Agilent 81180A Arbitrary Waveform Generator: Data Sheet 1.0
Agilent 81180A Arbitrary Waveform Generator: Data Sheet 1.0
Data Sheet
1.0
2
The 81180A arbitrary waveform
generator offers convenient features
that make your test easier
Back panel
Internal and external clock
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Overcome your test challenges
with the 81180A arbitrary waveform
generator
Electronic devices continue to grow increasingly complex,
and the demand for higher performance never ends. In
addition, you are under pressure to reduce test times and
tighten specifications.
To meet these challenges,
you need new test tools.
The complexity of modern wireless systems skyrockets
when you use techniques like digital modulation that
compress wireless data to use bandwidth more efficiently.
Test accuracy and repeatability are critical. In radar
applications, a higher range helps you detect targets
further out, and increased accuracy helps you better track
targets. Range is proportional to the length of a pulse, so
parameters like pulse length and pulse repetition frequency
influence the radar range and range resolution. You need
to be able to verify the performance of your radar system.
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Use models of 81180A
In this setup, the 81180A is used as a 2-GHz IQ modulation markers don’t reduce the number of bits, so using markers
source. The Agilent E8267D performance signal generator improves waveform resolution instead of reducing it.
Option 016 is needed for the 2 GHz IQ modulation input.
You can use markers in conjunction with the pulse You can use the 81180A for generating direct RF signals up
modulation to suppress the signal in the pulse pauses. The to 1.5 GHz with a good signal waveform resolution.
Modulation BW up to 2 GHz
RF up to 44 GHz
Marker Out Pulse mod. input
I/Q data via LAN,
USB or GPIB
RF up to 1.5 GHz
Modulation BW =
1.5 GHz-carrier frequency
I/Q data via LAN,
USB or GPIB
RF/IF out
81180A
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Choose the best amplifier to optimize your signal characteristics
Figure 7.
Different applications call for different signal characteristics. You can choose from three different amplifiers with different
characteristics. You can switch between the amplifiers using your software application, the programming interface or the
instrument’s front panel.
Bandwidth (MHz)
1600
1400
1 GHz per channel
Optimized for for = 2 GHz I/Q modulation BW
1200
direct
RF/IF applications
1000
Optimized for
-5 dBm to +5 dBm purest signal in I/Q
800 single-ended output; applications
AC coupled;
with a vector PSG
600 flatness: ±1 dB
up to 1 GHz Optimized for time
Up to 500 mVpp domain applications
400 differential output;
DC coupled; Up to 2 Vpp amplitude,
200 harmonic distortions1 ± 1.5 V offset differential
less than -56 dBc output; DC coupled;
0 SFDR less than -64 dBc 600 ps transition times
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Increase your signal play time with
advanced sequencing
The closer your test signals are to the real-world situation, memory sizes: 16 MSa and 64 MSa. For the best memory
the better your test results will be. A key requirement usage, a sequencer helps you create versatile, unique
is long signal play time, which means you need a big signals.
memory. The 81180A offers the choice between two
Loop 1 time Loop 5,200 times Loop 1 time Loop 3,567 times
Loop 5 times
Figure 9. Agilent 81180A sequence example
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Create complex signals in a variety
of software environments
You can easily set up simple waveforms like sine waves, pulses, or ramps from the front panel of the 81180A. Complex
modulation or arbitrary waveforms require waveform creation tools to create realistic signals.
Figure 11.
You can choose between tools like MATLAB software, With the optional BenchLink Waveform Builder Pro you
NI LabVIEW and Visual Studio with IVI or Agilent can simply create custom, user-defined waveforms and
waveform creation tools like Agilent BenchLink Waveform import other waveforms from MATLAB and oscilloscopes
Builder Pro, Signal Studio (planned) and Agilent wideband measurements.
waveform creator.
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MATLAB scipt examples are available on www.agilent.com/find/81180_demo and will give you a jumpstart to generate
multi-tone signals, pulsed radar signals and multi-carrier modulated waveforms using the 81180 – standalone or in
conjunction with a Vector PSG.
Figure 13. Radar pulse with 2 GHz bandwidth. Radar pulse with
2 GHz bandwidth
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Electrical Specifications
Instrument configuration
Characteristics Description
81180A 4.2-GSa/s arbitrary waveform generator with three output paths, DC-coupled direct DAC
output with 1 GHz bandwidth, DC-coupled 2-V amplifier with > 600 MHz analog bandwidth
or, AC-coupled 5 dBm amplifier with 1.5 GHz analog bandwidth
81180A-116 Single-channel instrument with 16,000,000 waveform points
81180A-216 Dual-channel instrument with 16,000,000 waveform points
81180A-264 Dual-channel instrument with 64,000,000 waveform points
81180A-F4G Reconstruction filter
81180A-1CN Rack mounting kit assembly
81180A-SYN Synchronization cable to synchronize two dual-channel 81180As to form a four-channel
4.2-GSa/s arbitrary waveform generator system
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Waveform type
Characteristics Description
Standard A waveform is selected from a built-in library. The standard waveform parameters are
programmable.
Arbitrary Arbitrary waveform coordinates are downloaded and stored in memory segments. The
arbitrary waveform parameters are programmable.
Sequenced Arbitrary waveforms are downloaded and stored in memory segments. The segments
are arranged in a sequence table that step, loop, jump and nest on segments in a user-
defined configuration. Conditional jump and nest pending an event signal.
Advanced sequences Same functionality as described for sequenced waveforms except sequences are arranged
in the sequence table.
Modulated A modulated waveform is calculated from a built-in library of modulation schemes.
Pulse A pulse waveform is calculated and downloaded to the arbitrary waveform memory.
Run mode
Characteristics Description
Continuous
Self armed A selected output function shape is output continuously. No start commands are
required to generate waveforms.
Armed No start commands are required to generate waveforms.
Triggered A trigger signal activates a single-shot or counted burst of output waveforms and then
the instrument waits for the next trigger signal.
Normal mode The first trigger signal activates the output; consecutive triggers are ignored for the
duration of the output waveform.
Override mode The first trigger signal activates the output; consecutive triggers restart the output
waveform whether the current waveform has been completed or not.
Gated A waveform is output when a gate signal is asserted. The waveform is repeated until
the gate signal is de-asserted. Last period is always completed.
Standard waveforms
Characteristics Description
General Waveforms are computed and generated every time a standard waveform is selected.
Standard waveform library Built-in, auto computed waveforms: sine, triangle, square, ramp, pulse, sink,
exponential rise, exponential decay, Gaussian, noise and DC.
Standard waveform control The standard waveform parameters can be adjusted to specific requirements. The
waveform is recomputed with each parameter change.
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Standard waveforms frequency control
Characteristics Description
Range 10 kHz to 250 MHz
Resolution 8 digits
Accuracy
Internal reference ≤ 1 ppm from 19 ºC to 29 ºC; 1 ppm/ºC below 19 ºC or above 29 ºC; ≤ 1 ppm/year aging rate
External reference Same as accuracy and stability of the external reference. Reference is applied to the
reference input.
Arbitrary waveforms
Characteristics Description
General Arbitrary waveforms are created on a remote computer and downloaded to the
arbitrary waveform memory through one of the available remote interfaces. The
frequency of the waveform is calculated from its programmed sample clock value and
the number of waveform points that were used for creating the waveform.
Waveform length 320 to 16,000,000 points (320 to 64,000,000 with Option (264), in multiples of 32 points
Number of waveforms 1 to 16,000
Dynamic waveform control Software command or rear-panel segment control input (D-sub, 8-bit lines)
Waveform jump timing Coherent or asynchronous, selectable
DAC resolution 12 bits
Sequenced waveforms
Characteristics Description
General Segments are grouped in a sequence table that links, loops and jumps to next in user-
defined scenarios. Sequence steps are advanced on trigger events or remote commands.
Each channel has its own sequence scenario.
Sequence scenario 1 to 1,000 unique scenarios, programmed in sequence tables
Sequence table length 1 to 16k steps
Step advance control Auto, once (x “N”) and stepped
Loop counter
Segment loops 1 to 1,000,000 cycles, each segment
Sequence loops 1 to 1,000,000 (applies to “Once” sequence advance mode only)
Accuracy 10 ps
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Advanced sequencing
Characteristics Description
General Enables the grouping of sequences into scenarios in a way that is similar to how
segments are grouped in a sequence table. Each channel has its own advance
sequencing generator.
ASequence scenario 1 scenario, programmed in advanced sequence table
Dynamic advance sequence Software command or rear panel sequence control input (D-sub, 8-bit lines)
control
ASequence table length 1 to 1k steps
Step advance control Auto, once and stepped
Once loop counter 1 to 1,000,000 cycles, each sequence
Analog outputs
Characteristics Description
General DC-coupled amplified or direct DAC or AC-coupled amplified output, selectable
Connector type SMA
On/off control Output is turned on or off for each channel independently
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DC-analog outputs
Description
Characteristics Amplified output Direct DAC output
Type of output Single-ended ¹ or differential Single-ended ¹ or differential
Impedance 50 Ω, typical 50 Ω, typical
Amplitude control Specified into 50 Ω, levels double into high Specified into 50 Ω, levels double into high
impedance impedance
Range, single-ended 50 mVp-p to 2 Vp-p 50 mVp-p to 500 mVp-p
Range, differential 100 mVp-p to 4 Vp-p 100 mVp-p to 1Vp-p
Resolution 3 digits 3 digits
Accuracy, offset = 0 V ± (3% +5 mV) ± (3% +5 mV)
Offset control Common mode, specified into 50 Ω, levels Common mode, specified into 50 Ω, levels
double into high impedance double into high impedance
Range -1.5 V to + 1.5 V -1.5 V to + 1.5 V
Resolution 3 digits 3 digits
Accuracy ± (5% +5 mV) ± (5% +5 mV)
Rise/fall time (10% to 90%) 600 ps, typical 350 ps, typical
Bandwidth 600 MHz, typical (calculated 1 GHz, typical (calculated)
Overshoot 5%, typical 15%, typical
Harmonic distortion ² -49 dBc, 1 Vp-p -56 dBc, 0.5 Vp-p
Non harmonic distortion ² -69 dBC, 1 Vpp, DC to 600 MHz -64 dBc, 0.5 Vp-p, DC to 1 GHz
SCLK/2 spur ³ 1 Vp-p 0.5 Vp-p amplitude
200 MHz -42 dBc -63 dBc
500 MHz -40 dBc -63 dBc
800 MHz -36 dBc -63 dBc
SCLK/2-fout spur ³ 1 Vp-p 0.5 Vp-p
200 MHz -45 dBc -67 dBc
500 MHz -42 dBc -67 dBc
800 MHz -37 dBc -55 dBc
Phase Noise ² -90 dBc/Hz, 1 Vp-p, 10 kHz offset -90 dBc/Hz, 1 Vp-p, 10 kHz offset
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RF, AC-coupled analog output
Characteristics Description
Type of output Single-ended ¹
Impedance 50 Ω ¹, typical
Amplitude control Specified into 50 Ω, levels double into high impedance
Range -5 dBm to 5 dBm
Resolution 3 digits
Accuracy ±(3% +0.5 dBm)
Bandwidth 1.5 GHz, typical
Flatness ±1 dB 4 MHz to 1 GHz, ±2 dB to 1.5 GHz, typical
Harmonic distortion ² -50 dBc
Nonharmonic distortion ² -58 dBc, DC to 1.5 GHz
SCLK/2 spur ³
200 MHz -68 dBc
500 MHz -68 dBc
800 MHz -68 dBc
SCLK/2-fout spur ³
200 MHz -68 dBc
500 MHz -68 dBc
800 MHz -60 dBc
Phase noise ² -90 dBc/Hz, 10 kHz offset
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Marker outputs
Characteristics Description
Connector type SMB
Number of markers Two markers per channel
Type of output Differential (+) and (-) outputs
Impedance 50 Ω, typical
Level control Specified into 50 Ω, levels double into high impedance
Voltage window 0 V to 1.25 V, single-ended; 0 V to 2.5 V, differential
Low level 0 V to 0.8 V, single-ended; 0 V to 1.6 V, differential
High level 0.5 V to 1.25 V, single-ended; 1 V to 2.5 V, differential
Resolution 10 mV
Accuracy 10% of setting
Width control 0 SCLK periods to segment length
Position control 0 to segment length in 4 point increments
Marker resolution 4 SCLK periods (programmed as part of the output waveform)
Initial delay 1) 3.5 ns, +1 sample clock period, typical
Initial skew between marker < 100 ps, typical
1 and marker 2
Variable delay control Separate for each marker
Range 0 to 3 ns
Resolution 10 ps
Accuracy ± (10% of setting +20 ps)
Rise/fall time 1.0 ns, typical
SYNC output
Characteristics Description
Connector type SMA
Type of output Single ended
Source Channel 1 or channel 2
Waveform Pulse (32 points width), WCOM (waveform duration pulse)
Impedance 50 Ω, typical
Amplitude 1.2 V, typical; doubles into high impedance
Variable position control
Range 0 to segment length
Resolution 32 points
Rise/fall time 2 ns, typical
Variable width control
Range 32 points to segment length
Resolution 32 points
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Trigger input
Characteristics Description
Connector type SMA
Drive Channel 1, channel 2, or both
Input impedance 10 kΩ, typical
Polarity Positive, negative, or both, selectable
Damage level ± 20 Vdc
Frequency range 0 to 15 MHz
Trigger level control
Range -5 V to 5 V
Resolution 12 bit (2.5 mV)
Accuracy ± (5% of setting + 2.5 mV)
Sensitivity 200 mVp-p
Pulse width, minimum 10 ns
System delay 200 sample clock periods + 50 ns, typical
Trigger delay Separate for each channel
Range 0 to 8,000,000 sample clock periods
Resolution 8 points
Accuracy Same as sample clock accuracy
Smart trigger Detects a unique pulse width range
Conditioned trigger < pulse width, > pulse width, <> pulse width
Pulse width range 50 ns to 2 s
Resolution 2 ns
Accuracy ± (5% of setting +20 ns)
Trigger holdoff Ignores triggers for a holdoff duration
Holdoff range 100 ns to 2 s
Resolution 2 ns
Accuracy ± (5% of setting +20 ns)
Trigger jitter 8 sampling periods
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Event input
Characteristics Description
General Used for branching in or out from a sequence loop. Also used for enabling or disabling the
output in armed mode.
Connector type Rear panel BNC
Input impedance 10 kΩ, typical
Polarity Positive, negative or either, selectable
Damage level ± 20 Vdc
Frequency range 0 to 15 MHz
Trigger level control
Range -5 V to 5 V
Resolution 12 bit (2.5 mV)
Accuracy ± (5% of setting + 2.5 mV)
Sensitivity 200 mVp-p
Pulse width, minimum 10 ns
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External sample clock input
Characteristics Description
General External signal is fed to a frequency splitter. Same frequency is applied to both channels.
Connector type Rear-panel SMA
Input impedance 50 Ω, typical
Input voltage swing 0 dBm to 10 dBm
Input frequency range 2.0 GHz to 4.2 GHz
Clock divider 1/1, 1/2, 1/4, … 1/ 256, separate for each channel
Damage level 15 dBm
Two-instrument synchronization
Characteristics Description
General Two instruments are synchronized via dedicated synchronization cable.
Master instrument controls waveform generation of slave instrument.
Initial skew between 20 ns + 0 to 16 SCLK periods
instruments
Offset control 8 SCLK periods increments
Clock source Master sample clock generator
Trigger source Master trigger input
Display
Characteristics Description
Type TFT LCD, back-lit
Size 4“
Resolution 320 x 240 pixels
Peripheral devices
Characteristics Description
USB port 1 x front, USB host, standard A; 1 x rear, USB device, standard B
LAN port 1000/100/10 BASE-T
GPIB port IEEE 488.2 standard interface, 24 pin
Segment control port 2 x D-sub, 9 pin
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Power supply
Characteristics Description
Source voltage and
frequency
Rating range 100 VAC to 240 VAC
Frequency range 50 Hz to 60 Hz
Power consumption 100 VA
Mechanical
Characteristics Description
Dimensions
With feet 315 x 102 x 395 mm (W x H x D)
Without feet 315 x 88 x 395 mm (W x H x D)
Weight
Without package 4.5 kg
Shipping weight 6 kg
Environmental
Characteristics Description
Operating temperature 0 ºC to 40 ºC
Storage temperature -40 ºC to 70 ºC
Humidity 85% RH, non condensing
Maintenance
Characteristics Description
General Periodic recalibration is required to maintain accuracy of output characteristics
Recalibration period 2 years
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Related literature / Pub. No. www.agilent.com
Best memory usage for real-world signals – Understanding
Sequence Run and Sequence Advance Modes 5990-5965EN
www.agilent.com/find/81180
MATLAB examples:
www.agilent.com/find/81180_demo
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