Advertisement
5.5
Operating Method of Enforced Firmware Overwriting Mode
Enforced firmware overwriting mode is a mode to forcibly overwrite the transceiver firmware when the operations as instructed in
Section 2.2.2 "How to Enter Each Mode" does not allow the transceiver to enter the firmware programming mode, for instance, when
the transceiver fails to start up due to the transceiver failure.
(1) Prepare the followings:
• Transceiver (NX-3720, NX-3720H, NX-3820 or NX-3820H)
• Regulated DC power supply
• Programming interface cable (KPG-46U or KPG-46X)
• Power cable
(2) Remove the cabinet, top packing and shielding plate of the transceiver.
Connect a transceiver, regulated DC power supply, programming interface cable (KPG-46U or KPG-46X) and power cable.
(3) While FLDM terminal has a short-circuit with GND terminal on the PCB, turn its power ON.
Left: FLDM terminal
Right: GND terminal
(No.RA054<Rev.001>)1-167
Hide quick links:
Advertisement
