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8. OPENING YOUR TRANSMITTER CASE
WHEN TO CHANGE JUMPERS
Your transmitter case does not need to be opened if jumpers have already been set by your
distributor. Otherwise you will need to open the case and either set jumpers or verify that the
factory default jumpers positions will meet your needs. Jumpers are used for the following:
1)
On the dual channel pulse input signal conditioner board
to set trigger levels, frequency
response, bias resistance, and contact debounce. See Section 9.
2)
On the V-to-F signal conditioner board
to set the analog input signal type (0-10V, 0-1 mA
or 4-20 mA). See Section 10.
3)
On the quadrature signal conditioner board
to set the quadrature input type, input termi-
nation, phase for up-counting, count-by options, and zero index polarity. See Section 11.
4)
On the main board
to set the serial communication signal (RS232 or RS485), termination
resistor for long cable runs, analog output signal (current or voltage), and sensor excita-
tion output (5V, 10V or 24V). Default factory settings are RS232, no termination resistor,
and 10V excitation output. Section 12.
HOW TO OPEN & CLOSE THE CASE
The two clamshell halves of the case are held together with a bolt and a nut at each of the four
corners. Use a Phillips screwdriver to remove the four bolts. The nut will then drop off, and the
clamshell halves will separate. When closing the case, make sure that the ventilation grills are
properly aligned.
Caution:
The nuts at each corner are not captive and are black. Take precautions so
that the nuts do not get lost.