A09-HSM-7 Digi International/Maxstream, A09-HSM-7 Datasheet - Page 67

• Manufacturer Part Number: A09-HSM-7
• Description: ANT 900MHZ 7" STRAIGHT W/RPSMA
• Manufacturer: Digi International/Maxstream

Specifications of A09-HSM-7

• Antenna Type: Whip: 1/2 Wave
• Number Of Bands: 1
• Frequency: 915MHz (902MHz ~ 928MHz)
• Vswr: 2
• Gain: 2dBi
• Termination: RP-SMA
• Mounting Type: Connector
• Height (max): 7.0" (177.8mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9XTend™ OEM RF Module ‐ Product Manual v2.x4x [2007.01.04]
RS-485 (4-wire) & RS-422 Operation
DIP Switch Settings and Serial Port Connections
Wiring Diagrams
Figure B‐22.
RS‐485 (4‐wire)& RS‐422 w/ Termination (optional)
Termination is the 120 Ω resistor between T+ and T‐.
DIP Switch settings are read and applied only while powering‐on.
Figure B‐20.
RS‐485 (4‐wire) & RS‐422
DIP Switch Settings
Note: Refer to Figures B-09 and B-10 for RJ-45 connector pin designations used in
RS-485/422 environments.
Table B‐06. RS‐485/422 (4‐wire) Signals and their implementations on the XTend Module Assembly
Figure B‐23. XTend Module Assembly in an RS‐485 (4‐wire) environment
© 2007 MaxStream, Inc.
DB-9 Pin
1, 4, 6
2
3
5
7
8
9
RS-485/422
R+ (RB)
R- (RA)
T+ (TB)
Name
T- (TA)
PWR
GND
Transmit Negative
Receive Negative
Transmit Positive
Receive Positive
Description
Signal Ground
Data Line
Data Line
Data Line
Data Line
Power
Figure B‐21.
Pins used on the female RS‐232 (DB‐9)
Serial Connector
not used
Serial data received by the XTend Module Assembly
Serial data received by the XTend Module Assembly
Serial data sent from the XTend Module Assembly
Serial data sent from the XTend Module Assembly
Optional power input that is connected internally
to the front power connector
Implementation
Appendix B: Development Guide
Ground
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