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7.1
PX-2300R Jumper Setting:
The function of the jumpers in the PX-2300R as identified in Figure 7-2 are identical to the jumpers on the
PX-2300M surface mount modem.
Refer to Section 4.0 for more information regarding the jumper settings. They are the same as in the PX-
2300M module, with the exception of Jumpers 1 & 2. These jumpers are located on another section of
the circuit board.
JP1 – RS-485 (diagnostic) – 120 ohm Rx
JP2 – RS-485 (diagnostic) – 120 ohm Tx
* - default factory setting of Jumpers 1, 2
7.2
USB Port Configuration
If you are going to connect the diagnostic computer to the PX-2300R USB port, please following these
instructions for proper installation of the USB drivers (FTDI Virtual COM Port - VCP):
1. Turn power on the Subrack and PC;
2. Plug in the USB cable. This should bring up Found New Hardware Wizard;
3. Insert SpectraSmart installation CD and click Next;
4. Click "Search for a suitable driver for my device(recommended)", select Next;
5. Click CD-ROM drive, select Next;
6. If the Wizard found the driver, click Next, then Finish.
7. If the Wizard did not find the driver, click Back, then click "Specify a location" , then Browse
and find folder 'Drivers' on CD-ROM drive (usually D: or E:), select Next;
8. If the Wizard found the driver, click Next, then Finish.
If SpectraSmart had been in use previously with the RS-232 port & driver, it will be necessary to
change the Port in PC Registry. DO NOT TURN OFF THE SUBRACK. In the computer click Start
-> Settings -> Control Panel -> System ->Hardware -> Device Manager. Click + near Ports. In
the list under Ports find USB (COMX), where X is number of virtual COM Port. Usually it is
COM3 or COM4.
Start SpectraSmart PC program. When the Copyright screen appears click "Ctrl+P". A "Choose
Port #" window will come up. Select the "X COM Port", captured by USB that was previously
identified and click 'OK'.
11/11/2006
J1
J2
o--o o o o--o
o o--o o--o o
J1
J2
20
Hi-Z
*
120 Ohm
Rev 2.0
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