Antenna Tuning Board Connectors And Jumpers - Texas Instruments 2000 Series Reference Manual

High Performance RA-RFM RI-RFM-008B

1.6 Antenna Tuning Board Connectors and Jumpers

A circuit diagram of the Antenna Tuning Board is shown in Figure 6. Tables 5
through 8 show connector and jumper signals. LED1, visible on the module,
indicates the presence of power.
Table 5: Antenna Connection
Pin# Signal Direction
1
2
3
Table 6: Antenna Cable Connector
Pin# Signal Direction
1
2
3
Table 7: Tuning Capacitor Jumpers
Capacitance (nF) Max. Resonance Voltage
JP1 33
JP2 16.5
JP3 33
JP4 33
JP5 16.5
JP7 15
JP8 7.5
JP9 15
JP10 10
JP11 5
Note:
VRF_max is the maximum allowed resonance voltage for the
respective capacitor combination.
Table 8: J13 Earth Ground Antenna Tuning Board
Note:
The pre-drilled mounting holes
ANT IN/OUT Symmetric antenna signal
Not connected
ANT IN/OUT Symmetric antenna signal via series L
ANT IN/OUT Symmetric antenna signal from/to RFM
ANT IN/OUT Symmetric antenna signal from/to RFM
GND IN Cable shield to housing ground
peak-peak (VRF_max)
560
800
560
560
800
560
800
560
560
800
Pin# Signal Direction
1 Earth
2 GND
18
February 2002
Description
Description
Description
Capacitor C2
Capacitor C1, C2 in series
Capacitor C1
Capacitor C4
Capacitor C3, C4 in series
Capacitor C6
Capacitor C5, C6 in series
CapacitorC5
Capacitor C8
Capacitor C7, C8 in series
Description
OUT Housing ground
IN Shield Twin Ax Cable
are connectable to ground.