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Test set control

Control of the switches inside the test set and cali-

bration of the test system can be accomplished

from the front panel of the network analyzer—an

external computer is not required. However, the

analyzers are fully programmable for use in auto-

mated test environments.

Measurement

Number of display measurements

Two measurement displays are available, with

independent control of display parameters includ-

ing format type, scale per division, reference level,

reference position, and averaging. The displays can

share network analyzer sweep parameters, or, by

using alternate sweep, each measurement can have

independent sweep parameters including frequen-

cy settings, IF bandwidth, power level, and number

of trace points. The instrument can display a single

measurement, or dual measurements on a split

(two graticules) or overlaid (one graticule) screen.

Measurement choices

• Narrowband

ET models: reflection (A/R), transmission (B/R),

A, B, R

ES models: S

(A/R), S

(B/R), S

(B/R),

(A/R), A, B, R

• Broadband

X, Y, Y/X, X/Y, Y/R*, power (B*, R*), conversion

loss

(B*/R*)

Note: X and Y denote external broadband-detec-

tor inputs; * denotes internal broadband detec-

tors.

Formats

Log or linear magnitude, SWR, phase, group delay,

real and imaginary, Smith chart, polar, and imped-

ance magnitude

Trace functions

Current data, memory data, memory with current

data, division of data by memory

Display annotations

Start/stop, center/span, or CW frequency, scale per

division, reference level, marker data, softkey

labels, warning and caution messages, screen titles,

time and date, and pass/fail indication

Limits

Measurement data can be compared to any combi-

nation of line or point limits for pass/fail testing.

User-defined limits can also be applied to an ampli-

tude- or frequency-reference marker. A limit-test

TTL output is available on the rear panel for exter-

nal control or indication. Limits are only available

with rectilinear formats.

Data markers

Each measurement channel has eight markers.

Markers are coupled between channels. Any one of

eight markers can be the reference marker for del-

ta-marker operation. Annotation for up to four

markers can be displayed at one time.

Marker functions

Markers can be used in absolute or delta modes.

Other marker functions include marker to center

frequency, marker to reference level, marker to

electrical delay, searches, tracking, and statistics.

Marker searches include marker to maximum,

marker to minimum, marker to target value, band-

width, notch, multi-peak and multi-notch. The

marker-tracking function enables continuous

update of marker search values on each sweep.

Marker statistics enable measurement of the mean,

peak-to-peak and standard deviation of the data

between two markers. For rapid tuning and testing

of cable-TV broadband amplifiers, slope and flat-

ness functions are also available.

Storage

Internal memory

1.5 Mbytes (ET models) or 1 Mbyte (ES models) of

nonvolatile storage is available to store instrument

states, measurement data, screen images, and

IBASIC programs. Instrument states can include

all control settings, limit lines, memory data, cali-

bration coefficients, and custom display titles. If no

other data files are saved in nonvolatile memory,

between approximately 20 and 150 instrument

states can be saved (depending on the model type

and on instrument parameters). Approximately 14

Mbytes of volatile memory are also available for

temporary storage of instrument states, measure-

ment data, screen images, and IBASIC programs.

System features

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