13
Getting Started
3.2 MAIN BOARD POWER JUMPERS (Continued)
S2 jumpers are for sensor break indications:
* S2A jumper is not used
* S2B jumper is for positive sensor break (i.e. heating)
* S2C & S2D are not used
S3 jumpers are used for the following (refer to Table 3-1):
* To enable or disable the front panel push-buttons
* To allow for an extremely low resistance load for analog output
* To disable the MENU button
* To perform calibration procedure
Test pins TP1 - TP11 are for testing purposes. Do not use as reading errors may result.
Table 3-1. S3 Jumper Functions
Jumper Description
S3-A Install to enable front panel push-buttons.
Remove to disable all front panel push-buttons
S3-B Removed. Install for meter calibration.
S3-C Normally removed. Install for analog voltage output when load is
less than 1 KW impedance. Care should be taken when installing
this jumper.
S3-D Removed. Not used.
S3-E If installed without S3-B, the MENU button locks out.
If you press the MENU button, the meter shows "LOCK".
3
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