Archived: Emona ETT-202 DATEx Specifications

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Technical specifications for the EMONA ETT-202 DATEx add-in board for the NI ELVIS platform.


NI ELVIS Functions

NI ELVIS Platform functions available at the ETT-202 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;


Analog I/O:

Inputs ACH0 and ACH1

Outputs DAC0 and DAC1

Variable Power Supplies:

Outputs "+" and "-"

ETT-202 Functional Modeling Blocks

Adder 1:

Dual input

Variable gain from 0 to 2 (inverting)

Bandwidth approx. 600kHz

Adder 2:

Dual input

Fixed gain of 1

Bandwidth approx. 600kHz


Bandwidth: DC to approx. 600kHz

Gain: 0.2 to 10

Channel Module:


Fcenter = 100kHz;

Passband = 24kHz; (from 88 kHz & 112 kHz)

Stopband = 140kHz, -35dB (approximately at 30kHz & 170kHz);

Gain = 1;

Type: 6th order Chebychev with 0.1dB ripple


Fcut-off = 1.6 kHz;

Gain = 0.9;

Type: 4th order Butterworth

Dual Analog Switch & Sample/Hold

Analog Input Bandwidth 50kHz

Maximum CONTROL clock 100kHz

CONTROL Input Levels digital-level only, 0V and 5V

Maximum Analog Input Level 4Vpk-pk

Headphone Amplifier

Output power 125mW, stereo socket

Headphone Type and Connector 3.5mm stereo, > 8ohm impedance

Line Code Encoder

Input data from SEQUENCE GENERATOR “X” data sequence

CLK same digital-level clock as SEQUENCE GENERATOR CLK signal,

fmax > 100kHz

Line codes: NRZ-L, RZ-AMI, Bi-phase, NRZ-M

Output LINE-CODE signal +/-2Vp-p

Master Signals:

Output Frequencies carrier: 100kHz in quadrature and a third digital signal

sample clock 8.333kHz (sub-multiple of the carrier)

message: 2.083kHz sinusoidal and digital,

Output Levels 4V pk-pk, analog (+/- 5%)

Digital level, 0V to 5V


3 independent dual input multipliers

Bandwidth approx 600kHz

Characteristic k.X(t).Y(t)

k approx 1

Noise Generator:

Bandwidth 10Hz to < 240kHz, "white" noise

Maximum level approx 4.8Vrms

Attenuator steps 0dB (approx 4.8Vrms), -6dB (approx 2.4Vrms)

and -20dB (approx 0.48Vrms)

PCM Encoder:

Input Vin +/-2Vpk, DC coupled

Bit Clock Input >128kHz, digital-level

Output Signal serial, digital-level data stream in offset binary format

Output Format 8 bits data

Frame Synchronization FS synchronization signal coincident with frame’s LSB

TDM Mode two input Time Division Multiplex system

No anti-aliasing filters

PCM Decoder:

Input PCM DATA serial, digital-level data stream in offset binary format

Input Format 8 bits

Bit Clock Input <128kHz, digital-level;

Output Signal approximately +/-2Vpk, DC coupled

TDM Mode two channel TDM system

Outputs do no include reconstruction filters

Phase Shifter:

Bandwidth > 200kHz

Frequency Ranges two regions

HI approx. 100kHz;

LO approx. 2kHz

Auto detect HI/LO boundary approx. 40kHz

Sequence Generator:

Input Clock Range TTL 1Hz to 100kHz

Number of Sequences 2: X and Y

Sequence Lengths X = 31 bits, Y = 255 bits

Sync indicates start of sequence X

Serial to Parallel:

Inputs SERIAL digital-level data;

CLK is the digital-level clock signal;

Maximum CLK Rate approx 100kHz

Outputs bipolar parallel data output


Microphone electret-type with frequency response of 300Hz to 3kHz

Output typically 0.6 Vrms

Tunable LPF

Filter Range 600 Hz to 12 kHz

Filter Order 8th order, Elliptic

Stopband Attenuation > -50dB at 1.4 fc and Passband Ripple < 0.5dB

Gain Control 0 to 1.6

Twin Pulse Generator:

Clock Frequency Range < 8kHz

Pulse WIDTH 5us < tw < 40us

Pulse DELAY Q2-Q1 50us < td < 300us



Operating Range > 100kHz

TTL Output Risetime 500nsec (typically)


Bandwidth DC to 100kHz (approx)


LPF -3dB 2.6kHz (approx)


LPF -3dB 2.6kHz (approx)

System Specifications


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:

DATEx SFP, DATEx Toolbar SFP and DATEx low level VIs


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

Headphones 1 x lightweight stereo headphones,

24ohm, 3.5mm male stereo plug

Documentation 1 x User Manual; 1 x Experiment Manual


Input impedance: 50kohm

Output impedances:

Analog signals: 330 ohm

Digital signals: 47 ohm

Maximum allowable input voltage: +/- 12V

Maximum output voltage : +/- 12V


Power Source supplied via NI ELVIS edge connector

+5, +15, -15 rails consume <200mA each


Operating Temperature Range 10 to 30 degrees C

Storage Temperature Range 5 to 40 degrees C

Humidity up to 90% RH, non-condensing


Dimensions front panel 280 x 215mm;


Additional Resources

Product Page: NI ELVIS II/Emona Telecommunications Bundle
NI ELVIS Telecommunication Education Resource Page

Emona ETT-202 DATEx for NI ELVIS FAQ: Part 1
Emona ETT-202 DATEx for NI ELVIS FAQ: Part 2
Emona ETT-202 DATEx for NI ELVIS FAQ: Part 3