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Advanced Microwave
Technologies
DVANTECH
3.3 RS-485 INTERFACE
This serial communication interface provides access to all monitor and control functions for the
SSPB Up-Converter.
The RS-485 interface in a redundant system must be connected to the Network Management
System (NMS). The NMS will have access to both units, discriminating them by address.
The interface uses a 6-pin circular connector mounted on the unit enclosure. The type of
m
ounting connector is listed in TABLE 5
p
age 16
. The pin assignment for this interface is shown in TABLE 9.
If this interface
is being used, an interconnecting cable with the proper mating conn
fabricated.
TA
BLE 9: RS-485 INTERFACE – PIN ASSIGNMENT
Pin
Type
A
O utput
B
Output
C
Input
D
Input
E
N/C
F
Common
CAUTION:
The communications protocol for this serial interface is RS-485. To use the
standard IBM
compatible personal computer (running DOS 3.1 or higher) with an RS-232
serial port, you must use an RS-422/RS-232 adapter (provided as an option).
3.4 RF OUTPUT MONITOR INTERFACE
This RF output sample port is located at the Mon connector, which is mounted on the unit
enclosure. The type of mounting connector is listed in TABLE 5 at page 16 and the location is
shown in Figure 3 at page 16. This interface is used for the independent monitoring of the SSPB
output power. A table of the coupling factor versus the frequency is provided with each unit.
This port should only be used for output power monitoring (via an external power meter) or
should be kept capped if not used.
at page 16 and the location is shown in Figure 3 at
Signal Name
TX+
Serial transmit TX+
TX-
Serial transmit TX-
RX+
Serial receive RX+
RX-
Serial transmit R
N/A
Not connected
GND
Serial common
SSPBM-K100-BTE
ector must be
Description
X-
Page 21
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