Atec Tektronix-AWG2021 Manuel d'utilisateur télécharger pdf (Page 2)

Arbitrary Waveform Generators

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Arbitrary Waveform Generator

AWG2021

Characteristics

Standard Waveshapes

Sine, square, triangle, ramp, pulse, arbitrary, linked

sequence and DC.

Arbitrary Waveforms

Execution Memory –

Waveform: 256 Kwords.

Marker: 256 Kwords x 2 Bits.

Data Points of Waveform Size: 64 to 256 K

in multiples of 8.

Real-time Sequencer Memory –

8 K individual waveforms.

Loop Counter: 1 to 65,535 repeats.

Burst Mode Counter: 1 to 64 K cycles.

Catalog Memory Clock

Frequency Range – 10 Hz to 250 MHz.

Resolution – 4 digit.

Accuracy – 50 ppm (+15 ºC to +30 ºC).

Skew between CH. 1 and CH. 2 (Opt. 02 only) –

Within 4 ns.

Operating Modes

Continuous – Output continuous at programmed

waveshape, frequency, amplitude and offset.

Triggered – Output quiescent until triggered by

an external, GPIB or manual trigger; then generates

a sequence only one time.

Gated – Same as triggered mode except period is

executed only for the duration of the gated signal

until the sequence started is completed.

Burst – Output quiescent until triggered by an

external, GPIB or manual trigger; then generates

“n” sequences or cycles.

Waveform Advance – Continuously generates the

waveform in a predefined sequence; the next trig-

ger advances to the next waveform in sequence.

Autostep – Generates the predefined waveform

once in the Autostep File; the next trigger advances

the waveform.

Main Output

Amplitude (Excluding ADD and Multiply

Operation) –

Digital-to-Analog Resolution: 1/4096 (12-Bit).

Range: 0.05 V to 5 V

p-p

into 50 Ω DC.

Accuracy: 0.05 V to 0.5 V, ±(0.5% of amplitude

+5 mV); 0.501 V to 5 V, ±(1% of amplitude

+25 mV).

Offset –

Range: –2.5 V to +2.5 V into 50 Ω, (–100 mA to

+100 mA).

Resolution: 0.2 mA.

Accuracy: ±(1% of offset +0.2 mA).

Pulse Response –

15 ºC to +30 ºC: Flatness, within 3% after 20 ns

from rise/fall edges; Aberrations, within 7% +10 mV.

+10 ºC to +40 ºC: Rise/Fall time, <4.2 ns; flatness,

within 5% after 20 ns from rise/fall edges; aberra-

tions, within 9% +10 mV.

Impedance – Typically 50 Ω.

Sinewave (Amplitude 1 V, 100 kHz Reference) –

Flatness: Within 4%.

THD: 1.0 V, ≤50 dBc, 0.5 V, ≤66 dBc.

Spurious: ≤66 dBc.

Channel Summing

(Opt. 02 only)

AM (Multiply) –

Output: Within 5%.

Frequency Response: DC to 30 MHz.

External AM –

Sensitivity: 2 V

p-p

(±5%) signal produces

100% modulation.

Frequency Response: CH 1, DC to 30 MHz;

Ext. Signal, DC to 4 MHz.

Add –

Output: Within 5%.

Frequency Response: DC to 30 MHz.

Filters

3 dB Cutoff Frequency –

1 MHz: Within 20%.

5 MHz: Within 20%.

20 MHz: Within 20%.

50 MHz: Within 20%.

Delay –

1 MHz: Typically 390 ns.

5 MHz: Typically 78 ns.

20 MHz: Typically 18 ns.

50 MHz: Typically 11 ns.

Auxiliary Outputs

Markers 1 and 2 –

Amplitude:

Marker 1 >1.2 V into 50 Ω, >2.4 V into

open circuit.

Marker 2 >1.2 V into 50 Ω, >2.4 V into

open circuit.

Impedance: 50 Ω.

Marker to Signal Delay: Within 15 ns.

Sync –

Amplitude: >1.2 V into 50 Ω, >2.4 V into

open circuit.

Impedance: 50 Ω.

Sync to Signal Delay: Within 15 ns.

Clock –

Amplitude: 1 V ±0.3 V into 50 Ω.

Impedance: 50 Ω.

Digital Data Out (Opt. 03, eliminates RS-232

Interface) –

Level: Differential ECL compatible.

Output Signals: Data (D0 to D11).

Skew Between Data: Within 1 ns.

Clock to Data Delay: Within 3 ns.

Connector: 68-Pin mini-D sub.

Auxiliary Inputs

Trigger –

Threshold Level: –5 V to +5 V.

Resolution: 0.1 V.

Accuracy: ±(5% x Level + 0.1 V).

Pulse Width: 15 ns minimum.

Input Swing: 0.2 V minimum.

Maximum Input Volts: 10 V

p-p

when 1 MΩ selected;

RMS

when 50 Ω selected.

Impedance: 1 MΩ with 30 pF max.

Trigger to Output Signal Delay: External clock,

100 ns maximum +1 clock.

Trigger Holdoff – 5µs maximum.

AM (Opt. 02 only) –

Range: 2 V

p-p

(–1 V to +1 V) for 100% modulation.

Maximum Input: ±5 V

p-p

,10kΩ impedance.

System Clock –

Threshold Level: 0.3 V ±0.1 V.

Input Swing: 0.8 V minimum.

Pulse Width: 2 ns minimum.

Maximum Input Voltage: ±2 V

p-p

Impedance: 50 Ω.

Frequency Range: Up to 250 MHz phase coherent.

Programmable Interface

GPIB – IEEE 488.2-1987 compatible.

RS-232 – 9-Pin D connector.

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Atec Tektronix-AWG2021 Manuel d'utilisateur Page 2

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