Atec Tektronix-AWG2021 - Manual (Page 2)

Arbitrary Waveform Generators • www.tektronix.com/signal_sources 2
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;
5 V
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 – 5 µs maximum.
AM (Opt. 02 only) –
Range: 2 V
p-p
(–1 V to +1 V) for 100% modulation.
Maximum Input: ±5 V
p-p
, 10 kΩ 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.