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DTM-3237B – DVB-S2X Receiver with DVB-ASI Output
User Manual
Manageable Items – Category 0x94 – Satellite Information
Nr
Variable
0x0C FEC inner
4.6 Firmware Upgrade
4.6.1 Firmware Upgrade - Phases
Updating the firmware of the device consists of five phases:
1. Put the device in firmware upgrade mode by setting Mode (0x85, 0x01) to 1.
2. Erase the current firmware by writing any value to setting Erase (0x85, 0x02).
3. Upload the firmware. The file has to be uploaded in "parts" to setting Programming data (0x85,
0x03), were each part may contain 250 (I
4. Verify the uploaded firmware by reading from setting Verify (0x85, 0x04).
5. When the firmware upgrade is successfully completed, the DTM-3237B should be rebooted to
make the upgrade effective, by putting the device in normal operation by setting Mode (0x85,
0x01) to 0.
After the device has been upgraded and rebooted, the DTM-3237B checks the status of the firmware.
In case the firmware isn't correctly uploaded, the DTM-3237B will stay in firmware upgrade mode. In
this mode the firmware must be uploaded again, starting at the beginning of the firmware file.
When using the USB interface as communication port, care should be taken with entering firmware
upgrade mode or rebooting the DTM-3237B, since the USB connection is closed in between. To go
from normal operation to firmware upgrade mode or vice versa, preform these steps:
1. Send the command for switching the mode
2. Close the USB handle within 500ms after sending the mode switch command
3. Wait for the USB interface to disappear and reinitialize, before reopening the USB handle.
Description
Forward Error Correction (FEC) scheme
used
0 = Not defined
1 = 1/2
2 = 2/3
3 = 3/4
4 = 5/6
5 = 7/8
6 = 8/9
7 = 3/5
8 = 4/5
9 = 9/10
10 = Reserved
11 = Reserved
12 = Reserved
13 = Reserved
14 = Reserved
15 = No convolutional coding
2
C) to 1.000 (LVTTL serial control port) bytes.
30
Access
Type
RO
uint8
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