Chapter 1
Installation
1-5
Output Connections
Note: If you are using the SQM-242 as a monitor only, no output connection is needed.
The SQM-242 output connection is via a ¼” Stereo Phone Jack. A standard ¼” Stereo
Phone Plug is shown below (with outer collar removed to show the contacts). Output 1
is on the ring, Output 2 is on the tip, and a common ground is on the sleeve.
Connect the SQM-242 output to your evaporation power supply, recorder, or other
equipment as described in the equipment’s User Manual.
C
AUTION
: Special care must be taken in connecting the SQM-242 card output to the
input connector of your equipment. Failure to understand and follow the equipment
manufacturer’s instructions can result in damage to the equipment and/or SQM-242
card.
The SQM-242 output is 0 to
±
10 VDC. See section 3 of this manual for instructions on
setting the SQM-242 output Full Scale level to match your power supply.
If your
equipment needs a 4-20 mA control signal, you must obtain a voltage-to-current
converter.
Ground Connection
The chassis of all control components should be tied to a common earth ground using a
low resistance cable. This is particularly important in high noise Ebeam systems.
SLEEVE
Chan. 1 (Ring)
Chan. 2 (Tip)
Ground
(Sleeve)