User's Manual

User Guide | FreeSpeak II™
Page 35
Warning: Previous versions of this manual described a cable which would allow access
to channel 1 of a dual channel RTS beltpack. DO NOT attempt to use a cable
like this as it could result in damage to the FS II Base station.
4.2.4 Front-panel adjustments for partyline connections
To connect the partyline channels to FS II and make the communication available
to the rest of the system, press the CH-A and/or CH-B enable switches. The LED
will light, and the connection is made. To disconnect the partyline connections,
press these switches again. The switch may be “locked” in the SYSTEM menu so
that the partylines may not be disconnected.
Because partyline intercom does not have global level control on a channel, input
and output level controls are provided via the front panel programming. Scroll to
PORTS on the main display screen and press the rotary encoder to select. Scroll
to PLCHA or PLCHB and press to select. Select LEVELS, then select the input or
output level. This notation is relative to the Base station–input level refers to the
level at which everyone else hears the partyline, and output level refers to the
level at which the users on the partyline channel hear everyone else. Use the
rotary encoder to adjust the numerical level—clockwise to increase the level and
counter-clockwise to decrease the level.
Make the estimated changes in level and press the rotary encoder to save the
changes. Test the levels between the partyline and FS II beltpack, and make
additional changes as needed. When the levels are set as desired, press to select
and the display will go to the previous INPUT/OUTPUT screen. When both are
adjusted, select BACK on each screen until the main screen is displayed.
Users connected to the Base station can be forced to listen to the activity on the
partyline by initiating a “call”.
For more information on programming the Base station, see the chapter
“Programming a System from the Base station”.
4.2.5 Troubleshooting partyline connections
4.2.5.1 Reducing FS II beltpack echo when talking to a analogue
partyline
If the Base station and beltpack are not set up correctly the FS II user will
experience an echo when talking to a partyline (either directly or via a group or a
wireless partyline). The echo is caused by either local audio coupling in the
headset due to the microphone gain being set too high or audio reflections from
the partyline that can be minimized by setting a VOX gate on the partyline and
the partyline being auto nulled. An FS II system has a built-in microphone gain
control, but a VOX gate level can also be set in the configuration editor (see next
section).