PTC Model III, Rotary Selector Installation Instructions and User Manual, Rev 8/03 - Page 6
2e. When you have lined up the bridge to the lead track, turn the
Track Selector switch to it's correct
position to indicate the
lead track. The status indicator will flash green to indicate it
has acknowledged the track selection. Note: If you initially
select the wrong track, the rotary switch can be repositioned
during the period the LED is flashing green.
2f. After about 5 seconds, the Status Indicator will flash red to
indicate it has confirmed the selection and is in the process
of programming it into memory.
3. Program the location of the next track. After the Status
Indicator stops flashing red, it will go back to a solid
yellow. This is to tell you that it is ready to learn the
location of the next track, rotating clockwise. To do this,
repeat the same basic steps:
3a. Press and release the Start/Stop button on the control panel,
to start the bridge turning slowly again.
3b. When the bridge gets within a few degrees of the next track,
press the Start/Stop button to stop the bridge.
3c. Tap Start/Stop button until the bridge lines up with the next
track.
3d. Press and hold the Start/Stop button for 3 seconds to back up
the bridge, if you overshoot the spot you want.
3e. When you have lined up the bridge to the next track, turn the
Track Selector switch to it's correct position for selecting
that track.
3f. The Status Indicator will again flash green, then red. This is
your indication that the controller has learned the next
track's location.
4. Program the rest of the track locations.
Repeat Step 3 to program Tracks "3" through "12".
5. Program the tail end positions.
Although most bridges are identical at both ends, most are
not-- the tracks do not line up exactly through the center of
the turntable, and are sometimes offset. In addition, most
turntables have concentricity errors that must be
compensated for. This is achieved by repeating
programming steps 2 through 4 while teaching the PTC
where the correct locations are for positioning the tail end of
the bridge. In this way, the PTC treats the head and tail end
of the bridge locations "separately" and their respective
concentricity and offset errors are accounted for
automatically. Begin by teaching the controller the correct
position for the aligning the tail end of the bridge with the
lead track programmed in Step 1:
5a. Flip the Head/Tail switch to the "tail" position. The Status
Indicator will not change. Leave the rotary track selector
switch in it's current position, whatever that might be.
5a. Press and release the Start/Stop button on the control panel,
to start the bridge turning slowly again.
5b. When the tail end of the bridge gets within a few degrees of
the reference (lead) track, press the Start/Stop button to stop
the bridge.
5c. Tap Start/Stop button until the bridge lines up with the lead
track.
5d. Press and hold the Start/Stop button for 3 seconds to back up
the bridge, if you overshoot the lead track.
5e. When you have lined up the tail end of the bridge to the lead
track, turn the Track Selector switch to it's correct position
for selecting that track.
5f. The Status Indicator will again flash green, then red. This is
your indication that the controller has learned the lead
track's location.
Repeat these steps to program the rest of the tail end bridge
locations.
6. Prepare the controller for normal operation.
After the bridge tail locations have been programmed,
configure the controller for normal use:
6a. Turn off the power.
6b. Set Configuration Switch #8, the Run/Learn switch, to
"RUN".
6c. Re-index the bridge to bring the head end of the bridge back
to the lead track location: As in Step 1, hold down the
Run/Stop switch while turning on the power. Release the
Run/Stop switch, and the bridge should begin turning. When
the head end of the bridge approaches the lead track, single
step it into proper position.
Important! Be sure the Run/Learn switch is set to "Run"
prior to turning on the power! When the controller is
powered-up in the "Learn" mode, the controller erases any
previously programmed locations in preparation for new
locations.
6d. When the bridge is re-indexed, turn off the power.
6e. Reposition rotary switch to lead track position and position
Head/Tail switch to the "head" position.
Your controller is now fully programmed and ready to go! Refer
to "Operating the PTC" for instructions on using your newly
programmed turntable controller.
Programming hints. Follow these simple guidelines to assure
proper programming of the PTC controller:
• Program all locations you are using in one programming
session.
• If you think you have made a mistake during programming
or want to start over, just turn the power off and then on
again to reset the controller. This will erase any settings you
have made while in "LEARN" mode. Important:
When
turning off the power, wait at least 5 full seconds before
turning it back on.
• Since most bridges are identical at both ends, be sure you
can identify which end of the bridge is the head end so you
can re-index the table later on, if necessary. Use the Index
Mode described in the "System Check Out Section" to re-
orient the head end of the bridge to the lead track. ◆Tip:
Mark your bridge's head end with a water barrel or other
object to make the head end easy to identify from a distance.
• If you have fewer tracks than the number of positions
available on the rotary Track Selector switch, you can "skip"
