Comtech EF Data SFC4200 - Manual (Page 53)

SFC4200/SFC1275G Synthesized Frequency Downconverter Electrical Interfaces
TM054 - Rev. 4.0 5-3
Table 5-2. J6 – Equipment RS-485 Interface
Description 10 Pin
AS/3048 (J14)
1 GND 1
2 SRCLK 3
3 Not
Connected
5
4 Tx Not 7
5 Tx 9
6 SR DAT 2
7 Not
Connected
4
8 Rx Not 6
9 Rx 8
5.8 Test/Fault (J7)
The Test Port/High-Speed Switch Interface (J7) provides a port where all analog voltages used
in determining fault status by the microprocessor are made directly available to the rear panel of
the converter. Synthesizer and signal path faults can be verified with a voltmeter using the
following test points. The pinouts of this connector are listed in Table 5-3.
Table 5-3. J7 – Test/Fault Interface – D-Sub 15-Pin Connector
Pin No. Signal Description
Controller
AS/3048 (J5)
A/D Chan.
1 N/C 1
2 LOFLT Open Collector 3
3 GND 5
4 IFSIGDET IF Signal Detected Power Level
(0 – 10 VDC)
7
5 N/C 9
6 N/C 2
7 TEMP N/A 4
8 N/C 6
9 RFSIGDET RF Signal Power Level Detect
(0 – 10 VDC) (U/C Only)
8