User Manual

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Speed Monitor IFTA T8846

Issue 2 Apr 10 PD-T8846 15

3.3. Speed Inputs

This section details the speed input terminal connections. These terminals are used to interface to the

field sensor input cables.

Refer to Figure 3 for the location of the interface terminals.

Interface Terminal Description

SK7 A1 Group 1 Channel 1 Fused VField Output

SK7 A2 Group 1 Channel 1 Open Collector Input

SK7 A3 Group 1 0V (Ground)

SK7 B1 Group 1 Channel 1 Open Collector Loopback

SK7 B2 Group 1 Channel 1 Passive A Input (A duplicate input is also available on SK7

terminal 7)

SK7 B3 Chassis Ground

SK7 C1 Group 1 Channel 1 Passive A Input (A duplicate of SK7 terminal 5)

SK7 C2 Group 1 Channel 1 Passive B Input

SK7 C3 Group 1 Channel 1 Active Bias Output

SK8 A1 Group 1 Channel 2 Fused Vfield Output

SK8 A2 Group 1 Channel 2 Open Collector Input

SK8 A3 Group 1 0V (Ground)

SK8 B1 Group 1 Channel 2 Open Collector Loopback

SK8 B2 Group 1 Channel 2 Passive A Input (A duplicate input is also available on SK8

terminal 7)

SK8 B3 Chassis Ground

SK8 C1 Group 1 Channel 2 Passive A Input (A duplicate of SK8 terminal 5)

SK8 C2 Group 1 Channel 2 Passive B Input

SK8 C3 Group 1 Channel 2 Active Input Bias

SK9 A1 Group 1 Channel 3 Fused Vfield Output

SK9 A2 Group 1 Channel 3 Open Collector Input

SK9 A3 Group 1 0V (Ground)

SK9 B1 Group 1 Channel 3 Open Collector Loopback

SK9 B2 Group 1 Channel 3 Passive A Input (A duplicate input is also available on SK9

terminal 7)

SK9 B3 Chassis Ground

SK9 C1 Group 1 Channel 3 Passive A Input (A duplicate of SK9 terminal 5)

SK9 C2 Group 1 Channel 3 Passive B Input

SK9 C3 Group 1 Channel 3 Active Input Bias

SK10 A1 Group 2 Channel 1 Fused Vfield Output

SK10 A2 Group 2 Channel 1 Open Collector Input

SK10 A3 Group 2 0V (Ground)

SK10 B1 Group 2 Channel 1 Open Collector Loopback