ADTRAN Tracer 2 x E1 - Manual (Page 18)

TRACER 2 x E1 User’s Manual
61280004L2-1C
Section 1 TRACER Description
8
Built-In Tests
The TRACER has several features to aid in site setup and later debugging. These diagnostics include E1
loopbacks and a link test with BERT (Bit Error Rate Test) data. A link test is performed by pressing the
test button. The remote unit will then send a pseudorandom data pattern, and the local end will compute a
BER. After the conclusion of the test, the remote end will automatically be instructed to terminate the
pattern generation. If any bit errors are introduced, the Remote Test Fail LED will illuminate.
Radio Frequency Converter or RFC
The radio frequency converter (RFC) provides the radio frequency (RF) interface between the baseband
processor and the antenna. The RFC is partitioned, functionally, into two major components - the
transmitter and the receiver. Figure 1-8 is a block diagram of the RFC. The major connections
illustrated are transmit signal, receive signal, and the IF signal connection.
The RFC unit is enclosed in a metal enclosure approximately 26.7cm x 14cm x 2.5cm and is mounted in
a 515 mm rackmountable housing or mastmountable, weatherproof enclosure. The RFC is illustrated in
Figure 1-9.
Figure 1-9. RFC Module
RX
RSSI GND TX PWR
TX
IF
Figure 1-8. RFC Block Diagram
2018 5344
2058 5324
SAW
333
AGC
Splitter
Splitter
AGC
PA
LPF
IF
RX
TX
2321 5607
2281 5687
or
or