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NI ELVIS Platform functions available at the FOTEx front panel:
All NI ELVIS functions provided are directly connected to the NI ELVIS signals, and their performance is in accordance with NI ELVIS specifications.
Digital I/O:
Digital inputs D IN-0 to IN-3
Digital outputs D OUT-0 to OUT-3
Function Generator:
Input VCO IN;
Outputs FUNCTION OUT and SYNC OUT
Analog I/O:
Inputs ACH0 and ACH1
Outputs DAC0 and DAC1
Variable Power Supplies:
Outputs "+" and "-"
Amplifier
Bandwidth DC to approx 500kHz
Gain 0 to 10
Fiber Optic Couplers
Fiber Optic Device four port coupler, two identical couplers provided
Coupler Characteristics
Strong Path port-to-port loss typically 4.5dB, A to D and B to C
Weak Path port-to-port loss typically 6dB, A to C and B to D
Back Reflection typically 21dB, A to B and C to D
Fiber Optic Connector System single way, 'dnp' (dry non-polish) system
Fiber Optic Cable 1000um, polymer, single core fiber optic cable, sheathed in polyethylene
Fiber Optic Receiver
Fiber Optic Device high speed, low noise PIN photo diode, 800nm peak spectral input
Fiber Optic Connector System single way, 'dnp' (dry non-polish) system
Fiber Optic Cable 1000um, polymer, single core fiber optic cable, sheathed in polyethylene
Outputs TTL level digital signal, and, standard FOTEx level analog signal
Output Frequency Range DC to > 1MHz
Fiber Optic Transmitters Red/Green
Input TTL level digital signal, or standard FOTEx level analg signal, switch selectable
Input Frequency Range DC to > 1MHz
Fiber Optic Device - RED high radiance LED, 660nm peak spectral output
Fiber Optic Device - GREEN high radiance LED, 530nm peak spectral output
Fiber Optic Connector System single way, 'dnp' (dry non-polish) system
Fiber Optic Cable 1000um, polymer, single core fiber optic cable, sheathed in polyethylene
Fiber Optic WDM Filters Red/Green
Fiber Optic Device red and green wavelength filters
Filter Characteristics
Red Filter Loss typically 6dB
Green Filter Loss typically 7dB
Extinction of the other Wavelength typically 18dB
Fiber Optic Connector System single way, 'dnp' (dry non-polish) system
Fiber Optic Cable 1000um, polymer, single core fiber optic cable, sheathed in polyethylene
Headphone Aplifier
Output power 125mW, stereo socket
Headphone Type and Connector 3.5mm stereo, > 8ohm impedance
Line Code Encoder
Input data from Sequence Generator "X" or "Y" data sequence
CLK same digital-level clock as Sequence Generator CLK signal, fmax > 100kHz
Output LINE-CODE signal +/-2Vp-p
Lowpass Filters
3kHz Lowpass Filter F[sub]cut-off[/sub] = 3kHz +/- 5%
Maximum input +/- 4Vpk
Gain = 1.2
Type: 4th order Butterworth
1kHz Lowpass Filter F[sub]cut-off[/sub] = 1kHz +/- 5%
Maximum input +/- 4Vpk
Gain = 1.2
Type: 4th order Butterworth
Master Signals
Output Frequencies
100kHz digital signal (high speed sample clock)
10kHz sample clock (sub-multiple of the high speed clock)
2kHz sinusoidal and digital (sub-multiple of the fast clocks)
500Hz digital (slow speed sample clock)
Output Levels
4V pk-pk, analog
Digital level, 0V to 5V
PCM Bit Clock Regenerator
Input PCM data stream generated with a 100kHz bit clock
Output 100kHz bit clock
Signal Levels 0 to 5V digital signals
PCM Encoder
Input Vin +/-2.5V, DC coupled
Bit Clock Input <=100kHz, digital-level
Output Signal serial, digital-level data stream in offset binary format
Output Format 7 bit data plus embedded Frame Sync
Frame Synchronization FS synchronization signal coincident with frame's LSB
TDM Mode two input Time Division Multiplex system
PCM Decoder
Input PCM Data serial, digital-level data stream in offset binary format
Input Format 7 bit data plus embedded Frame Sync
Bit Clock Input <=100kHz, digital-level; positive edges of CLK & PCM DATA coincident
Output Signal approximately +/-2V, DC coupled
TDM Mode two channel TDM system, set by PCM Encoder module's PCM/TDM Switch
Sequence Generator
Input Clock Range TTL 1Hz to 200kHz
Number of Sequences 2, X and Y
Sequence Lengths X = 31 bits, Y = 255 bits
Sync indicates start of sequence X
Speech
Microphone electret-type with frequency response of 500Hz to 3kHz
Output typically 0.2Vrms
MANUAL/PC-CONTROL MODES
All front panel controls can be varied either manually or via PC-control.
PC-control can only be implemented by NI LabVIEW and DAQmx interface via NI ELVIS edge connector
PC-control software interfaces:
FOTEx SFP, FOTEx Toolbar SFP and FOTEx low level VIs
STANDARD ACCESSORIES
Patch Cords 20 x 2mm-2mm stackable patch cords
Scope leads 3 x 2mm-to-BNC coaxial oscilloscope leads
DMM leads 2 x 2mm-to-4mm patch cords
Fiber Optic Patch Cord Short 6 x 50cm Fiber Patch Cord
Fiber Optic Patch Cord Long 1 x 100cm Fiber Patch Cord
Fiber Optic Bulkhead Connector 2 x Bulkhead connectors
Headphones 1 x lightweight stereo headphones, 24ohm, 3.5mm male stereo plug
Documentation 1 x User Manual; 1 x Experiment Manual
Software FOTEx Manuals in soft format
COMMON ELECTRICAL SPECIFICATIONS
Input impedance: typically 50kohm
Output impedances:
Analog signals: 330 ohm
Digital signals: 1k ohm
Maximum allowable input voltage: +/- 12V
Maximum output voltage: +/- 12V
COMMON OPTICAL SPECIFICATIONS
Fiber Optic Connector System single way, 'dnp' (dry non-polish) system
Fiber Optic Cable 1000um, polymer, single core fiber optic cable, sheathed in polyethylene
Fiber Optic Cable Minimum Bend Radius 100mm
Fiber Optic Cable Attenuation typically 200dB/km at 665nm and 1500dB at 820nm
POWER SUPPLY
Power Source supplied via NI ELVIS edge connector
+5, +15, -15 rails consume <200mA each
ENVIRONMENTAL
Operating Temperature Range 10 to 30 degrees C
Storage Temperature Range 5 to 40 degrees C
Humidity up to 90% RH, non-condensing
PHYSICAL
Dimensions front panel 280 x 215mm;