9XTend
‐
NEMA™
RS
‐
232/485
RF
Modem
–
Product
Manual
v2.x4x
[2007.01.04]
©
2007
MaxStream,
Inc.,
Confidential
&
Proprietary
‐
All
Rights
Reserved
7
I/O & Power LEDs
LEDs indicate modem activity as follows:
Yellow (top LED) = Serial Data Out (to host)
Green (middle)
= Serial Data In (from host)
Red (bottom)
= Power/TX Indicator (Red light is on when powered and pulses off
briefly during RF transmission)
Config (Configuration) Switch
The Config Switch provides an alternate method for entering the modem into Command Mode. To
enter the modem into Command Mode (at the default RF data rate of the modem), depress the
Config Switch for two seconds.
1.3.2. DB-9 to Screw Terminal Adapter
The 9XTend-NEMA RF Modem comes wired to sustain RS-232 communications through the DB-9
serial port located on the end of the CAT5 cable. RS-485/422 applications will require different wir-
ing schemes. Use the following wiring block diagram for RS-485/422 applications.
Figure
1
‐
03. Wiring
Block
Diagram
1.3.3. PWR/DB-9 Adapter Board
The PWR/DB-9 Adapter board is used for powering the 9XTend-NEMA RF Modem and connecting
the modem through standard serial connections. The adapter board facilitates connections to
serial devices which is useful for tasks such as modem configuration and range testing.
Figure
1
‐
04. PWR/DB
‐
9
Adapter
Board
DB-9 Serial Port
Standard female DB-9 (RS-232) DCE connector - The connector can be also used for RS-485 and
RS-422 connections.
Power Connector
2.1mm, 7-28 VDC Power Connector
Note: The XTend RF Modem can accept voltages as low as 5 (±5%) Volts.
Contact MaxStream technical support (801) 765-9885 to implement this option.
RJ-45 Ethernet Port
Standard Female RJ-45 connector is used to connect unshielded twisted-pair CAT5 cabling.
