Jackson Labs Micro-JLT GNSS, User Manual

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Micro-JLT GNSS™ User Manual
E) Set the Oscillator (MHz) to “10.0” shown in Figure 4.8 .
F) Check the box marked “Erase blocks used by Hex File” shown in Figure 4.8 .
Warning: Make sure NOT(!) to check the box marked “Erase all Flash” under any
circumstances, this will erase factory calibration data, and the unit will not
operate and will have to be returned to the factory. Checking this box on the
ISP utility will thus void the warranty.
G) Under “Step 3 - Hex File” browse for the hex file that you downloaded in Section 4.4 .
H) Under “Step 4 - Options” check “Activate Flash Bank”.
I) Go to Step 5 and press “Start”. You will observe the firmware being downloaded to the processor.
H) Verify the firmware update in Section
4.5 .
4.5 Verifying Firmware Update
Power cycle the unit with the pin 1of J4 and pin 1 of J1 (ISP#) left floating. Both LED’s should blink.
During power on, the unit sends an ID string out of the serial port at 115200 Baud by default. The
firmware version can also be queried by sending the *IDN? command. Verify that the firmware
version is the version that was downloaded.