Harris Maxiva ULX - Page 198

5-10 888-2629-200 10/6/10
WARNING: Disconnect primary power prior to servicing.
Section 5 Maintenance and Alignments
Maxiva ULX COFDM Series
Figure 5-4 gives the power supply and pallet identification numbers.The test connector
on the front of the PA module can be used to determine which pallet or power supply
has failed. An optional hand held meter can be attached to the connector to display the
status and fault information outlined in Table 5-2. If the optional meter is not available a
multimeter can be used to measure voltages on the connector pins. The normal
measured voltages are given in the following table in parenthesis. These voltage values
assume that the module is enabled but no RF input is applied.
Table 5-2 PA Module Test ConnectorPin Out and Typical Voltages
Pin Signal Pin Signal Pin Signal Pin
Signal
1 /ON-OFF STATUS (0V -
4.9V)
2 PS8 VOLTAGE
(3.8V)
27 P3 FET 1 CURRENT
(.3V)
28 GND
3 PS VOLT SEL-TB
(44=5.15V, 46=4.12V,
48=2.49V, 50= .87V)
4 GND 29 P3 FET 2 CURRENT
(.3V)
30 CANH (3.2V)
5 AVG INPUT POWER
(.012V)
6 +12V (11.9V) 31 P4 FET 1 CURRENT
(.3V)
32 CANL (0V)
7 GND 8 +12V (11.9V) 33 P4 FET 2 CURRENT
(.3V)
34 GND
9 OUTPUT POWER (.023V) 10 PALLET 1 TEMP
(2.0V)
35 PA SUM CURRENT
(.3V)
36 /SPI-CS(TMS)
(3.2V)
11 REFLECTED POWER
(.022V)
12 PALLET 2 TEMP
(2.0V)
37 PS1 VOLTAGE
(3.8V)
38 SP1-SCK(TCK)
(3.2V)
13 FAULT STATUS 3 (4.95V) 14 PALLET 3 TEMP
(2.0V)
39 PS2 VOLTAGE
(3.8V)
40 SPI-MOSI(TDI)
(3.2V)
15 FAULT STATUS 2 (4.95 V) 16 PALLET 4 TEMP
(2.0V)
41 PS3 VOLTAGE
(3.8V)
42 SPI-MISO (TDI)
(3.2V)
17 FAULT STATUS 1 (0V) 18 AMBIENT TEMP
(2.0V)
43 PS4 VOLTAGE
(3.8V)
44 SPI-JTAG-SEL
(3.2V)
19 P1 FET 1 CURRENT (.3V) 20 ON/OFF FROM TB
(0 V)
45 PS5 VOLTAGE
(3.8V)
46 GND
21 P1 FET 2 CURRENT (.3V) 22 PSV TB SEL (0 V) 47 PS6 VOLTAGE
(3.8V)
48 BP SYNC
PRESENT (4.9V)
23 P2 FET 1 CURRENT (.3V) 24 GND 49 PS7 VOLTAGE (3.8V) 50 GND
25 P2 FET 2 CURRENT (.3V) 26 GND