Hall Research HR-3P - Manual (Page 4)

Projector Controller w/ Built-n VGA Splitter
4
Setup to Use HR-3P
1. Connect the provided power supply to the power port on the back right side of
the device.
2. Attach any VGA, Composite, and/or S-Video signals as necessary to the
appropriate input jacks on the back of the device.
3. Connect the output from the video signals to appropriate video display devices.
4. Connect the discrete inputs to an appropriate switch. Connect the discrete output
to a relay. These discrete inputs/outputs are not required for the HR-3P to have
some functionality, but usually you will want to use at least one of them. These
discrete input and output are intended to operate using the power from the HR-
3P. Do not supply any power to the discrete input/outputs. You simply need to
open or close the circuit between a discrete and the ground connection provided
on the discrete input/output terminal.
5. Connect the HR-3P to the projector via a crossover serial cable or a straight
through serial cable depending on the projectors pinout.
Operation
The HR-3P is designed to send a string of commands that you create to a projector or
other device via a serial interface anytime 1 of 7 events occurs. The following is a list of
each event and the conditions necessary to facilitate each event:
1. When any video is first detected, the discrete output will be pulled low and the
Video First Detected string will be sent out the serial port.
2. When Discrete Input transitions from a high to a low signal, the HR-3P will send
the Discrete OFF string out the serial port.
3. When Discrete Input transitions from a low to a high signal, the HR-3P will send
the Discrete ON string out the serial port.
4. When the VGA video input is selected, the HR-3P will send the VGA Input Active
string out the serial port.
5. When the Composite video input is selected, the HR-3P will send the Composite
Input Active string out the serial port.
6. When the S-Video input is selected, the HR-3P will send the S-Video Input Active
string out the serial port.
7. When no video inputs are active, the HR-3P will send the No Input Active string
out the serial port and set the discrete output high.
Each of these 7 strings can have a maximum of 30 characters and minimum of 0
characters. Within each string wait times can be inserted. Each wait can be a maximum
wait time of 16 hrs, 59 min, 59 sec. Each wait takes 3 characters so a maximum of 8 waits
is possible per string. (3 characters x 8 waits = 24 characters) Non-printing control
characters may also be inserted into the strings. The following is a list of the possible
control characters and their corresponding hexadecimal values.