Tektronix 492P, 492 Datasheet

go where

you

go with lab quality

spectrum analysis.

492/492P Spectrum Analyzers

Lab quality you can

Fully calibrated in

amplitude and frequency.

Crt readout of parameters.

Reference level, center frequency, vertical scale factor, frequency span, frequency range, resolution bandwidth, and rf attenuation are dis-

played right on the screen for easy reference and

photographic documentation. Convenient bezel identification of crt parameters.

Programmable control settings and signal display information are available via

GPIBinthe492R

80 dB dynamic range.

Wide frequency

kHz

21 GHz internally and to 60 GHz with Tektronix calibrated external

waveguide mixers. Operation to 220 GHz with com-

mercially available external

waveguide mixers.

Automatic modes. Wide range of options.

Goes where you go.

With its portable form factor and single-handle carry, the 492 moves easily around the

lab or systems test area, fits under an airplane seat, or goes out with you on a field call.

Environmentalized per MIL-T-28800B.

range.

get

a handle on.

Tektronix,

Full

programmability.

492P model provides IEEE

488 compatibility via

GPIB

interface bus. Allows full

programming of all signal-

affecting front-panel control

settings and processing of

stored spectrum displays.

Digital

storage and signal

processing.

SAVE

A, B MINUS

MAX HOLD, and AVERAGE

modes. Lets you compare, subtract, save maximum values, or noise average (smooth) your spectrum

SAVE

displays.

Microprocessor aided ease of operation.

Simple three-knob operation performs your measurements quickly and easily:

1-Set

center frequency,

2-Set span/div,

3-Set reference level. Automatic control on most often used functions.

Power-on initiates input

protection and normal

start-up settings.

Input protection.

Freedom from spurious responses.

Internal calibrated

selector available with Op-

tion

01.

Eliminates harmonic

mixing products and im-

ages, and increases

dynamic range for harmonic

YIG

pre-

measurements in the micro-

wave range.

A spectrum analyzer with unmatched

convenience and capability. In one compact package.

Simple to use.

Operation of the 492 is as

easy as 1 (set the input reference level), 2 center frequency), and 3 (set the frequency span).

Most-used functions are

automatically controlled.

Setting the reference level

automatically selects the

proper

gain and rf attenu-

ation. Setting the span/div

automatically selects the

proper resolution and scan time. These preprogrammed controls of interrelated functions save you time and simplify your measurement task.

(set

the

The center frequency con-

trol with constant tuning rate

(CTR) provides smooth fre-

quency adjustment with just

one knob regardless of the

span being used. CTR allows the operator to position a signal more quickly and more precisely than a conventional tuning system.

Digital storage and signal

processing.

Digital storage allows for flicker-free, easy to interpret displays that may be held in

memory as long as instru-

ment power is on. Available as Option 02,

digital storage and signal

processing enhance the 492's performance and ease of operation.

VIEW

VIEWS

Contents of the selected

memory are displayed. All

SAVE A mode.

SAVE A mode — The spectrum stored in memory A is displayed. If

is selected at the same time,

memory A and B are both

displayed simultaneously for

comparison (data viewed in

memory B is updated con-

tinuously).

modes —

VIEWS

mode

stored displays are updated continually (except with

SAVE A mode). A and B

memories can be combined for high resolution (1000

point) storage.

MINUS

SAVE A is automatically ac-

tivated and the algebraic

difference of the continu-

ously updated contents of

memory B and the stored contents of memory A is

displayed. Positive and

negative differences are

displayed above and below

an internally selectable zero

reference screen position.

SAVE

A mode —

MAX

HOLD

mode.

MAX

HOLD mode

—the

memory stores the highest amplitude signal detected

for each frequency display,

allowing you to maintain and

monitor maximum

values.

This feature is especially

useful in measuring signal

drift and stability, in record-

ing peak amplitudes, and in logging the presence of random signals.

AVERAGE mode — Move-

able cursor sets the level of signal peak detection or averaging. All signals above

the cursor are peak de-

tected and then digitally

stored; all signals below the

cursor are averaged before

storage.

Portable form factor.

Compact size and light

weight combine to offer un-

matched portability in a lab-

oratory quality analyzer. The

492 can easily be moved in the design lab or systems

test area — or wherever else you need it. It even fits under

an airplane seat.

Wide frequency range.

The 492 offers unequalled

frequency coverage. From

kHz

220

GHz, with

amplitude calibrated

waveguide mixers to

60 GHz available from Tek-

tronix. A broader range than

any laboratory analyzer and

with the performance you

need to handle tough labo-

ratory measurements.

Wide frequency range.

Programmability/IEEE

(GPIB)

compatibility.

The programmability and

interface bus capability

available with the 492P provide added measurement versatility.

Repetitive or large quantity data collection with consistent and rapid results is

made easy, as is recording

of data in hard copy form.

Automated testing and

monitoring are also possi-

ble. The GPIB interface en-

ables full program control of

front panel settings and of

special modes like

12 dB/div and "smart" func-

tions. When an external

controller is used, auto-

mated data correction and

analysis can enhance re-

sults and make possible

complex measurements

such as total harmonic dis-

tortion and power spectral

density.

Amplitude resolution of

0.25

dB.

High amplitude accuracy is

possible through 0.25 dB

steps, an improvement over

the well-known if substitution technique. Superfine 0.25 dB control increments pro-

vide 0.05 dB per 0.25 dB step accuracy. This per-

formance increase is

achieved without a separate

vernier control.

FINE

492P makes spectrum analysis

automatic. And easy.

Two instruments in one.

The 492P is a fully program-

mable version of the 492

Spectrum Analyzer. It incor-

porates all of the 492's lab

quality performance and

ease of use features when

used as a manual instrument. Push the "Reset to Local"

button and the 492P be-

comes a from the front panel. But, most

important, the 492P opens

the way to automated spec-

trum analysis and documen-

tation via its IEEE-488

interface.

This versatility makes the 492P useful in many applica-

tions in the lab, factory or

field.

492—with

operation

(GPIB)

With or without a controller.

Switches on the rear panel select the mode of operation

as a GPIB instrument. In the

normal TALKER/LISTENER

mode, the 492P listens to and executes commands from a GPIB controller. All important front panel settings can be

TALK ONLY

LISTEN ONLY

EOI————- • '

operated remotely. Some functions are controlled with more detail through the bus than possible from the front

panel. For example, SPAN

can be set with two digit pre-

cision anywhere within the

range of the instrument,

making possible special

spans such a 4.8 kHz per div.

Also, via the GPIB, the vertical scale may be set for 1 to

dB per division in 1 dB incre-

ments. When requested, the 492P will report instrument settings, internal status or

data

For troller is not available, the

492P can be set to the TALK

ONLY

modes.

GPIB ADDRESS

EOI

from its display.

field

use where a con-

or LISTEN ONLY

the

TALK

ONLY

mode, it outputs waveforms

and front panel settings in a fixed format for data logging to a digital tape, such as the Tektronix 4924. In the LISTEN

ONLY

mode,

the

492P

comes a display for waveform data sent on the bus and will

respond to commands for measurement setup.

be-

When used with the Tektronix 4052 Graphic Computing System

controller and 4631 Hard Copy Unit, the 492P can provide test results in both graphic and numeric form for the evaluation of

microwave signal sources.

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