Adtran TRACERT1L7 Manual Do Utilizador
61280.003L1-1B
P
AGE
11
4/12/99
The monitor points provided on the front panel of the system are
listed below
listed below
I ............................ Demodulated received baseband output
Q .......................... Demodulated received baseband output
CLK ..................... Recovered clock for observing EYE pattern
RSSI ..................... DC voltage indicating strength of the received
Q .......................... Demodulated received baseband output
CLK ..................... Recovered clock for observing EYE pattern
RSSI ..................... DC voltage indicating strength of the received
signal at the antenna
+5 ......................... System 5 volts
-5 .......................... System -5 volts
+12 ....................... System +12 volts
-12 ........................ System -12 volts
RF PWR ............... Voltage supplying RF power
GND .................... System ground
-5 .......................... System -5 volts
+12 ....................... System +12 volts
-12 ........................ System -12 volts
RF PWR ............... Voltage supplying RF power
GND .................... System ground
R
ADIO
F
REQUENCY
C
ONVERTER
OR
RFC
The radio frequency converter or RFC (ADTRAN part number
1280.005L1) provides the RF interface between the BBP and the
antenna.
1280.005L1) provides the RF interface between the BBP and the
antenna.
The RFC module is illustrated in the figure below.
R X
TX
IF
RSSI
GND TX-PWR
Figure 1-8. RFC Module
The RFC is partitioned, functionally, into two major components
-- the transmitter and the receiver. It is partitioned physically into
three printed circuit boards.
-- the transmitter and the receiver. It is partitioned physically into
three printed circuit boards.
The major connections illustrated are the transmit signal, receive
signal, and the IF signal connection.
signal, and the IF signal connection.
The three SMA connectors located on the RFC module provide
the transmitted RF, received RF, and IF connection points. Two
test points are provided for monitoring the received signal strength
indicator or RSSI. The voltage (relative to the GND test point)
present on this test point represents the level of the received signal.
the transmitted RF, received RF, and IF connection points. Two
test points are provided for monitoring the received signal strength
indicator or RSSI. The voltage (relative to the GND test point)
present on this test point represents the level of the received signal.
T
RACER
D
ESCRIPTION