User's Manual

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This manual is divided into four sections. The first is a description of the system hardware. The
second describes radio interference suppression methods. The third lists system specifications.
The fourth covers the recommended operating and maintenance procedure.
1.0 HARDWARE DESCRIPTION.
The model XMTR12C high-speed 144-shot controller is a low power hand-held remote
control transmitter which can transmit commands over any of twelve different digital
channels.
The transmitter can be configured to be fixed or multi-channel multi-shot, and any fixed
channel setting or multi-channel range can be set from the keypad by pressing a special
code on the keys during the LED scan period immediately after power-up. Once set, this
configuration is saved in non-volatile memory even when power is off. The configuration
is defined by 3 parameters: “Base Channel”, “High Channel”, and “Low Channel”. Each
of these can be assigned the value 1 through 12 by pressing the appropriate key.
“Base Channel” is the channel on which the transmitter starts after power-on. “High
Channel” is the last channel the transmitter uses before cycling back to “Low Channel”
after firing cue 12 of the high channel. So if you want to configure a transmitter to be
fixed channel 3, for example, you would key in 3,3,3 after entering the special code. If
you wanted it to be a 72-shot unit operating on channels 1 through 6, you would key in
1,6,1. You can do much more elaborate configurations, too, such as making it an 84-
shot unit operating on channels 3 through 9 and starting on base channel 5 by keying in
5,9,3. The special code consists of pressing the 5 and 11 keys simultaneously. This
cannot occur accidentally, because it is very difficult to press these keys simultaneously
with one hand, and because this code is only sensed during the initial LED scan after
power-up
Operation can be switched on-the-fly to a different channel (within the configured range)
by pressing the Pwr / Rst button, followed by the number of the desired new channel.
On-the-fly channel changes are not saved in non-volatile memory. So operation will
revert to normal after power cycling the transmitter or after firing past cue 12.
Transmitters operating on separate digital channel numbers can transmit simultaneously
without interfering with each other. This permits up to twelve different receivers or
groups of receivers to be controlled by separate transmitters simultaneously. A
transmitter will only actuate receivers whose digital channel switches are set to the
same channel as the transmitter. Thus, multiple transmitters may be used to actuate
different selected receivers even though all operate on the same frequency.
Transmitters operating on the same digital channel number should not be used
simultaneously, as they will interfere with each other and possibly result in failure-to-fire.
This transmitter features an enhanced display mode which provides the following
indications:
Current cue number (to be fired next).
Current channel number (in single-shot mode).
Battery “fuel-gauge”.
Current firing mode (Safe, Single-shot, or Auto-fire).
Automatic firing rate (in Auto-fire mode).
Base-channel, High-channel, Low-channel configuration (at power-on).