XStream‐PKG‐R™RS‐232/485RFModem–ProductManualv5.x00[2006.02.24]
Adapters
The XStream Development Kit comes with several adapters that support the following functions:
• Performing Range Tests (Serial Loopback)
• Connecting to other RS-232 DCE and DTE devices (Male-to-Male NULL modem)
• Testing Cables (Female-to-Female NULL modem)
• Connecting to terminal blocks or RJ-45 (for RS-485/422 devices)
Serial Loopback Adapter
Part Number: JD2D3-CDL-A (Red, DB-9 M-F) The serial loopback adapter is used for range
testing. During a range test, the serial loopback adapter configures the radio modem to function
as a repeater by looping serial data back into the radio for retransmission.
FigureB.1. Serialloopbackadapterandpinouts
NULL Modem Adapter (male-to-male)
Part Number: JD2D2-CDN-A (Black, DB-9 M-M) The male-to-male NULL modem adapter is used
to connect two DCE devices. A DCE device connects with a straight-through cable to the male
serial port of a computer (DTE).
FigureB.2. MaleNULLmodemadapterandpinouts
FigureB.3. ExampleofaMaxStreamRadioModem(DCEDevice)connectingtoanotherDCEdevice)
NULL Modem Adapter (female-to-female)
Part Number: JD3D3-CDN-A (Gray, DB-9 F-F) The female-to-female NULL modem adapter is
used to verify serial cabling is functioning properly. To test cables, insert the female-to-female
NULL modem adapter in place of a pair of modem assemblies (XIB-R-R interface board +
XStream Modem) and test the connection without radio modems in the connection.
FigureB.4. FemaleNULLmodemadapterandpinouts
ForuseinRS‐485/422systems:
DB‐9toRJ‐45adaptersare
illustratedintheRS‐485/422
ConnectionGuidelinessection.
©2006MaxStream,Inc.Confidential&Proprietary 58
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