Hall Research HR-4P - Manual (Page 21)

Programmable Serial Controller
19
5. Troubleshooting
There are no field serviceable parts or circuits inside the device. If you
think that the device is malfunctioning (or you have no picture output),
please confirm that the unit contains the proper user programmed
information and that the switch is in the RUN position.
If you are having trouble configuring or communicating with the HR-4P unit, check:
UNIT SEEMS DEAD
Check that the unit is powered with the supplied
power supply and operating normally. With SWITCH in RUN Position the LED
should be on SOLID
With SWITCH in PRG Position the LED
should be BLINKING
GUI WONT RUN
Verify that program installs without errors and the OS
is fully patched and up to date
Verify that the .NET Framework 2.0 minimum has
been installed
COMMUNICATIONS PROBLEMS WITH GUI
Set switch to PRG position when using the GUI The LED should be BLINKING
Ensure RS232 cable used is compatible with the PC
being used This is normally a NULL-MODEM cable with
pins 2 & 3 crossed.
Only Pins 2, 3 and 5 are used for serial
communication
Ensure PC COM port is set correctly on the
COMMUNICATIONS TAB
Ensure that the GUI Command Format matches the
actual units setting Check GUI Setting on TOOLS Menu.
Factory Default is LONG COMMAND
FORMAT
UNIT DOESN’T CONTROL SERIAL DEVICE
Verify unit and Serial Device have proper serial
interconnect cabling Straight Cable or Null-Modem
Verify via PC and HyperTerminal that unit outputs
proper characters at proper baud rate when the
appropriate event occurs.
Verify serial device can be controlled via
HyperTerminal or similar program
Set switch to RUN position when unit is put into service The LED should be on solid