ADC NXD 1.10 Multiplexer System

ADCP-75-210 • Issue 1 • March 2007

Table 14. PAA Connection Points and Indicators

REF #	DESIGNATION	DEVICE	FUNCTIONAL DESCRIPTION
1	DC_IN	Green LED	DC In. Lighted when PIC has -48 VDC input

2	PA_FAULT	Red LED	PA Fault. Lighted when PA has failed

3	DC_OUT	Green LED	DC Out. Lighted when PIC has +28 VDC output

4	I2C	RJ-45 connector	I2C (Bus). Connection to RUC module P/A CNTRL using
		(J1)	cable 1001475P001

5	48V PWR	Positronic 3-pin	48 Volt DC Power. Input to PIC for -48 VDC using PIC
		connector (J2)	power harness 1001471P001

6	RF OUT	SMA connector	RF Out. Output of PA for cable 1955000P080 to one of the
			four plexers (depending on band), connector port TX

7	(Unmarked)	Power Amplifier	Power amplifier (see description on preceding page)

8	RF IN	SMA connector	RF In. Input from RUC for cable 19559999P079

1.10 Multiplexer System

The NXD RAN multiplexer system consists of four units that interface to the antenna, PAs, and multicouplers:

•Quadplexer Primary (PCS Bands A, B, F), interfaces to PCS primary antenna;

•Quadplexer Diversity (PCS Bands D, E, C), interfaces to PCS diversity antenna;

•Triplexer Primary, either of two types:

–Type one (Cellular Band B, SMR800 Band), interfaces to 800 MHz primary antenna;

–Type two (SMR800 Band, SMR900 Band), interfaces to 800 MHz primary antenna;

•Diplexer Diversity (Cellular Band A), interfaces to 800 MHz diversity antenna.

For a schematic of the PCS multiplexers, see Figure 21. For a schematic of the Cellular/SMR multiplexers, see Figure 22 (showing Cellular B, SMR800 triplexer) or Figure 23 (showing SMR800, SMR900 triplexer).

Page 26