80/81 Function Pulse Generators

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Discontinued
This product is discontinued or reclassified

Product overview: 80/81 Function Pulse Generators

80 Function generator
Model 80 provides Sweep and FM. In addition, the 80 offers linear and logarithmic sweep functions and external FM. This makes the 80 an extremely versatile low-cost function generator.

81 Pulse/function generator
With programmable pulse period, width, and transition times combined with the function generator features common to the 80 family, the 81 provides an impressive set of capabilities for both analog and digital applications.

Store common setups
Both the 80 and 81 stores 30 complete front panel setups, allowing easy recall of test setups.

Remote operation
Model 80 and 81 include an IEEE-488.2 (GPIB) interface as standard.

Autocalibration optimizes performance
Each model has an autocalibration feature that allows the user to ensure maximum accuracy each time the unit is used.

Specifications: 80/81 Function Pulse Generators

Except as noted, specifications apply to Models 80 and 81 Specifications apply after a 20 minute warmup

Standard Waveforms
Standard WaveformsSine, triangle, square, positive and negative pulses, and (Model 80 only) dc
Frequency
Range10 mHz to 50 MHz
Resolution4 digits
Accuracy (Continuous Mode)10 mHz to 999.9 mHz:    ± 3%
1 Hz to 50 MHz: ± 0.1%
Jitter: =0.1% ± 50 ps
Waveform Quality
Harmonic Distortion (Sine)100 mHz to 1 MHz:   < 1% THD
1 MHz to 5 MHz: Max harmonic < -40 dB
5 MHz to 50 MHz:    Max harmonic < -21 dB
Flatness10 mHz to 999.9 kHz:    ± 1%
1 MHz to 9.999 MHz: ± 2% ± 2%
10 MHz to 50 MHz:   -15%
Triangle and Ramp Linearity£5 MHz (10% to 90% of Amplitude): > 99%
Square Rise/Fall Time(10% to 90% of Amplitude): < 8 ns
Square Aberrations< 5%
Pulse & Ramp (Model 81 Only)
Pulse ModesSymmetrical pulse, positive pulse, negative pulse, and the complement to all pulse waveforms
Pulse PeriodRange:  20 ns to 99.99s
Resolution: 4 digits
Accuracy and Jitter:    As for frequency
Pulse WidthRange:  10 ns to 999 ms
Setting Accuracy:   10 ns to 99.9ns: ± (5% + 2 ns)
100 ns to 999 ms: 3% ± (4% + 2 ns)
Resolution: 3 digits
Duty Cycle Range:   1% to 80%. Up to 99% using the complement mode 0 to 5V ± 20% produces > 10% pulse width change from pulse width setting
PWM Range:  dc to 70 kHz
Ramp Modes: Positive or negative going ramp
Ramp PeriodRange:  7 µs to 99.99s
Resolution: 4 digits
Ramp WidthRange:  5 µs to 999 ms
Setting Accuracy (5µs to 999ms):    3%
Resolution: 3 digits
Duty Cycle Range:   1% to 80%
Transition TimesRange:  8 ns to 99.9 ms in six overlapping ranges. Leading and trailing edges are independently programmable
Max Ratio between Ranges:   100 to 1
Accuracy:   8 ns to 99 ns: ± (5% + 2 ns)
Modulation
AM and SCMExternal 0 to 10V produces 0 to 200%
Range:  0 to 200%, reduced to 70% at 1 MHz
Bandwidth:  dc to 50 kHz
VCORange:  4.7V change produces approx 1000:1 frequency change
Bandwidth:  dc to 50 kHz
FM (Model 80 only)Range:  0 to 0.5V change produces 1% deviation
Bandwidth:  dc to 50 kHz
Amplitude
RangeInto 501/2: 10 mV to 16 Vp-p
Into Open Circuit:  20 mV to 32 Vp-p
Resolution: 3 digits
Accuracy (at 1 kHz):    ± 4 % reading
DC Offset
DC OffsetOffset and amplitude are independently adjustable within two windows:
-800 mV to +800 mV
-8V to +8V
Range± 800 mV Window:    ± 795 mV
± 8V Window:    ± 7.95V
Resolution3 digits
Accuracy (At 1 kHz)± 800 mV Window ± (1% of setting + 1% of amplitude + 0.2 mV)
± 8V Window:    ± (1% of setting + 1% of amplitude + 2 mV)
Main Output
ModesNormal (on) or disabled (off)
Impedance50O ± 1%
Output ProtectionProtected against continuous short to chassis ground
Sync Output
Level (Into 50O)0 to 1V
Rise/Fall Time< 3 ns
Operating Modes
Operating ModesContinuous, triggered, phaselock, start phase, and (Model 80 only) sweep
Sweep Operation (80 Only)
ModesSweep may be continuous or triggered by any trigger mode
Sweep SpacingLinear and logarithmic
Sweep DirectionsUp, down, up-down, and down-up
Sweep RangeLog:    10 decades max
Linear: 3 decades max
Sweep RateLog:    10 ms to 999s per decade
Linear: 10 ms to 999s
Sweep Out0 to 5V ramp proportional to frequency at rear panel BNC
Marker Output:  Output signals when marker frequency is reached
Triggered Operation
ModesSingle shot, gated, and burst
SourcesManual (front panel key), internal trigger rate generator, and external signal input
TriggeredFor each trigger, one output cycle is generated
GatedContinuous waveform cycles are generated for the duration of the active portion of the trigger signal. Last cycle is always completed
BurstPreset number of waveform cycles are generated by a trigger: 1 to 4,000
Manual TriggerKey provides trigger signal
Internal Trigger Rate Generator1 mHz to 50 kHz
External InputVia Trig Input BNC
Impedance:10 kO ± 5%
Sensitivity:500 mVp-p
Max Input Voltage± 20V
Min Pulse Width20 ns
Max Frequency:50 MHz
SlopePositive or negative going leading edges
Trigger Level:Variable -10V to +10V
Start Phase of Triggered WaveformTo 500 kHz: Adjustable from -90º to +90º.
From 500.1 kHz to 50 MHz:   Adjustable range proportionally reduced as frequency increases
Accuracy (to 500 kHz):  ± 3º
Phaselock Operation
Phaselock OperationOutput waveform locks to frequency and phase of external signal. Phase may be offset.
Impedance10 kO ± 5%
Min Pulse Width10ns
Locking Range10 Hz to 60 MHz
Phase Offset (10 Hz to 19.99 MHz)Continuously adjustable from -180º to +180º
Resolution
Accuracy (1O Hz to 100 kHz)3º + 3% of reading
General Specifications
Remote OperationGPIB interface is standard on Models 80 and 81. HP8116A emulation mode (Model 81 only)
EnvironmentOperating Temperature:  0º to 50ºC, ambient
For Specified Accuracy: Within ± 5ºC and 24 hours of last internal calibration
Storage Temperature:    -40º to +70ºC
Humidity:   80% R.H.
Power, battery life115/230 Vac, optional 100V, 50 or 60 Hz, 60 W max
Stored Set-upsComplete sets of front-panel set-ups stored: 30
Size8.9 cm (3.5 in) high x 21.1 cm (8.3 in) wide x 39.1 cm (15.4 in) deep
Rack Mount DimensionsSingle: 8.9 cm (3.5 in.) H x 48.3 cm (19 in.) W
Dual:   13.3 cm (5.25 in) H x 48.3 cm (19 in) W
Weight6 kg (12 lb)

Models: 80/81 Function Pulse Generators

Model 80
50 MHz Function Generator

Model 81
50 MHz Function/Pulse Generator

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