User's Manual

20-496 Owner’s Manual Draft Page 59/78
a location with marginal reception, you may find that the voice quality of digital signals deteriorates very
rapidly, resulting in missing syllables or entire words. If this happens, try reorienting the scanner or antenna
for better reception. You may also try pressing the ATT key and apply attenuation to reduce the overload
effects of nearby strong transmitters.
Under certain very weak digital signal conditions, the scanner may lose synchronization with the digital
signal and briefly revert to analog FM, resulting in the reception of the raw, undecoded digital signal. This is
a normal indication of a digital signal that is too weak to decode.
UPDATING THE DSP FIRMWARE
If necessary, the firmware for the DSP module can be updated by the user in the field by downloading a file
from the Internet and transferring it to the scanner.
From time to time, improvements may be incorporated into the DSP firmware. These improvements will
typically be designed to address issues that may be present with decoding the digital audio signals, and
audio quality improvements. With updateable DSP firmware, you can ensure that your scanner is using the
most recent DSP version available.
To update your scanner’s DSP firmware, you will need the following items:
. The PC to scanner interface cable
. A personal computer running Windows 95 or greater
. A firmware update file from www.radioshack.com
Follow these steps to update your scanner’s DSP firmware:
1. Go to http://www.radioshack.com
2. Click on the Product Manuals tab.
3. Select Software Downloads from the drop down menu.
4. Click on PRO-2096 DSP Firmware
5. Full download and upgrade instructions are provided on the Firmware Upgrade page.
6. To check the DSP version number, turn on the scanner and press 3 while Welcome to Digital Trunking
appears in the scanner display. The scanner will display version information as follows:
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