Atec AWG2021 User Manual
Features & Benefits
250 MS/s Clock Rate
Provides up to 125 MHz
Waveforms
256 k Memory Depth
12-Bit Vertical Resolution
Direct DSO
Waveform Transfers
Region Shift Function
Provides 4 ps Edge
Placement
Optional 12-Bit 250 MHz
(ECL) or 12/24-Bit 100 MHz
(TTL) Digital Data Generator
Built-in 1.4 MB, 3.5 in.
Floppy Disk
FFT Frequency Domain
Editor (Opt. 09)
Real-time Waveform
Sequencer to Easily Create
Automatic Test Sequences
and Extremely Long Patterns
Formula Entry of Waveforms
Channel Summing
(with Opt. 02)
Fully Programmable from
Front Panel, RS-232 and
GPIB (IEEE-488.2)
Applications
Analog and Digital Modulation
Wireless Communication
All Forms of Fading Simulation
Navigation
I and Q Impairment
Audio
Computer Peripherals
Automotive
D/A and A/D
Converter Testing
Filter Design
Semiconductor Logic
(ASIC/DSP/FPGA)
CCD, LCD
Arbitrary Waveform Generator
AWG2021
AWG2021.
Arbitrary Waveform Generators
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www.tektronix.com/signal_sources
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The AWG2021 offers 250 MS/s and 256 k
deep memory. As with the entire AWG2000
Series, the graphical user interface allows
on-screen viewing of waveform editing, sim-
plifying “what if” test scenarios by allowing
the easy creation of composite signals.
The standard AWG2021configuration pro-
vides one 5 V output or a second independ-
ent 5V output (Opt. 02) each with 12-Bit
vertical resolution. Frequency of channel 2
is also independently programmable.
Option 03 adds a 12-Bit wide differential
ECL digital port which can be used in con-
junction with the marker outputs for data
generation up to 14 Bits wide at up to
250 MHz. Or if you prefer, Option 04 provides
TTL digital levels with up to two 12-Bit,
100 MS/s ports for a total of 28 Bits wide.
The built-in frequency domain (FFT) editor
(Opt. 09) is a perfect addition for customers
performing proprietary or standard modula-
tion simulations, filter design or in physical
layer testing. Real-time waveform sequencing
extends the effective record length output
to over a billion points!
The AWG2021 easily simulates signals
where moderate point definition and long
records are required for simulating very
complex waveform conditions. Direct wave-
form transfer capability makes the AWG2021
the perfect complement to selected
Tektronix oscilloscopes.
Arbitrary Waveform Generators
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www.tektronix.com/signal_sources
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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 trigger 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; aberrations, 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;
5V
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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