TLMscope help

A quick tour of what each view shows and how to get the most out of it.

First steps

Drop one or more .TLM files onto the start page, or click to choose them. You can add more files any time.
Pick a session in the list on the left. On a phone the list is a picker at the top. Each power-up of the receiver is one session.
“Flights” shows real flights only, “All” also ground tests and short power-ups. With several models loaded, you can limit the list to one model.

The overview of a flight: summary, key numbers and height profile.

Plain view and details

By default you see plain-language summaries and four-level ratings, for example Critical, Weak, Normal and High. Switch on “Show details” at the top right for exact values, more charts and the limits behind every rating. The reasons for the limits are explained in Understand your Spektrum telemetry.

The tabs of a session

Overview: a summary sentence, key numbers, the height profile with motor climbs, glides and lift, and the health check.
Height & lift: climbs, lift found and the glide.
Flight path: the path on a map and in 3D with a replay (needs a GPS sensor).
Motor & energy: motor runs, current, charge used and the climb efficiency.
Battery: charge level, cell voltages and the voltage sag that gives the internal resistance.
Radio link: signal strength, frame losses and holds over time, and the signal against height.
Aircraft: temperatures, receiver and BEC voltage, loads and the stabilization mode.
Raw data: all decoded sensor streams, shown with “Show details”.

Flight path and replay

With a GPS sensor the flight path is shown on a map in 3D. Hold the right mouse button and move up or down to tilt the view. The replay plays the flight back at up to 60 times speed; the model marker, every chart and an optional vario tone follow. Space starts and stops it, and a full-screen mode gives the map more room. The map tools let you choose the line style, the model shown in the replay and a ground shadow.

The flight path of a demo flight in 3D on a map, coloured by motor climb, glide and thermal, with the replay below — The flight path in 3D, coloured by phase, with the replay below.

Batteries and data inventory

Batteries groups the flights by Spektrum Smart battery. Each pack shows its charge cycles, its condition, a trend of the internal resistance and an estimate of the cycles left. The list of sessions of a pack opens with one click.
Data inventory lists everything found in the loaded files, including the parts that are not understood yet.

Keys, language and privacy

Arrow left and right move to the older or newer session; arrow up and down move through the list while it has the focus.
Space starts and stops the replay; Esc closes the full-screen mode.
EN and DE at the top right switch the language.
Files are read in your browser and never uploaded. Only the map loads map images from OpenFreeMap.