FLEX-6000 Signature Series – FLEX-6000 Hardware Reference Manual
Page 25 of 48
Copyright 2016 FlexRadio Systems. All Rights Reserved.
7.4 ACCESSORY CONNECTOR
The accessory connector is a high-density HD-15 female connector. (This is the same
connector used by VGA monitors.) There are a number of inputs and outputs on this
connector.
I - The orientation shown above is for the FLEX-6500 and FLEX-6700 only. The FLEX-6300
is oriented upside down from what is shown above
Δ – All Accessory inputs are 3.3VDC MAX Input
7.4.1 Pin 1: Line In
This audio line input can be used to feed consumer level (-10dBV) audio into the
transmitter. Refer to the SmartSDR documentation for information describing how to
enable this input, and what configurations are available.
7.4.2 Pin 2: Line1 Out
This audio line output is a buffered output of the POWERED SPEAKERS left channel.
7.4.3 Pin 3: Line2 Out
This audio line output is a buffered output of the POWERED SPEAKERS right channel.
7.4.4 Pin 4: KEY/FSK/INT In
This input is a keying input for either CW or FSK. Refer to the SmartSDR documentation for
information describing how to enable this input, and what configurations are available. Pin
4 is keyed to GROUND.
7.4.5 Pin 5, Reserved for future use (FLEX-6300 only)
On the FLEX-6300, pin 5 is not enabled and is reserved for future use.
7.4.6 Pin 5, Pin 6, Pin 7, Pin 8 and Pin 10: GROUND
These pins are all connected to chassis ground o the FLEX-6700 and FLEX-6500. Pin 5 is not
a chassis ground for the FLEX-6300 (see above)
Rear Panel View: FLEX-6500 & FLEX-6700
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