Pacific Research Solutions RI-1 - Manual (Page 23)

Pacific Research Solutions RI-1 and PE-1 User Manual
Page 17
SELECTING NSQ, TSQ and PTT SIGNAL POLARITY
The polarity of the NSQ, TSQ and PTT signals are selectable. If
you do not have the programming software to make this
adjustment, you can still send DTMF commands to the
controller, but you will have to wait for the inter-digit timeout to
expire for the command to execute. To adjust these signal
polarity, unlock the controller with the default password
“123456”. You may not hear an acknowledgment because we
have not adjusted the transmitter lever at this point. Next send
System Command 000x, 001x and 002x to change the polarity of
these signals. See section 11 for more details on this System
Command. You must finish with System Command 691 to lock
and save your changes.
You can also use the programming software (PS-3) to adjust
these values. Click “System” and “System Setup”. See the
group under “Input Signal Polarity” in the figure to the right.
After you have made your changes, click the “Send” button to
update the controller.
SELECTING RECEIVER EMPHAISIS TYPE
If you are interfacing directly to the receiver’s demodulator, you will want to disable the controller’s receiver emphasis stage.
For all other types of audios interface, including VoIP, you will want to enable the controller’s emphasis stage. This is done
with System Command 003x. Use System Command 0030 (Factory Default) to disable the emphasis stage or use System
Command 0031 to enable the controller’s emphasis stage. You can send this command over the AIR with DTMF or you can
use the programming software (PS-3). If sending the command to the controller with DTMF, do not forget to unlock and
lock/save your data. If using the programming software, click “System” and “System Setup”. See the group under “Audio
Response” in the figure to the right.
SELECTING LOW PASS FILTER
A selectable low pass filter is provided to allow for interface with various types of modulation standards. This filter is used to
prevent adjacent channel splatter. If you are operating on 20KHz or more channel spacing, we recommend you use the 3500Hz
cutoff selection. If you are operating on 15KHz or less channel spacing, we recommend that you use the 2500Hz cutoff
selection.
You can adjust this filter over the air using S-Command 03 or the programming software (PS-3) Click System and System
Setup. See the group under “Audio Response” in the figure to the right.
FINAL ADJUSTMENT OF RECEIVER GAIN
Fine adjustments to the receiver gain can be made from over the air using S-Command 02 or the programming software (PS-3)
Click System and System Setup. See the group under “Receiver Gain” in the figure to the right.
SELECTING TRANSMITTER EMPHAISIS TYPE
If you are interfacing directly to a true FM type modulator, you
will want to disable the controller’s transmitter emphasis stage.
This is accomplished with a jumper (JP-4) on the circuit board.
See the figure to the right. Pin 3 is located in the lower corner of
the board. For modulators that are true FM and without
emphasis, place jumper on pins 2 and 3. For all other types of
modulators and audio interfaces, including VoIP, you will want
to place the jumper on pins 1 and 2.