Laurel Electronics LTM CTR SERIES PULSE, AC or PROCESS TOTALIZER INPUT, SERIAL DATA OUTPUT - Manual (Page 22)

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11. QUADRATURE SIGNAL CONDITIONER BOARD
This signal conditioner can be used for quadrature position (Basic or Extended main board) or
for quadrature position and rate (Extended main board). Two quadrature signals, which are 90º
out of phase, are applied to the Channel A and B inputs. Their phase relationship determines
whether the count is clockwise (+) or counterclockwise (-). A zero index signal may be applied
to a Z Channel as a position reference.
JUMPER SETTINGS
Input Type E2 E4 E6 E5
Single-ended (signal & return)
Differential
Differential (with excitation and no zero index) a, c
b
b
a, c
b
b
a, c
b
-
c
c
b, d
Input Termination (for differential inputs only) E1 E2 E3
For long cable runs
For short cable runs a
none
a
none
a
none