DESCO WEST
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST
- One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website:
Desco.com
TB-3058
Page 4 of 5
© 2013 DESCO INDUSTRIES, INC.
Employee Owned
8. Plug the power adapter into the outlet and connect its
plug into the power jack located at the back of the Control
Unit. The green worksurface LEDs should illuminate. If
the red worksurface LED(s) illuminate and alarm, inspect
the snap fastener and ground cords for proper connection.
The operator LEDs will illuminate red when an operator is
not connected. The Dual Operator Continuous Monitor is
now ready for use.
Installation on Micastat
®
Laminate
Materials Needed:
2 Flush Mount Ground Laminate Inserts
1 Installation Tool for Flush Mount Insert
1. Install the Flush Mount Inserts first. It is recommended to
install one in the right back corner and the other in the left
back corner of the Micastat
®
laminated bench top.
2. Once both inserts are installed, cut the ground cord
supplied with the monitor into two pieces; make sure that
the tinned end is long enough to connect from the
worksurface terminal on the Satellite Remote to one of the
flush mount terminals located under the bench.
3. The remaining wire can then be used to connect the other
flush mount terminal to ground using the supplied ring
terminal. The shrouded molded end can then be cut off.
When complete, one flush mount terminal will connect the
Micastat
®
laminate to ground while the other will connect
it to a satellite remote. The satellite remote then monitors
the ground connection between the two inserts, and since
Micastat
®
is the only ESD laminate made with a physical
uniform ground layer, it will monitor the entire Micastat
®
surface ground. The wires will stay under the bench,
maximizing the usable space on the bench top.
Operation
When the satellite remote unit is installed and connected
to a grounded ESD protective worksurface, the monitor’s
green worksurfaces LED’s and red operator LED’s should
be illuminated. The monitor takes 6 seconds to activate its
audible alarm circuitry when first powered.
To use the monitor
:
1. Plug a wrist strap cord, into the jack labeled OPERATOR
on the satellite remotes. This automatically activates the
selected operator channel. The red operator LED should
illuminate, and the buzzer should sound.
2. Remove the charges from your body by making contact
with a properly grounded ESD worksurface. Snap the
cord to the wristband, which should fit snugly on your
wrist. This should silence the alarm and cause the LEDs
to switch from red to green. If this does not happen,
check the wrist cord for continuity or damage. Examine
your wristband and ensure that it has a secure fit. If you
have dry skin, use ESD hand lotion such as Menda
35666
Reztore™ ESD Hand Lotion.
When leaving the area, the operator may take the wrist cord
along or unsnap the cord from wristband and attach it to
the parking snap located on the satellite remote. This will
de-activate the alarm and allow the operator to leave the
workstation. If the cord is plugged into the OPERATOR jack,
the monitor will alarm continuously until the cord is either
parked or unplugged.
WORKSURFACE CHANNEL
The Dual Operator Continuous Monitor’s worksurface
monitoring circuitry is sufficiently sensitive to detect
extremely low current, allowing it to be used with mats having
a resistance of up to 1 x 10
7
ohms (10 megohms). If the user
desires not to monitor the worksurface, the circuit can be
bypassed with the switch located at the rear of the satellite.
When the monitor is connected to a static dissipative
worksurface, the amount of current that flows is a function of
the total resistance between the monitor and the worksurface
to ground. When the resistance of the worksurface is below a
present threshold, the monitor will indicate good. Conversely,
if the resistance level is high when compared to the monitor’s
reference, the unit will alarm. This is an integrating resistance
measuring circuit. Therefore, it is relatively insensitive to
externally induced electromagnetic fields. The resistance
threshold is factory set to 10 megohms (1 x 10
7
ohms).
Custom worksurface range is available upon request.
Contact customer service for more details.
Note
: Per ESD S6.1, Grounding paragraph 4.1.1 “Every
element to be grounded at an ESD protected station shall
be connected to the same common point ground.” The
ESD control plan should include a tailoring** statement
that continuous monitors are used and that consistent with
manufacturer’s design grounding is via AC adapter cord to
equipment ground.
Maintenance and Calibration
The Dual Operator Workstation Continuous Monitor is solid
state and designed to be maintenance free. It is calibrated
to NIST traceable standards. There are no user adjustments
that can be made. Because of the impedance sensing
nature of the test circuit, special equipment is required
for calibration. We recommend using the Desco
98220
Continuous Monitor Calibration Unit whenever calibration
is performed annually or any of the satellite remotes are
replaced. The Calibration Unit is a most important product
which allows the customer to perform NIST traceable
calibration on continuous monitors and can be used to
perform compliance verification required by ANSI/ESD
S20.20 Section 6.2.2.2. The Desco
98220
is designed to be
used on the shop floor at the workstation, virtually eliminating
downtime, verifying that the continuous monitor is operating
within tolerances.
