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Cable Connections & Jumper Configurations
RJ-45 Connector
Audio In - Pin 1 & 2 (600 Ohm Balanced)
Audio Out - Pin 3 & 6 (600 Ohm Balanced)
Ground - Pin 8
Reserved - Pins 4,5,7 (leave open)
Note: These connections are the same as
Ethernet 10BaseT; off-the-shelf
Cat 5 cables may be used.
DSP Module Jumper Configuration (JH1)
Mode*
Jumper
3 2
1
Tone Reduction
Off Off
Off
Noise Reduction
Off Off
On
Bandpass Only
Off On
Off
Reserved
Off On
On
Reserved
On Off
Off
Ground/Ground tones - Narrow BW
On Off
On
Ground/Ground tones - Wide BW
On On
Off
Bypass
On On
On
Notes:
* 300-3400 Hz Bandpass in all Modes
except Bypass
WARNING:
DO NOT USE TONE REDUCTION FOR GUARD
FREQUENCIES 121.5 MHz AND 243.0 MHz. YOU MUST USE
BANDPASS MODE ONLY FOR THESE FREQUENCIES.
