1275T / 1285T Series
Digital Clock Display
Page - 34
Revision 1.0
UPGRADE
6.3.
UPGRADE FIRMWARE
This section explains how to upgrade the firmware of the 1275T/1285T through the Serial Port (or RS-
232).
Important Note:
Failure in the process of Firmware upgrade could result in the
device becoming temporarily unusable. Keeping that in mind, make sure that the pre-
requisites mentioned are in place and the process is closely followed.
6.3.1. Upgrade through Serial Port
This section clearly outlines the steps required to upgrade the device firmware using the onboard serial
port. It has some requisites in order to be successful, however, which are mentioned below:
Pre-Requisites:
A male to female D-Sub 9 pin serial extension cable must be available.
Computer with serial (RS-232) cable connected and functioning.
Computer terminal program (e.g. Hyper Terminal / Terra Term).
Correct version Firmware file is available and easily accessible by computer
Once the pre-requisites have been met, you may proceed with the upgrade process.
6.3.1.1. Connecting Serial Port
Connect the Serial Cable (RS-232) to the back of the 1275T/1285T device, as indicated in figure 6-8
below.
Figure
6-5 : 1275T/1285T Serial Port Connection
