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NXR-901
3-3. KCT-53U Description (USB adapter: Option)
The KCT-53U is cable which connects the RS-232C
Cross-wired cable to a USB port on a computer.
When using the KCT-53U, install the supplied CD-ROM
(with driver software) in the computer. The KCT-53U driver
runs under Windows 2000, XP or Vista (32-bit).
3-4. Programming Software Description
The KPG-109D is the programming software for NXR-901
supplied on a CD-ROM. This software runs under Windows
XP, Vista or 7 on a PC.
The data can be input to or read from NXR-901 and ed-
ited on the screen. The programmed or edited data can be
printed out. It is also possible to tune the transceiver.
3-5. Programming With PC
Data can be programmed into the fl ash memory in RS-
232C format via the COM connector.
KPG-109D
(ver. 2.80 or later)
PC
D-SUB
(9-pin)
RS-232C
Cross-wired cable
Transceiver
4. Firmware Programming Mode
4-1. Preface
The NXR-901 uses fl ash memory to allow it to be easily
upgraded when new features are released in the future.
4-2. Connection Procedure
Connect the NXR-901 to the personal computer with the
RS-232C Cross-wired cable. (Connection is the same as in
the PC mode.)
4
REALIGNMENT
Interlink
cross-wired cable
NXR-901
PC
USB
KCT-53U
RS-232C
Cross-wired cable
Transceiver
Fig. 1
Note:
You can only program fi rmware from the DB-9 COM con-
nector on the front panel. Using the 25-pin logic interface on
the rear panel will not work.
4-3. Programming
1. Start up the programming software (Fpro. exe).
The Fpro. exe exists in the KPG-109D installed folder.
2. Set the communications speed (normally, 115200 bps)
and communications port in the confi guration item.
3. Set the fi rmware to be updated by fi le name item.
4. Turn the NXR-901 power on.
5. Check the connection between the NXR-901 and the per-
sonal computer, and make sure that the NXR-901 is in
the program mode.
6. Press write button in the window. A window opens on the
display to indicate progress of writing.
7. If writing ends successfully, the NXR-901 restarts.
8. If you want to continue programming other NXR-901s,
repeat steps 3 to 6.
Note:
It automatically enters the fi rmware program mode by the
writing request from the programming software (KPG-109D).
4-4. Function
Baud rate is decided automatically with setting of pro-
gramming software.
Note:
Normally, write in the high-speed mode (115200 bps).
■ Cross-wired cable
There are a few types of null modem cable available in
the market. Make sure to use one of the following null mo-
dem cables that meets the following specifi cations.
Cable Specification: Null modem cable with full hand-
shaking (cross-wired) or InterLink cable that is usually used
to transfer fi les between PCs.
Connector Specifi cation (both cable ends): DB-9 female
DB-9
DB-9
Female
Female
DB-9
DB-9
Female
Female
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3
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5
5
6
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7
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8
Shell
Shell
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