User`s guide

SkyTrac Systems Ltd.
Document Rev. 01.007 DOC0102 Page 20 of 23
Restricted Proprietary and Confidential Information
For example, if an external device (Eg. Palm device using SkyTrac Palm ITRAX software) is
connected to the RS232 bus, and a CDU-250 is connected to the ISAT-100, one possible
mailbox assignment for the CDU-250 is:
• Palm is the default (no configuration necessary)
• CDU-250 – Mailbox 3
If the ISAT’s call sign is “ISAT_1000”, to send email to the Palm device using the default
message mailbox (0), the email address would be [e-mail]
.
To send an email to an additional device, the assigned mailbox number needs to be added
to the email address of the ISAT. In this example, the CDU-250 has been assigned
message mailbox 3. Therefore, the email address of the CDU will be
[e-mail].
Configuring both devices to have the same message mailbox number is not supported.
Connecting two devices on the same bus is currently not supported.
Devices that are configured to have their own message mailboxes will have private
messaging only. Voice communication, regardless of the number of interfaces attached, is
still controlled by the single ISAT-100. All voice calls will go through the aircraft audio panel
and will not be private.
8 INSTALLING FIRMWARE
SkyTrac Systems will periodically supply new version of firmware that will add functionality
to the CDU-250. These files will be available on the SkyTrac website (www.skytrac.ca) to
download and be installed on both the CDP and DVI sections. If new firmware versions are
available for both the CDP-250 and DVI-250, they do not have to be installed in any
particular order.
8.1 Requirements
You will need the following to perform a DVI-250 firmware upload:
- Windows PC with an available serial port.
- 9-wire Serial Cable to connect the PC to the DVI-250 and CDP-250 programming
ports.
- Alternatively, a USB to serial cable may be used in place of a 9-wire serial cable.
- The latest DVI-250 and CDP-250 firmware upload packages
8.2 Firmware Upgrade Instructions
These instructions are for the DVI portion of the CDU-250. If a CDP upgrade is required as
well, follow the same steps but connect the cable to the programming port on the CDP-250.