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© Elsys AG 

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Plug-In Channel Module

 

Front View

 

 

 

Rear View 

 

 

Control Elements 

Front Side 

Main switch (Base Unit)  :To switch on or off the device. 
LED-Displays 

:  Each LED belongs to a channel, from which it indicates the pulse 

signal on the channel output. 

Rotary switch 

GAIN

  :  Rotary switches named 

GAIN

. This switches adjusts the gain for 

one channel. Possible gain factors are 1, 10, 100 and automatic. 

Toggle switch 

Pol.

 

:  Switches named 

Pol

. This switches can invert (-) or not invert (+) 

the output signal of the preamplifier. 

Position left (+) 

:  Trigger-Pulse on negative slope (Diff. = off), and neg. peak 

values (Diff. = on). 

Position right (-)  :  Trigger-Pulse on pos. slope (Diff. = off), and pos. peak values 

(Diff. = on). 

Toggle switch 

Diff.

 

:  Switches named 

Diff

. Each one switches on or off the 

differentiator for one channel. If the differentiator is on, the signal 
is attenuated at the input by a 

factor of 50

Toggle switch 

dU/dt

:    Switches named

 dU/dt.

 Each switch is for changing the time 

constant from the differentiator for one channel. For low 
frequency signals (<1kHz) it’s preferred to choose the operating 
position “flat slope” (left), for fast signals (>1kHz) the operating 
position “steep slope” (right) should be selected. 

 

Summary of Contents for EL-BU-14/TRIG_R

Page 1: ...escription The device EL TRIG_R is able to produce TTL Trigger Pulses out of analog signals from reluctance or capacitive and eddy current sensors Front View Rear View ELEKTRONISCHE SYSTEME Tel 41 56 496 01 55 Mellingerstrasse 12 Fax 41 56 496 01 61 CH 5443 Niederrohrdorf Email info elsys ch ...

Page 2: ...signal of the preamplifier Position left Trigger Pulse on negative slope Diff off and neg peak values Diff on Position right Trigger Pulse on pos slope Diff off and pos peak values Diff on Toggle switch Diff Switches named Diff Each one switches on or off the differentiator for one channel If the differentiator is on the signal is attenuated at the input by a factor of 50 Toggle switch dU dt Switc...

Page 3: ...to monitor the signal at the preamplifier output Output Diff BNC Connector named Diff to monitor the signals after the differentiator circuit Output Pulse BNC Connector named Pulse Output of TTL signal after the zero crossing detector circuit Block diagram The graphic below shows the functional operation of one channel A m p I n v e r t D i f f T r i g g e r S e n s o r P u l s P o l D i f f o n o...

Page 4: ...Signal Sinus symmetric to zero line Frequency 30Hz 30kHz Gain factor See table below Polarity May be neglected Differentiator Off Time constant from Differentiator May be neglected Gain Responsivity approx 1 100 mVpp 10 10 mVpp 100 1 mVpp Auto 2 mVpp Input sensitivity and trigger level with Differentiator switched ON for Capacitive and Eddy current Sensors Signal Sinus symmetric to zero line Gain ...

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