-To-Test Button and
then depress the button.
d. If the cable/wrist strap assembly resistance is between the specified limits
(assembly good), the Red FAIL Light will flash and the beeper will sound
momentarily, then the Green PASS LED will light continuously indicating the
strap is good.
e. If the assembly resistance is below (shorted or low resistance) or above (high
resistance or broken resistor, wire or connection) the specified limits, the Red
FAIL light will continue to flash on and off and the beeper will continue to
sound indicating a defective cable/wrist strap assembly.
f. The cable or wrist strap portion of the assembly that contains the limiting
resistor can be tested separately by following the procedure in “a” to “e”
above.
4.2 Testing cable/wrist assembly on wearer’s wrist
a. Place the STRAP SELECT Switch in the STRAP & WEARER position.
b. Connect the grounding end of the cable to the appropriate mating banana
jack or snap located on the front of the unit. If clip connection is used, attach
the clip to one of the snaps. Attach the strap to the wrist in a normal manner.
c. Depress the PUSH TO TEST button and observe the PASS/FAIL indicators.
d. If the total system resistance (cable/strap/wearer) is within the specified limits
(system good), the Red FAIL light will flash and the beeper will sound
momentarily, then the Green PASS LED will light continuously, indicating that
the Cable/Strap/Wearer system is good.
e. If the total system resistance is below (shorted resistor) or above (broken
resistor and/or wire, open connection or poor contact between the strap and
wearer) the specified limits, the Red FAIL light will continue to flash on and off
and the beeper will continue to sound, indicating a defective
cable/strap/wearer system.
f. If
the
cable/strap/wearer system fails, check the cable/strap assembly alone
as described in Section 4.1 above. If the cable/strap assembly checks good,
the problem is poor contact resistance between the wearer and the wrist strap
assembly. The wearer may have to apply a lotion to the skin to improve
contact.
