SFT 6000N
Technical Specifications
Programmable Eddy Current PC Board

Frequency Range

Digitized oscillator : 1 KHz up to 5 MHz in minimun steps of 100 Hz.

Output Injection

Output via wideband transformer - floating output independent of probe configuration.
Bandwidth : 5 MHz at -1 dB.
Amplitude range : 0-10 Vpp; software selectable in steps of 1 Vpp.
Output impedance : 11 Ohms.
Output connector : J1 - SubD 9 pin female.
 

Receiver

Bandwidth : 6 MHz at -3 dB.
Gain : - Fixed gain : 28 dB.
         - Software variable gain : from 28 to 68 dB in
           1dB steps ( linear to 62 dB)
Noise : 75 mVpp on X & Y ( at 62dB gain, input shorted,  10 Vpp injection, continuous high-pass filter and 500 Hz low-pass filter).
Automatic balance.
Permanent balance ; software selectable balance speed from 1 to 100%.
Residual modulation - compensation at the input : 360 mVpp.
 

Filters

Two softwares selectable filters on each channel(X & Y).
High-pass filter : continuous - 2.5 - 10 - 25 - 55
  100 - 250 - 500 Hz (differentiation)
Low-pass filter  : 20 - 50 - 100 - 500 Hz ( integration)

Signal analysis

Polar display of phase and amplitude
Synchronous demodulator - bandwidth : 500Hz at - 3dB.
Phase rotation : software selectable 0-360°.
  -clockwise in 1° or 10° steps
  -counter clockwise in 1° steps
Attenuation : software selectable 0 to 100% in 1% steps for +X and +Y(optionally +/- X and +/-Y when configured for dual frequency operation).

A/D converter

Output data : X and Y 12 bits conversion presented to PC bus.
Conversion time : 30 µS

Inputs

Product presence signal : ON/OFF selectable by software.
Opto-coupler input : 0-24V DC.
Connectors : J2(subD 15 pins female)

Outputs

Dynamic range :+/- 5 Volts for X and Y axis.
Analog outputs : X & Y, after filteration, phase rotation and coefficient adjustment (X & Y output optionally available unfiltered,with no rotation and coefficient adjustment).
Multiplexed outputs : Xm & Ym  when board set to operate in multi-channel , parallel mode.

Multi-Channel Mode

Up to sixteen SFT 6000N Eddy Current boards in a single PC operating in parallel.
Switch selectable board adressing...
Dual Frequency mode: requires two SFT6000N PC boards set as follows:
               - one board set a Master via switch receives output from the second (slave) board at the frequency mixing stage.
               - one SFT 6004 Filter/Adder board.

Power Supply

Without load           With 50 Ohms load(10Vpp)
+ 5V   : 900 mA                900 mA
- 5V   : 160 mA               160 mA
+ 12V : 260 mA               260 mA
- 12V  : 260 mA                260 mA

Size

ISA Bus connector (8 or 16 bits).
Full length board.
Max thickness ( at back end of board) : 3 cm(3/4 and 1/2 length PC boards may be used in between multiple SFT 6000N boards).

Software

Menu driven : X-Y polar display - temporal display of X and Y- signal record and saving to hard disk.Sofratest optionnaly offers a variety of industrial grade applications software for the SFT 6000N board.Further details are available from SOFRATEST.

Sofratest keeps the right to revise the specifications without notice