GRAUPNER HOTT GR-32

Telemetry
The socket marked “T” is intended for the optional te-
lemetry sensors and is used for loading rmware up-
dates in conjunction with the USB interface.
3.2. Low voltage warning
If the receiver voltage falls below 3.8 V, the transmitter’s RF module generates a low voltage warning in
the form of a “general alarm sound”: a steady beeping at intervals of about one second.
3.3. Temperature warning
If the receiver temperature falls below -10° C or exceeds +70° C, the transmitter’s RF module generates
a temperature warning in the form of a “general alarm sound”: a steady beeping at intervals of about
one second.
4. FIRMWARE UPDATE
Firmware updates for the receiver can be transferred via the socket „T“ in conjunction with a PC running
Windows XP, Vista or 7. For this you also require the USB interface, Order No. 7168.6, and the adapter
lead, Order No. 7168.6A, which are available separately.
The programs and les required for this are available from www.graupner.de in the Download area for
the corresponding products.
Install the Firmware Update Utility Graupner and the USB drivers on your computer. Check the system
requirements!
The rst step is to cut through the central red wire in the adapter lead,
Order No. 7168.6A, then connect the lead to the USB interface, Order
No. 7168.6. This socket is also polarised; note the small chamfer on one
edge. Never use force - the plug should engage easily and fully.
4.1. Receiver
Connect the adapter lead to the socket „T“ of the receiver, as shown in the
illustration. This socket is also polarised; note the small chamfer on one
edge. Never use force - the plug should engage easily and fully.
4.2. Update procedure
Ensure that the adapter lead is congured as shown in the illustrations, and is connected correctly to
the transmitter or receiver.
Start the Firmware Upgrade Graupner Studio.
Under „Port Select“ select the correct COM port „Silicon Labs
CP210x USB to UART Bridge“, i.e. the one to which the USB
lead is connected.
Choose the „HoTT receiver update“ menu. Now click on the
“File Browse” button and select the the previously loaded rm-
ware le ending in *.bin. If everything is correct, the le will
03 Manual Receiver GR-32 Graupner HoTT 2.4
Telemetry socket
(socket „T“)