3M 724 Instructions Manual - Note:
17
• One two-conductor cable with
standard 3.5 mm (miniature)
phone plug attached on one end
and appropriate connectors on the
other end to connect to RSB.
Note:
Two-conductor cable must have an
isolation resistance of >1 Gigohm
between conductors. Two separated
wires may also be used to obtain
higher isolation resistance.
• Two wires with alligator clips.
• Ohmmeter capable of measuring to
45 Megohms ±0.5%, to verify the
RSB.
Procedure:
Work Surface
a) Access the DIP switches SW1 and
SW2 through a slot located at the
bottom of the chassis. Adjust SW1
to the LOUD position and SW2 to
the ON position with a small
screwdriver (Fig 4).
b) Plug in the AC adapter. Note that
the red high work surface lamp
(M) is illuminated with an audible
alarm (slow chirping beep).
c) Adjust DIP switch SW1 to the
SOFT position. Note that the
loudness of the alarm decreases.
d) Adjust DIP switch SW2 to the
OFF position. Note that the audible
alarm is silenced.
e) Attach the 3M
™
2380 Monitor/Table
Mat Cord and the 724 ground wire
to the RSB using the two wires with
alligator clips. Set the resistance as
follows and observe Model 724
monitor output:
3.1 Megohms – Red work surface
lamp (M) OFF.
4.3 Megohms – Red work surface
lamp (M) ON.
f) Disconnect the cords from the RSB.
g) Connect the ring terminal end of the
Model 724 ground wire to the metal
snap of the 3M
™
2380 Monitor/Table
Mat Cord. The red work surface
lamp (M) should now be OFF.
Wrist Strap
Set Resistance Limit 10 Megohms and
Test Voltage 9v (Fig. 2).
h) Connect the two-wire cable with
3.5 mm phone plug into the #1 input
of the Model 732 Dual Conductor
Remote Input Jack and attach the
other end to the RSB. Set the
resistance as follows and observe the
Model 724 monitor output:
1.3 Megohms – Yellow low lamp (L)
flashing, green (OK) lamp (1) ON,
and audible alarm OFF.
1.7 Megohms - Yellow low lamp (L)
OFF, green (OK) lamp (1) ON, and
audible alarm OFF.