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1)
To set the A Channel value:
a)
When the display flashes input setup, press . The display will change to a chan.
b)
Press again to proceed to the choice list. Scroll through up, down, quad, and r quad
using the arrow keys.
c)
When the selection is complete, press to accept the selection to counter memory and
proceed to the next parameter, Chan B Mode.
The B channel may be set as Up, Down or Direction. In the direction mode, the B channel is
no longer a count source, but controls the count direction of the A channel input. This state
control works as an ‘exclusive-or’ with the channel A direction. Thus, if B input is in the
‘Down’ state and A channel is set to Down, pulses at the A input will increment count.
Table 7. Count Behavior with B Channel Set as Direction Control
A Channel Setting
State at B Input
Resulting Count
UP
UP
UP
UP
DOWN
DOWN
DOWN
UP
DOWN
DOWN
DOWN
UP
When A channel has been set to either Quadrature or Reverse Quadrature settings, the B chan-
nel internally behaves as a direction control.
2)
To set the B channel:
a)
In the Input Setup area, after entering the A Chan value, the display will flash be-
tween b chan and the counter’s default (dir).
b)
When the display shows dir, press .
c)
Use the arrow keys to change the value, then press
to accept the selection and
proceed to the next menu category, Count Setup.
NOTE: The B channel will not show in the menu when Quadrature or Reverse Quadra-
ture has been selected for the A Channel input.
4.3 Scaling and Decimal Point Position (Count Setup)
Prescale
The S663 counter allows for prescaling of display values. Prescaling allows the counter to dis-
play a more accurate number than its 6-digit capacity might otherwise allow.
Generally speaking, the smaller the scale value, the more accurate the count will be. The S663
has four prescale values, 1.0 (default), 0.1, 0.01, and 0.001.
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