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 (DSA)

The Differential Sensor Adapter (DSA) converts the sinusoidal signal of the ROTEC magnetic sensors into a pulse sequence with TTL level which is processed by the speed board of the ROTEC measuring system. At the scope output of the electronics, both the analog sensor signal and the digital pulse train can be tapped separately. The trigger point, i.e. the triggering of the digital pulse, is adjustable. The power supply for the electronics is provided by the speed board while the electronics in turn supplies the magnetic sensor with power.

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Input socket
4-pin Lemo
Input signal type
Sinus
Input signal range
5 mV to 1 Vpp, nominal
Input overvoltage protection
+/- 10 V
Input (tooth) frequency range
0,1 Hz to 10 KHz
Output socket speed signal
8-pin Lemo
Output signal type
TTL
Output socket scope signals
3-pin Lemo
Output analog sensor signal
10 Vpp / 10 kΩ
Output digitized sensor signal
TTL / 1 MΩ

Rotary encoder adapter

The Rotary Encoder Adapter is an adaptation electronics for rotary encoder signals and incremental linear scales with TTL or with SIN/COS level. The electronics generates a digital pulse train from the signals of the sensor, also with TTL level, which represents the actual measuring signal for the speed board of the ROTEC measuring system. The Rotary Encoder Adapter is able to detect the signals of the encoder both forward and backward and to derive direction information from them. The signals for the speed, the direction of rotation and the reference pulse (if available) are acquired and processed by the speed measurement board. The reference pulse can also be tapped from a separate socket so that it can be used as a start trigger for the measurements. The power supply for the electronics is provided by the speed board while the electronics in turn supplies the sensor with power.

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Input socket
12-pin flange socket
Input signal type
  • TTL / RS422
  • 1 Vpp SIN / COS
Input overvoltage protection
  • TTL / RS422 mode: -4 V to +8 V
  • SIN / COS mode: +/-25 V
Input (tooth) frequency range
0 Hz to 15 MHz
Output socket speed signal
8-pin Lemo
Output signal type
TTL
Output socket reference signal
8-pin Lemo
Sensor power supply voltage
5 V

Rotational direction adapter

The ROTEC 4-fold sensor electronics is used in conjunction with the ROTEC 4 fold speed sensors for measuring speeds with additional direction detection. The electronics converts the analog sinusoidal signal generated by the sensor into a digital pulse train with TTL level, which represents the actual measurement signal. Together with the analog cosine signal generated by the sensor, additional direction information is derived. The measuring signals and direction information are acquired and processed by the speed board of the ROTEC measuring system. The electronics has a scope output via which the analog sensor signal and the digital TTL pulse train are transmitted. The power supply for the electronics is provided by the speed board while the electronics in turn supplies the sensor with power.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Input socket
6-pin Lemo
Input signal types
SIN / COS
Input signal range
5 mV to 1 Vpp, nominal
Input overvoltage protection
+/-10 V
Input (tooth) frequency range
0,1 Hz to 10 KHz
Output socket speed signal
8-pin Lemo
Output signal type
TTL
Output socket scope signals
3-pin Lemo
Output analog sensor signal
10 Vpp / 10 kΩ
Output digitized sensor signal
TTL / 1 MΩ

Laser Tacho­meter

The ROTEC Laser Tachometer is used for optical measurement of the rotational frequency or rotational speed of rotating machine parts. The electronics generates a power-controlled laser light which is transmitted via the connected ROTEC laser sensor and is directed onto a reticle or reticle tape attached to the measuring object. The wavelength of the laser is in the visible range, so that the position of the measuring spot appears as a red dot on the target. The light-dark transitions of the target are scanned using the reflex method and the received optical signal is first converted into an analog-signal and then into a digital signal. The resulting pulse sequence with TTL level and speed-proportional frequency is detected ans processed by the speed board of the ROTEC measuring system. The power supply for the electronics is provided by the speed board.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Input socket
Fiber optics F-ST socket
Laser characteristics
  • Laser class 2
  • Laser power < 1 mW
  • Wave length 650 nm
Input (tooth) frequency range
  • 0 Hz to 65 KHz („Measure“ mode)
  • 1 Hz to 50 KHz („Learn“ mode)
Output socket speed signal
8-pin Lemo
Output signal type
TTL
Output socket scope signals
3-pin Lemo
Output analog sensor signal
5 Vpp / 100 kΩ
Output digitized sensor signal
TTL / 1 MΩ

Phase Shifter

The ROTEC Phase Shifter is used in conjuction with the ROTEC adaption electronics Rotary Encoder Adapter, Inline DGDAP TTL and Inline DGDAP HTL. The 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 as well as the bit for direction detection remain unchanged and are looped through from the input of the Phase Shifter to the output. Only the original reference mark is removed and replaced by a synthetically generated mark. This synthetic reference pulse can be tapped at a separete “Ref.” socket and used as a start trigger for the measurements. The power supply for the electronics is provided by the speed board.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Input socket
8-pin Lemo
Input signal types
  • TTL speed signal
  • TTL reference signal
Input (tooth) frequency range
0 Hz to 14 MHz
Output socket speed signal
8-pin Lemo
Output signal type
TTL
Output socket reference signal
8-pin Lemo
Output signal type
TTL

Inline TTL Digitizer

The Inline TTL Digitizer converts the sinusoidal signal of the ROTEC magnetic sensors into a pulse sequence of pulses with TTL level which is processed by the speed board of the ROTEC measuring system. The electronics is much more compact than the Differential Sensor Adapter (DSA) and is therefore particularly well suited for mobile applications. The power supply for the electronics is provided by the speed board while the electronics in turn supplies the magnetic sensor with power.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Input socket
4-pin Lemo
Input signal type
Sinus
Input signal range
5 mV to 1 Vpp, nominal
Input overvoltage protection
+/-50 V
Input (tooth) frequency range
0,1 Hz to 20 KHz
Output socket speed signal
8-pin Lemo
Output signal type
TTL

Inline DGDAP TTL

The Inline DGDAP TTL is a mobile version of our incremental encoder adapter. Its compact design makes it particularly suitable for use in vehicles or on motorcycles. Pulses can be measured in forward and reverse direction. The pulse following the reference mark (once per revolution) is always available. The Inline encoder adapter (DGADP) is also protected against reverse polarity.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Input socket
8-pin Lemo
Input signal type
TTL / RS422
Input overvoltage protection
+/-40 V
Input (tooth) frequency range
  • 0 Hz to 14 MHz (RS422 signals)
  • 0 Hz to 5 MHz (TTL signals)
Output socket speed signal
8-pin Lemo
Output signal type
TTL
Sensor power supply voltage
5 V

Inline DGDAP HTL

The Inline DGDAP HTL is a mobile version of our incremental encoder adapter. Its compact design makes it particularly suitable for use in vehicles or on motorcycles. Pulses can be measured in forward and reverse direction. The pulse following the reference mark (once per revolution) is always available. The Inline Encoder Adapter (DGADP) is also protected against reverse
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Input socket
8-pin Lemo
Input signal type
HTL
Input overvoltage protection
+/-40 V
Input (tooth) frequency range
0 Hz to 400 KHz
Output socket speed signal
8-pin Lemo
Output signal type
TTL
Sensor power supply voltage
5 V
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