ADTRAN 2 x E1 user manual Built-In Tests, Radio Frequency Converter or RFC

61280004L2-1C

Section 1 TRACER Description

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 1-8is a block diagram of the RFC. The major connections
illustrated are transmit signal, receive signal, and the IF signal connection.
	RX					SAW	333	LPF		Splitter
					53244					AGC
		20518
				or
	TX										IF
			PA						Splitter
								AGC
					223821	or56807

Figure 1-8. RFC Block Diagram

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.
		IF
RSSI	GND	TX PWR
	RX	TX

Figure 1-9. RFC Module

8 TRACER 2 x E1 User’s Manual