80/81 Function Pulse Generators

Ideal for both benchtop and ATE applications, the 80/81 family of 50 MHz waveform generators provides an unmatched combination of features and value

 

50 MHz Function/Pulse Generators

Ideal for both benchtop and ATE applications, the 80/81 family of 50 MHz waveform generators provides an unmatched combination of powerful operating features and great value. Each model generates sine, triangle, square, positive pulse, and negative pulse waveforms from 10 mHz to 50 MHz with up to 16 Vp-p amplitude into 50 Ohm. With many continuous and non-continuous modes from which to choose, Models 80/81 are ideal for a wide range of test applications.
  • Model 81 pulse/function generator
  • Model 80 function generator
  • Powerful performance
  • AM, FM, VCO, and phaselock/offset control modes
  • Automated calibration
  • Ideal for both benchtop and ATE applications
  • HP 8116A emulation mode (81 only)
 

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.

 

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

Standard Waveforms

Standard Waveforms Sine, triangle, square, positive and negative pulses, and (Model 80 only) dc

Frequency

Range 10 mHz to 50 MHz
Resolution 4 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
Flatness
10 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): < 6 ns
Square Aberrations < 5%

Pulse & Ramp (Model 81 Only)

Pulse Modes Symmetrical pulse, positive pulse, negative pulse, and the complement to all pulse waveforms
Pulse Period
Range: 20 ns to 99.99s
Resolution: 4 digits
Accuracy and Jitter: As for frequency
Pulse Width
Range: 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 Period
Range: 7 µs to 99.99s
Resolution: 4 digits
Ramp Width
Range: 5 µs to 999 ms
Setting Accuracy (5µs to 999ms): 3%
Resolution: 3 digits
Duty Cycle Range: 1% to 80%
Transition Times
Range: 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 SCM
External 0 to 10V produces 0 to 200%
Range: 0 to 200%, reduced to 70% at 1 MHz
Bandwidth: dc to 50 kHz
VCO
Range: 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

Range
Into 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 Offset Offset 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
Resolution 3 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

Modes Normal (on) or disabled (off)
Impedance 50O ± 1%
Output Protection Protected against continuous short to chassis ground

Sync Output

Level (Into 50O) 0 to 1V
Rise/Fall Time < 3 ns

Operating Modes

Operating Modes Continuous, triggered, phaselock, start phase, and (Model 80 only) sweep

Sweep Operation (80 Only)

Modes Sweep may be continuous or triggered by any trigger mode
Sweep Spacing Linear and logarithmic
Sweep Directions Up, down, up-down, and down-up
Sweep Range
Log: 10 decades max
Linear: 3 decades max
Sweep Rate
Log: 10 ms to 999s per decade
Linear: 10 ms to 999s
Sweep Out
0 to 5V ramp proportional to frequency at rear panel BNC
Marker Output: Output signals when marker frequency is reached

Triggered Operation

Modes Single shot, gated, and burst
Sources Manual (front panel key), internal trigger rate generator, and external signal input
Triggered For each trigger, one output cycle is generated
Gated Continuous waveform cycles are generated for the duration of the active portion of the trigger signal. Last cycle is always completed
Burst Preset number of waveform cycles are generated by a trigger: 1 to 4,000
Manual Trigger Key provides trigger signal
Internal Trigger Rate Generator 1 mHz to 50 kHz
External Input Via Trig Input BNC
Impedance: 10 kO ± 5%
Sensitivity: 500 mVp-p
Max Input Voltage ± 20V
Min Pulse Width 20 ns
Max Frequency: 50 MHz
Slope Positive or negative going leading edges
Trigger Level: Variable -10V to +10V
Start Phase of Triggered Waveform
To 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
 

 

Model Name

Description

Model 80 50 MHz Function Generator
Model 81 50 MHz Function/Pulse Generator
 

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