4 FlexPort Audio Input Modules Installation and Operation Guide
Understanding the FlexPort Audio Bus
Each SF-16M FlexPort input supports:
• Two channels of audio
- input can be either stereo or two mono channels (allows two FlexPort transmitters per bus)
• RS-485 data pathway
- provides 2-way communication between the SF-16M and all connected FlexPort modules
• 18V power
- provides power for up to two FlexPort modules on a single bus
FlexPort Override
In addition to the 10 overrides available in the SF-16M, there is an override command for each channel on each FlexPort
bus input (
see table
). Each FlexPort override button sends a discrete override command to the SF-16M that can be
programmed to connect the associated override channel to any output(s).
When used in stereo mode, the Left channel override command connects
both left and right to the assigned output(s). FlexPort input channels can
be selected independent of an override command. FlexPort channels are
numbered 17, 18, 19 and 20 for SF-16M setup.
Figure 1.
Basic FlexPort connection for each bus input. One stereo (or dual mono) source per bus input.
Figure 2
. Link connection for four mono FlexPort transmitters in a system.
Assign each FlexPort transmitter to a different mono channel on each bus run. Both channels can be connected, but only
one of the channels will be transmitted on the FlexPort bus.
Link FlexPort Modules For Two Mono Inputs Per Bus
All FlexPort audio modules feature a FlexPort Bus In and Out, so any two modules may be linked together for a two
source (mono) setup. In linked configurations, it is required to assign one module as “Mono 1” and the other module as
“Mono 2” using the channel assign switches located on the back of the FlexPort transmitters. Stereo FlexPort transmitters
can assign the left or right channel to be active on the bus. When using a linked configuration for stereo sources, combine
the stereo channels into mono before connecting them to a FlexPort transmitter.
FlexPort Bus 1
Ch
FlexPort Bus 2
Ch
Left = Override 1
17
Left = Override 3
19
Right = Override 2
18
Right = Override 4
20
FPM-B
IN
OUT
FPM-D and FPM-U:
These are natively stereo input
modules - Dipswitch setting should be “Stereo”.
FPM-B and FPM-X:
These are natively mono input
modules - If one mono source input is desired on both
FlexPort bus audio channels, the dipswitch setting
should be set to “Dual M” for dual mono.
FPM-D
SF-16M
BUS
IN
BUS
OUT
ASSIGN
CHANNEL
STEREO
MONO 1
MONO 2
INPUT
MIX
OVER-
RIDE
BUS
PWR
FLEXPORT
761-392
MIC
ON
ON
MOMENTARY
TERM. ON
PHANT. OFF
LINE
OFF
OFF
TOGL.
OFF
ON
SWITCH
GAIN
MIN
MAX
BUS
IN
BUS
OUT
ASSIGN
CHANNEL
DUAL M
MONO 1
MONO 2
INPUT
MIX
OVER-
RIDE
BUS
PWR
FLEXPORT
761-392
MIC
ON
ON
MOMENTARY
TERM. ON
PHANT. OFF
LINE
OFF
OFF
TOGL.
OFF
ON
SWITCH
GAIN
MIN
MAX
FPM-U
FPM-D
FPM-B
FPM-U
IN
OUT
IN
OUT
SF-16M
BUS
IN
BUS
OUT
ASSIGN
CHANNEL
DUAL M
MONO 1
MONO 2
INPUT
MIX
OVER-
RIDE
BUS
PWR
FLEXPORT
761-392
MIC
ON
ON
MOMENTARY
TERM. ON
PHANT. OFF
LINE
OFF
OFF
TOGL.
OFF
ON
SWITCH
GAIN
MIN
MAX
BUS
IN
BUS
OUT
ASSIGN
CHANNEL
DUAL M
MONO 1
MONO 2
INPUT
MIX
OVER-
RIDE
BUS
PWR
FLEXPORT
761-392
MIC
ON
ON
MOMENTARY
TERM. ON
PHANT. OFF
LINE
OFF
OFF
TOGL.
OFF
ON
SWITCH
GAIN
MIN
MAX
