Specifications

SYNC I/O Guide46
5 Repeat until you have finished setting
SYNC I/O to the desired generator start time.
6 Press Set.
The LED Time Code Display stops flashing, and
displays the start time.
To set the Bi-Phase/Tach start frame using
SYNC I/O Setup software utility (Windows only):
1 In the Generator/Bi-Phase Preset section, type
in the time code value of the starting frame, in
hours:minutes:seconds:frames.
2 Click Set.
Bi-Phase/Tach Signal
To define the direction for a Bi-Phase/Tach input
signal using the front panel controls:
1 Press Set, and use the Up or Down switches to
display Bi-Phase/Tach Input Signal (bIPH 5I6).
2 Press Set. The LED Time Code Display shows
one of the four parameter values:
A LEAd b Bi-Phase: FWD = A leads B: when the A
square wave is ahead of the B square wave, the
direction of the Bi-Phase signal is understood to
be “Forward.”
b LEAd A Bi-Phase: FWD = B leads A: when the B
square wave is ahead of the A square wave, the
direction of the Bi-Phase signal is understood to
be “Forward.”
r–n–d LO Tach: FWD = B is Low: when the B sig-
nal is in a “low” state, the rate and direction
(“r–n–d”) of the Tach signal is understood to be
“Forward.”
r–n–d HI Tach: FWD = B is High: When the B sig-
nal is in a “high” state, the rate and direction
(“r–n–d”) of the Tach signal is understood to be
“Forward.”
3 Use the Down and Up switches to scroll be-
tween the parameter values.
4 Press Set.
Bi-Phase/Tach Pulses-per-frame (PPF)
There are several different standards for the
number of pulses-per-frame output by Bi-Phase
or Tach devices. Using the SYNC I/O Setup soft-
ware utility’s Pulse Per Frame setting (Windows
only), you can set SYNC I/O to operate from 2 to
254 pulses per frame. The setting should match
the PPF rate of the external device’s Bi-
Phase/Tach encoder.
To set the pulses per frame value for a Bi-
Phase/Tach signal using the front panel:
1 Press Set, and use the Up or Down switches to
display Bi-Phase/Tach Pulses Per Frame (bIPH
PPF):
2 Press Set. The LED Time Code Display will
switch to display the current PPF value.
3 Use the Down and Up switches to scroll
through the parameter values (from 2 to 255
pulses per frame). Holding either switch will
scroll at a faster speed.
4 Press Set.
Bi-Phase Position Trimming
While using bi-phase as your positional refer-
ence, you can trim the Bi-Phase-to-time code
translation at any time. Each press of the Up
switch will advance the time address one frame.
Each press of the Down switch will retard the
time address by one frame. Remember how
many presses you've accumulated so that you
can go back and trim the starting address you
previously programmed.