Hall Research HR-16P - Manual (Page 7)

16-Channel Programmable Serial Device
5
4.0 Operation
The HR-16P is designed to send a string of commands to a serial device
(e.g. a projector) via the serial interface, when the discrete input
transitions from one state to another.
Figure 2 – Input circuit for each of the 16 Discrete inputs
Hi input = Open or Voltage above 1v
Lo input = Short to ground or Voltage below 0.3v
*** Input Voltage Range = 0v to +30 v ***
4.1 Mode Switch
In the Run position, the HR-16P will communicate with the serial device
using an appropriate cable (target cable not included).
In the Program position, the user can upload strings to the HR-16P. This
will consist of the Rising edge and the Falling edge strings.
These strings are limited to 250 characters in length each. The strings are
constructed using the HR-16P Programmer Windows™ software available
from our website.
The user will then be able to upload the file to the HR-16
4.2 Front Panel Status Indicator
The front panel has a convenient LED that is used to indicate power on
state (steady on) or blinking (when commands are being sent to target)
Figure 3 – Model HR-16P Front and Rear