MKS 1249A - Chapter Four: Operation; How to Set the Jumpers

Chapter Four: Operation How To Set the Jum
p
ers
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Chapter Four: Operation
How To Set the Jumpers
The 1249 unit contains three user-settable jumpers on its PC board; refer to
On-Board Jumpers,
page 32, for more information. These jumpers determine the:
•
Input type (voltage or current)
•
Full scale voltage (0 to 5 V or 0 to 10 V)
•
Digital input control (TTL or open collector)
To change the jumper settings:
1. Remove power and the cables from the 1249 unit.
Warning
To avoid an electrical shock, be sure to disconnect the
power
before
proceeding.
2. Remove the four (4) Phillips head screws that secure the case.
3. Carefully remove the case to expose the PC board.
4. Change the position of the appropriate jumpers.
Refer to Figure 7, page 32, for the location of the jumpers.
5. Slide the case back over the PC board.
6. Replace the four (4) Phillips head screws removed in step 2 to secure the case in place.