Spectrum Controls InView Series User Manual page 39

There is an impedance of 120 ohms built into each AIC and AIC+ as required by
the RS-485 specification. Jumper terminals 5 and 6 of the AIC or AIC+ for end-
of-line termination.
End-of-line InView display should have a terminating resistor in RJ11
NOTE
(P1). If a 2706-P22-SC display is the end-of-line display, jumper terminals
5 and 6. There is a built-in impedance of 120 ohms similar to that of the
AIC and AIC+.
Chapter 1: Installing InView Message Display
User's Manual 0300277-02 Rev. D
1-31