80/81 Function Pulse Generators

These products are discontinued.

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): < 8 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

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

Phaselock Operation
Phaselock Operation	Output waveform locks to frequency and phase of external signal. Phase may be offset.
Impedance	10 kO ± 5%
Min Pulse Width	10ns
Locking Range	10 Hz to 60 MHz
Phase Offset (10 Hz to 19.99 MHz)	Continuously adjustable from -180º to +180º
Resolution	1º
Accuracy (1O Hz to 100 kHz)	3º + 3% of reading

General Specifications

Remote Operation

GPIB interface is standard on Models 80 and 81. HP8116A emulation mode (Model 81 only)

Environment

Operating 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 life

115/230 Vac, optional 100V, 50 or 60 Hz, 60 W max

Stored Set-ups

Complete sets of front-panel set-ups stored: 30

Size

8.9 cm (3.5 in) high x 21.1 cm (8.3 in) wide x 39.1 cm (15.4 in) deep

Rack Mount Dimensions

Single:	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

Weight

6 kg (12 lb)

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

Product Manuals
80/81 Function Generators Getting Started Manual (209.87 KB)

Data Sheets
80/81 Function Pulse Generators Data Sheet (78.51 KB)

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80/81 Function Pulse Generators

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