SERIES 8159 SIGNAL CONDITIONER MANUAL
4
3.0
WIRING
Reference Figures 4 and 5 for TRANSDUCER and INPUT/OUTPUT (I/O) wiring information.
Power is applied with a 3-prong AC power cord. The instrument is protected by a 250V, 250mA
fast acting 5mm fuse. The fuse holder is an integral part of the input power connector. A spare
fuse is provided in the fuse holder. Internal solder jumpers are provided to allow 115VAC or
230VAC operation (Reference Figure 8).
Warning: Remove AC power to the 8159 meter before changing the fuse.
The cable shield must connect directly to an RFI/EMI rated connector hood instead of pin
9. The shield must make a 360 degree bond to the connector hood at the cable entry.
Figure 4 - Transducer Wiring
It is recommended that the sense leads be used with cable lengths longer than 20 feet. The
excitation voltage is then sensed and regulated at the transducer for optimum shunt calibration.
Consult factory for cable lengths over 100 feet.
Warning: Remove AC power to the 8159 meter before removing any enclosure panels or
making any internal adjustments or changes.
To enable or disable the sense lead setting, perform the following:
1.
Open the back panel of the meter case by removing the four (4) screws located in the
corners of the panel face.
2.
Expose the connector circuit board located on the back of the back panel.
NOTE: For newer units, the boards use R2 and R3 instead of JP2 and JP3.
3.
Remove the solder jumpers from JP2 and JP3 to ENABLE sense lead setting.
4.
Solder the JP2 and JP3 jumpers to DISABLE the sense lead setting.
5.
Close the back panel of the meter case by fastening the panel face at each corner with the
four (4) screws.
9
Chassis Gnd
Cable Shield
