Electronic units

ROTEC electronics guarantee reliable and accurate amplification and processing of all signals and measured variables. The sensor signals are converted into a TTL signal as an input into the speed board.

Differential Sensor Adapter

The Differential Sensor Adapter (DSA) converts the sinusoidal signals of the ROTEC magnetic sensor into a pulse sequence of needle pulses with TTL level, which are processed by the RASdelta speed measurement board. The analog sensor signal and the digital pulse sequence can be tapped separately at the scope output of the electronics. The trigger point (triggering of the digital pulse) is adjustible. The electronics can optionally trigger the rising, falling or both edges of the incoming sensor signal.

Rotary Encoder Adapter

The Rotary Encoder Adapter is used to adapt rotary encoder signals and incremental linear scales with TTL or SIN/COS signals. The electronics generates a digital pulse train with TTL level from the encoder signals, which is used as measuring signal. The Rotary Encoder Adapter records the encoder signals forwards and backwards and derives direction information from them. The signals for the speed and direction of rotation as well as the reference pulse (if available) are recorded and processed by the RASdelta speed measurement card. The reference pulse can also be tapped at a separate socket and used as a start trigger for the measurements.

4-fold Sensor Electronics

The 4-fold Sensor electronics is used to measure speeds with direction detection. It converts the analog sinusoidal signal generated by the sensor into a digital pulse train with TTL level, which serves as the measuring signal. Together with the analog cosine signal, the direction information is also derived. The analog sensor signal and the digital TTL pulse sequence can also be tapped separately at the scope output socket.

Laser Tachometer 3

The ROTEC Laser Tachometer 3 is used for optical measurement of the rotational frequency or rotational speed. The electronics generates a power-controlled laser light that is transmitted from the sensor to a black/white pattern (disc or tape) attached to the measurement object. The light-dark transitions of the target are scanned using the reflex method. The optical signal received is first converted into an analog signal and then into a digital signal. This results in a pulse sequence with TTL level and speed-proportional frequency. The analog sensor signal and the digital pulse sequence can be tapped separately at the scope output of the electronics.

Encoder Phase Shifter

The Encoder Phase Shifter delays the reference signal output by the adaption electronics by an adjustable number with respect to the speed pulses output on the sensor line. The speed pulses themselves and the bit for direction detection are looped through the phase shifter unchanged. Only the original reference marker is removed and replaced by a synthetic reference mark, which can be tapped at a separate “Ref.” socket and used as a start trigger for the measurements. The phase shifter supports the adaptation electronics Rotary Encoder Adapter and Inline DGADP (incremental encoder adapter) TTL/HTL.

Real Time Valve Train Module

The electronics is used as an evaluation unit for measurements on the valve train. It conditions the sensor signal and calculates the valve lift with an accuracy of +/- 10 μm. The result is provided at the BNC connector as an output voltage between 0-10 V, proportional to the valve movement. The valve train module offers up to four measurement channels, a high resolution and has a high sampling frequency of the sensor raw signals. The valve position is detected within 1 μm and output in real time as an analog voltage. This means that even very fast movements can be reliably detected.
Valve dynamics measurement technology

GMR Sensor Adapter - Valve Train Module

The GMR Sensor Adapter is suitable for valve lift measurements with the FixPitch sensor from Sensitec (GLM711AVB). The electronic unit is used to amplify the acquired raw signals as well as to ensure a noise-free signal and sufficient bandwidth (signal bandwidth > 100 MHz / gain flatness 0,1 dB, up to 300 MHz). The amplified sensor signals are output via separate sine and cosine outputs. The connection of two sensors in parallel is possible. 
→ Valve dynamics measurement technology

Inline TTL Digitizer

The Inline TTL Digitizer (Inline-DSA) is the compact version of the ROTEC Differential Sensor Adapter (DSA) and is particularly suitable for mobile use.
The electronics converts the sinusoidal signals of the ROTEC magnetic sensor into a pulse sequence with TTL level, which is processed by the RASdelta Speed Board.

ROTEC Inline Digitizer

Inline DGDAP TTL / HTL

The Inline DGADP TTL (inline incremental encoder adapter) is the compact version of the ROTEC Rotary Encoder Adapter and is particularly suitable for mobile use. It is also available in two versions: for TTL and for HTL incremental encoders.
The adapter generates a digital pulse train with TTL level from the encoder signals, which is used as measuring signal. It records the encoder signals forwards and backwards and derives direction information from them.