MTS Series LX Laser Extensometer - Manual (Page 33)

Electrical Connections
LX Laser Extensometer Installation 33
Electrical Connections
The Series LX Laser Extensometers are connected to line voltage power using
the grounded cord provided.
The Analog Output signal, the Remote Laser Disable signal, and the Serial I/
O Port connections are made via the modular jacks located on the control panel
of the instrument. Note these jacks have 6 pins but only 4 pins are used. A
standard RJII 4-pin telephone type Modular Plug will mate with them and
automatically make contact only with the 4 active pins (pins 2, 3, 4, and 5).
For EMC compliance, when installing the LX 500 and LX 1500 Laser
Extensometers all cable connections must use shielded cables (this includes the
RJ11 modular plug connections and the AC Line Cord connections to the Laser
Extensometer). The shield must be tied to earth ground. The case of the Laser
Extensometer is also earth-grounded.
Note No external cables are to be connected to the BNC connector on the
Laser Extensometer because this is only a “test” connector and is not
normally used.
Modular Jack Pin Identification
Face the controls side of the laser extensometer. The notch in the jack is on the
left and the pins are numbered vertically, in sequential fashion, from 1 to 6 with
pin number 1 at the top.
Both the analog output signal and the remote laser disable signal connections are
located on the Analog Output jack. The Analog Output modular jack uses only
4 pins:
• pin 1 no connection
• pin 2 analog output (-) (gnd)
• pin 3 remote laser disable (-)
• pin 4 analog output (+)
• pin 5 remote laser disable (+)
• pin 6 no connection