Lectrosonics IFBT5 - Manual (Page 8)

MODE SWITCHES AND GROUND LIFT JUMPER
MODE Switches
The MODE switches allow the T5 to accommodate a variety of input sources by changing the input sensitivity and
the pin functions of the input XLR jack. Marked on the rear panel are the most common settings. Each setting is
detailed below. Switches 1 and 2 adjust the XLR pin functions while switches 3 and 4 adjust the input sensitivity.
Name
Switch
Positions
1 2 3 4 XLR Pins Balanced?
* Input
Sensitivity
CC 3 = Audio
1 = Common
No -6 dBu
MIC 2 = Hi
3 = Lo
1 = Common
Yes -40 dBu
LINE 2 = Hi
3 = Lo
1 = Common
Yes +4 dBu
RTS1 2 = Hi
1 = Common
No +4 dBu
RTS2 3 = Hi
1 = Common
No +4 dBu
* Approximate sensitivity with the "AUDIO LEVEL" control at mid-position and 1kHz signal.
GROUND LIFT JUMPER
The T5 transmitter is shipped with pin 1 of the XLR input connector tied directly to ground. If a floating input is
desired, a ground lift jumper is provided. This jumper is located inside the unit on the PC board near the rear panel
XLR jack. Place the jumper in the desired position as shown in the figure below.
Ground Lift
Jumper BNC
Connector
DIP
Switches
17239X3
GND LIFT
Gnd Position
Lift Position
XLR
Connector
Location of Ground Lift Jumper
8