User manual

Publication AG-UM008C-EN-P - February 2005
8-38 Configuring Modems
MDS Model 9810 Spread Spectrum
Model 9810 is a spread-spectrum modem, which operates under FCC
Part 15 rules to provide unlicensed operation for point-to-point and
multipoint radios. Spread-spectrum is a frequency-varying technique
that lets several spread-spectrum modems operate within the same
radio frequency band.
Cable Pin Assignments
Model 9810 requires a 25-pin male connector with the following pin
assignments:
Figure 8.24 MDS Model 9810 Spread Spectrum Data Transceiver
DC IN
+
-
ANTENNA
DIAG
PWR SYNC TXD RXD
RS-232 data port
SLC 5/03
Female DB 25-pin
connector
Male DB 25-pin
connector
RS-232 data port
Table 8.32 MSD Model 9810 Pin Assignments
Modem
25-pin female
Pin Name Pin Name PLC-5
25-pin female
SLC
9-pin male
1 Protective GND — Shield 1 CASE
2 TXD.IN — TXD.OUT 2 3
3 RXD.OUT — RXD.IN 3 2
4 RTS.IN — RTS.OUT 4 7
5 CTS.OUT — CTS.IN 5 8
6
DSR.OUT
(1)
— DSR.IN 6 6
7 SIG.GND — SIG.GND 7 5
8 DCD.OUT — DCD.IN 8 1
(1) DSR.OUT provides a +8V DC DSR signal through a 1K-ohm resistor.