Desco 的 94370 规格书

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TB-5506 5/06 Page 1 of 2
Ground Gard 5 Verification and
Calibration Tester
Calibration and Installation Instructions
ESD Systems.com • 432 Northboro Road Central • Marlboro, MA 01752 • (508) 485-7390 • Fax (508) 480-0257 • Website: ESDSystems.com
Figure 1. SPI 94370/94371 Calibration Unit for Ground Gard 5
Ground and Power Test
Plug existing Ground Gard 5 power plug from wall cube into test
unit connection. Plug test unit cord into Ground Gard 5 head
module to be tested.
RESULTS: Ground sense led on head module should be green,
power led on tester should be green.
STEP #1: Pressing button #2 simulates an open ground condition.
RESULTS: The ground sense led should flash red and alarm ( on
audible unit only ) showing the Ground Gard 5 is working
properly.
STEP#2: Pressing button #3 simulates a high resist condition
(Over 10meg ohm).
RESULTS: The ground sense led should oscillate from green to
amber indicating the Ground Gard 5 is working properly.
STEP#3: Attach coil cords (provided) to the wrist strap remotes,
with toggle switch in left position.
RESULTS: Left/right LEDS should flash red and alarm Indicating
an open ground.
Wrist Strap Test and/or Calibration
Place toggle switch in the right position for the following tests.
Ground Gard 5 leds should remain green.
Test:
STEP# 1: Pressing buttons 1 or 4 simulates a high resist
condition in the left/right remote unit.
RESULTS: The wrist strap LEDs on the Ground Gard 5 module
should flash red indicating the remote adjustable tolerance are
correct and working properly.
If the wrist strap leds do not operate correctly in step#1, they
should calibrate remote units. Use this tester to calibrate remotes.
See Ground Gard 5 calibration procedures on page 2.
Resistance Verification of Tester 94370
Figure 2. Switches 1 and 4
SWITCHES # 1 AND 4 are for right and left wrist strap test and
calibration. To verify place one ohmmeter probe at the female
banana located in front of unit, and the other probe at the collar.
SWITCHES 1 OR 4 NOT depressed readings from female banana
plug to ground collar will read 1.5 meg ohms ± 2%.
SWITCHES 1 OR 4 DEPRESSED readings from female banana
plug to ground collar will read 2.0 meg ohms ± 2%.
Figure 3. Switch 2
SWITCH #2 - DEPRESSED simulates an open ground condition..
To verify place one ohmmeter probe at the ground point on the
back of the 3.5mm plug, and the other probe at the collar will read
OPEN.
SWITCH #2 NOT depressed will read 0 ohms.
TECHNICAL BULLETIN TB-5506
Made in America
© 2008 DESCO INDUSTRIES INC.
Employee Owned
1234
LEFT SWITCH RIGHT
LEFT OPEN HI RIGHT
W/S GRD. RES. W/S
POWER
GREEN O.K.
RED POLARITY
INCORRECT
NO LITE NO POWER
GROUND
COLLAR
LEFT
FEMALE
BANANA
RIGHT
FEMALE
BANANA
1234
LEFT SWITCH RIGHT
LEFT OPEN HI RIGHT
W/S GRD. RES. W/S
POWER
GREEN O.K.
RED POLARITY
INCORRECT
NO LITE NO POWER
GROUND COLLAR
GROUND TIP
D COLL R I )
Figure 4. Switch 3
SWITCH #3 - Depressed add resistance into the line of 10.6 meg
ohm and simulates a high resistance. To verify place one ohm
meter probe at the ground point on the back of the 3.5mm plug,
and the other probe at the collar, reading will be 10.6 meg ohms
± 2%.
Calibration Procedures for Wrist Strap
Remotes
Wrist Strap Remotes Description:
Inside both remote modules are infra red sensors that react to the
insertion of a wrist strap wire with a banana plug. When the
banana plug is inserted, the base unit is activated for that remote
module. The Monitor head LED for the left or right wrist strap will
lite showing the condition of that strap, if correct the LED should
be GREEN. Should the wrist strap fail, be worn incorrectly or
removed by the operator, the red indicator will flash, calling
attention to a problem. Should the ground connection be lost, the
red light and alarm will be activated. The monitors are continuous
and even a momentary break will cause alarms. The remote
modules are set at the factory to allow for sensitivity of the
"average" human body model.
Calibration Procedures:
With coils wires connected to test unit and each remote, observe
the following. i.e. both lites should illuminate green on the head
module, with no buttons depressed on the tester. Pressing button
one or four should cause the left or right wrist strap led to go red
simulating a high resist condition on the wrist strap, this shows
the wrist remote is properly calibrated.
If the above conditions are not met do the following
adjustment.
With buttons one and four not depressed, the led display on the
head module should be in a green condition. If not, find the
adjusting port on the remote. Inside there is an adjusting trim pot,
turn trim pot ever so slightly until the head module led turns green.
STEP ONE: Turn the pot until the green led triggers red, ease
back until led triggers green.
STEP TWO: Now press the corresponding button 1 or 4 on the
test unit and the led will go red on the head module. This shows
the Ground Gard 5 remote is in a proper calibration.
Note: If the unit does not go red go back to step one and repeat
procedure.
Custom Installation Adjustments:
Should your system alarm, without obvious cause, first trouble
shoot and verify all connections? If all the connections are correct,
the remote should be adjusted to compensate for a different HBM
(human body model). The factory presets at 100pf and your
operator might be out of the normal tolerance range caused by
body chemistry, bulk capacitance or impedance differences.
Follow these steps to adjust and personalize the remote module.
1. Find the small hole in the face of the REMOTE module unit.
(Hole may be covered by Factory Adjustment Label) Inside this
hole is a trim pot device that is adjustable by using a small flat
head screw driver tool. With the system set up, operating and the
operator's wrist strap connected to the remote module.
2. Turn the pot until the green light begins. Disconnect the wrist
wire from the band. The unit will alarm and activate the red light. If
not, turn the trim pot until the red light activates. Reconnect the
wire to the wrist band and the alarm will cease and the green light
will activate.
TB-5506 Page 2 of 2
ESD Systems.com • 432 Northboro Road Central • Marlboro, MA 01752 • (508) 485-7390 • Fax (508) 480-0257 • Website: ESDSystems.com
© 2008 DESCO INDUSTRIES INC.
Employee Owned
1
234
LEFT SWITCH RIGHT
LEFT OPEN HI RIGHT
W/S GRD. RES. W/S
POWER
GREEN O.K.
RED POLARITY
INCORRECT
NO LITE NO POWER
GROUND COLLAR
GROUND TIP
Limited Warranty
SPI expressly warrants that for a period of one (1) year from the date
of purchase, SPI Calibration Units will be free of defects in material
(parts) and workmanship (labor). Within the warranty period, the
product will be tested, repaired, or replaced at our option, free of
charge. Call our Customer Service Department at
909-664-9986
for a
Return Material Authorization (RMA) and proper shipping instructions
and address. Include a copy of your original packing slip, invoice, or
other proof of purchase date. Any unit under warranty should be
shipped prepaid to the SPI factory. Warranty repairs will take
approximately two weeks.
If your unit is out of warranty, call Customer Service at
909-664-9986
for a Return Material Authorization (RMA) and proper shipping
instructions and address. SPI will quote repair charges necessary to
bring your unit up to factory standards.
Warranty Exclusions
THE FOREGOING EXPRESS WARRANTY IS MADE IN LIEU OF ALL
OTHER PRODUCT WARRANTIES, EXPRESSED AND IMPLIED,
INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE WHICH ARE SPECIFICALLY DISCLAIMED. The express
warranty will not apply to defects or damage due to accidents, neglect,
misuse, alterations, operator error, or failure to properly maintain, clean
or repair products.
Limit of Liability
In no event will SPI or any seller be responsible or liable for any injury,
loss or damage, direct or consequential, arising out of the use of or the
inability to use the product. Before using, users shall determine the
suitability of the product for their intended use, and users assume all
risk and liability whatsoever in connection therewith.