Upgrade Manual User guide

GDM-8261(A) Firmware Update
2
GDM-8261(A)Firmware Update Procedure
Firmware Update
Procedure
1. To update the DMM firmware, the GTL-247 USB
cable and the GDM-01 Calibration key are
required.
CAL Key
USB Cable
2. Ensure the power is off on the DMM.
3. Insert the USB cable
into the rear panel
USB port on the
DMM. Insert the CAL
key into the CAL KEY
port on the rear panel.
4. Plug the other end of
the USB cable into the
PC that will perform
the update.
5. Power up the DMM.
The screen should be
blank at this stage.
6. The DMM should now be accessible as a
removable disk in the Windows File Explorer.
Here, for example as F:\