Agilent 85022A Data Sheet

Agilent 8757D
Scalar Network Analyzer
10 MHz to 110 GHz

Data Sheet

Accurate measurement of transmission and reflec­tion characteristics is a key requirement in your
selection of a scalar network analyzer. To help you
achieve these goals, Agilent Technologies offers you
a choice of microwave scalar measurement solutions
which provide an excellent balance of cost, system
versatility, and measurement precision.

Agilent 8757D overview of features

• Four display channels

• Three detector inputs

• An optional fourth detector input (option 001)

• An optional internal power calibrator (option 002)

• Accurate power measurements with
Agilent 85037 series precision detectors

• High resolution color display

• Internal plotter/printer buffer

• +16 to –60 dBm dynamic range

• AC/DC detection modes

• 101 to 1601 measurement points/trace

• Noise figure measurement display capability

• Compatible with the Agilent 85025 and 85026
series detectors and the Agilent 85027 series
directional bridges

• Limit line testing (channels 1 and 2)

• Adaptive normalization

• Cursor search functions (max, min, n dB, BW)

Specifications describe the instrument’s warranted performance over the
temperature range 0 to 55°C (except where noted). Supplemental characteristics
are intended to provide information useful in applying the instrument, by giving
typical but non-warranted performance parameters. These are denoted as “typical,”
“nominal,” or “approximate.”

2

The Agilent 8757D has four independent display
channels that process the signals from the Agilent
85037 series precision detectors, 85025 and 85026
detectors, and the 85027 series directional bridges
for logarithmic display, in single channel or ratio
mode. Three (optionally four) detector inputs are
provided.

Display

Horizontal resolution

The number of points (horizontal resolution)
that can be selected depends on the number of
traces displayed.

Network analyzer Traces Selectable number of points

8757D 1 101, 201, 401, 801, 1601

2 101, 201, 401, 801
3, 4 101, 201, 401

Display modes

All analyzer display channels can display any one
of the detector inputs or any ratio combination
of detector inputs.

Log magnitude

dBm: single channel power measurement
dB: relative power measurement (ratio or relative
to trace memory)

SWR

Relative measurements (normalized or ratio
measurements) can be displayed in SWR.
Channels 1 and 2 only: 401 points or fewer

AUX voltage

The rear panel BNC input ADC IN can be meas­ured and displayed in volts (–10 to +10 volts).
Typical maximum error is 60 mV.

Color settings

Up to 8 operator-selectable colors are available
for LCD attributes, such as the grid, measurement
traces, and labels.

Sweep time

The minimum sweep time depends on the number
of traces displayed and the number of points
selected.

Minimum sweep time (ms)
Number (log magnitude format)
of points 1 trace 2 traces 3 traces 4 traces

101 40 50 60 70
201 50 75 90 100
401 100 100 150 200
801 200 250 NA NA
1601 400 NA NA NA

Averaging

2, 4, 8, 16, 32, 64, 128, or 256 successive traces can
be averaged.

Smoothing

Provides a linear moving average of adjacent data
points. The smoothing aperture defines the trace
width (number of data points) to be averaged, and
ranges from 0.1% to 20% of the trace width.

Normalization

Traces are stored and normalized with the highest
resolution, independent of display scale/division or
offset. With adaptive normalization on the Agilent
8757D, calibration data is interpolated when the
frequency span is decreased.

Limit lines

Limit lines facilitate quick pass/fail decisions.
Limits can be any combination of flat or sloped
lines or single points up to 12 segments. They
are only available for channels 1 and 2, for traces
with 401 points or fewer, and can be stored in
save/recall registers 1 through 4.

Agilent 8757D scalar network analyzer

3

Internal save/recall registers

Up to 9 complete front panel states may be saved
or recalled. If the source (Agilent 8360 or 8370
series) is connected to the 8757 system interface,
the front panel states of both the network analyzer
and source are saved. Registers 1 through 4 store
the instrument state and the memory traces for
channels 1 and 2. The memory traces for channels
3 and 4 are not stored. Registers 5 through 9 only
store the instrument state.

Display Scale Display Vertical
mode resolution range resolution

dBm 0.1 to 20 dB/div –80 to +80 dBm 0.003 dB

1

(1/2/5 sequence)

dB 0.1 to 20 dB/div –90 to +90 dB 0.006 dB

1

(1/2/5 sequence)

Normalized 0.1 to 20 dB/div –180 to +180 dB 0.01 dB
ratio (1/2/5 sequence)
measurements

SWR 0.02 to 10 units/div 1.0 to 37.0 0.01 at 1

(1/2/4 sequence) 0.1 at 10

0.27 at 30

AUX 0.025 to 5 V/div –10 to +10 V 0.001 V
voltage (1/2.5/5 sequence)

1. 0.01 dB for display cursor

Modulation requirements

Applies to the Agilent 85037 series precision detec­tors, 85025/26 series detectors, and 85027 series
directional bridges in AC mode.

Square-wave amplitude modulation

Frequency 27,778 Hz ±20 Hz
≥30 dB on/off ratio
45% to 55% symmetry

Rear panel connectors

Sweep voltage requirements (Sweep in)

Horizontal sweep voltage, normally provided by
the sweeper, from 0 to 10 volts.

Marker and blanking requirements (Pos z blank)

Blanking and marker signals are provided by the
sweeper through the “Pos z blank” input on the
rear panel of the Agilent 8757.

Voltage levels

Blanked: +5 V typical
Unblanked: 0 V typical
Marker: –4 V typical
Active marker: –8 V typical

Modulator drive

The modulator drive output of the 8757 scalar
analyzer provides the circuitry to drive the
8340/50/60/70 series synthesized sweepers and the
Agilent 11665B modulator. Modulation drive may
be turned on and off via the front panel or GPIB.
In the “off” state, the modulator drive signal turns
the 11665B fully on for minimum insertion loss.
The 8360 and 8370 synthesized sweepers have the
capability of modulating signals, so an external
modulator such as the 11665B is not necessary
when using the 8360/70 series.

Frequency: 27,778 Hz ±12 Hz
Symmetry: 50% ±1%

Stop sweep

Used with the 8360 and 8370 series when con­trolled by the 8757 system interface to stop the
sweep at band crossings and at the end of sweep.

ADC in

An input connector for auxiliary voltage input
in the –10 to +10 volt range. This voltage can be
displayed (in volts) on any channel.

Control 1 and control 2

These connectors provide digital output signals
(TTL open-collector) as a user convenience for
driving other peripheral equipment in a GPIB
controlled system.

Video outputs

Used to drive an external color monitor that has
the following characteristics:

8757D with LCD monitor (VGA input on the

analyzer’s rear panel)

• VGA compatible

8757D with CRT monitor (RGB inputs on the

analyzer’s rear panel)

• Red, green, and blue (RGB) BNC inputs, sync

on green

• 75 ohm input impedance

• 26.5 kHz horizontal scan rate

• 60 Hz vertical refresh rate

• 1 V p-p (typically 0.7 V = white; 0 V = black;

-0.3 V = sync)

4

GPIB

Interface

GPIB operates according to IEEE 488-1978 and
IEC-625 interface standards.

Interface function codes

SH1, AH1, T6, TE0, L4, LE0, SR1, RL1, PP0, DC1,
DT0, C0, E1.

Transfer formats

Data can be transferred either as ASCII strings
or as 16-bit integers. Readings may be taken at a
single point, or an entire trace may be transferred
at once.

Transfer speed

ASCII format, 401 point trace: 500 ms typical
ASCII format, single point: 10 ms typical
Binary format, 401 point trace: 30 ms typical
Binary format, single point: 7 ms typical

Programmable functions

All front panel functions except power on/off are
programmable. The 8757D is compatible with
all appropriate 8757A/C scalar analyzer program­ming codes.

User-accessible display graphics

HPGL subset that allows user to display test
setup diagrams and operator instructions on the
analyzer CRT/LCD.

Interrupts

GPIB service interrupts (SRQs) are generated for
the following conditions:

• Front-panel key pressed

• Operation complete

• Illegal command

• Instrument self-test error

• Limit test failed

System interface

The Agilent 8757 system interface is a dedicated
GPIB port used exclusively by the 8757 to control
and extract information from a swept source, a dig­ital plotter, and a printer.

Compatible swept sources

The following swept sources are specifically made
to complement the 8757 system. With them, the
8757 is able to display start, stop, and marker fre­quencies, save and recall front panel states of both
the sweeper and the scalar analyzer, preset both
instruments simultaneously, and alternately sweep
two different frequency or power ranges and dis­play both simultaneously:

• Agilent 8360 series synthesized sweeper

• Agilent 8370 series synthesized sweeper

Printers

For a list of compatible printers, consult our
printer-compatibility guide Web page. Its URL
location is http://www.agilent.com/find/pcg. Or go
to www.agilent.com and use keyword search
printer guide.

Internal plotter/printer buffer

The GPIB buffer speeds measurements by return­ing the control to the analyzer while outputting
data to a plotter or printer. Output two channels
(401 points each) of information to the buffer in
typically less than 5 seconds.

Note: In order to use the currently available printers a GP-IB
to parallel port adapter is needed. Adapters are available
from Intelligent Interfaces. Please see their website at

http://www.intelligentinterfaces.com.

Disk interface

The 8757D provides the capability to store and
retrieve the analyzer’s instrument state, measure­ment data, and user accessible display graphics
to and from an external GPIB disk drive that is
compatible with command subset CS/80. Data files
are stored in Agilent’s standard LIF format and
can be read by a wide variety of computers, includ­ing the HP 9000 series 200 or 300. Files can be
stored in binary or ASCII format.

Disk Drive

Agilent no longer offers Option 802, the HP 9122C
disk drive. Agilent 8757D-compatible disk drives
are available from ISA, Inc. In the U.S., contact
Saaya, Inc. (formerly known as ISA, Inc.).
Elsewhere, contact ISA Company, Ltd. at

http://www.isa-j.co.jp/.

Agilent 8757D scalar network analyzer, continued

5

General information

Temperature range

Operating: 0 to 55°C
Storage: –40 to 75°C

Power requirements

48 to 66 Hz, 100/120/220/240 V ±10%,
typically 155 VA

Dimensions: 178 H x 425 W x 482 mm D

(7.0 x 16.75 x 19.0 in)

Weight: Net 22 kg (48 lb), Shipping: 28 kg (61.5 lb)

Power calibrator (Option 002 only)

The 8757D’s internal power calibrator provides
a 50 MHz reference standard for characterizing
the absolute power accuracy and dynamic power
accuracy of the 85037 series precision detectors.

Frequency: 50 MHz ±0.2 MHz

Output power: (25 ±5°C)

Range: +20 to –50 dBm
Accuracy at 0 dBm: ±0.05 dB
Linearity: (over any 10 dB range)

±0.08 dB (+20 to +10 dBm)
±0.04 dB (+10 to –30 dBm)
±0.06 dB (–30 to –50 dBm)

SWR: ≤1.05

Modes of operation

DC Mode (unmodulated)
AC Mode (modulated at 27,778 Hz ±12 Hz)

Connector: Type-N (f)

Accessory included

A Type-N (m) to 3.5-mm (f) adapter is provided
to allow calibration of the 85037B (3.5 mm)
precision detector.

Ordering information

Agilent 8757D scalar network analyzer

Option 001: adds fourth detector input
Option 002: adds internal power calibrator
Option 1BN: MIL -STD 45662A certificate of

calibration

Option 1BP: MIL -STD 45662A certificate of

calibration with data

6

Transmission measurement accuracy

Transmission loss or gain measurements are made
relative to a 0 dB reference point established at
calibration.

Transmission measurement uncertainty =
dynamic power accuracy + mismatch uncertainty

Dynamic power accuracy is the measurement uncer­tainty due to the change in power level between cali­bration and the measurement. Mismatch uncertainty
is the uncertainty due to reflections in the measure­ment setup. The frequency response errors of the
source, detectors, bridge, and power splitter are
removed via calibration.

Transmission measurement uncertainty examples

Assumptions:

• Measurement frequency = 10 GHz

• DUT input/output SWR = 1.5

• Ratio measurement

Change in power after calibration

<30 dB (+0 to –30 dBm range)

85037B 85025E

Uncertainty component precision detector detector

Dynamic accuracy (±dB) 0.11 0.40
Mismatch (±dB) 0.45 0.33

Total (±dB) 0.56 0.73

Change in power after calibration

60 dB (+6 to –55 dBm range)

85037B 85025E

Uncertainty component precision detector detector

Dynamic accuracy (±dB) 0.96 2.00
Mismatch (±dB) 0.45 0.33

Total (±dB) 1.41 2.33

Absolute power measurement accuracy

This specification is useful for determining the
accuracy of power measurements in dBm when
using the Agilent 85037 series precision detectors
or the 85025 series detectors in DC mode.

Absolute power uncertainty =
absolute power accuracy at 50 MHz + frequency
response + mismatch uncertainty

Absolute power measurement uncertainty examples

Assumptions:

• Measurement frequency = 10 GHz

• DUT input/output SWR = 1.5

Power = +10 dBm

85037B 85025E

Uncertainty component precision detector detector

Absolute power accuracy

at 50 MHz (±dB) 0.11 0.50
Frequency response (±dB) 0.18 0.50
Mismatch (±dB) 0.18 0.10

Total (±dB) 0.47 1.10

Power = 0 dBm

85037B 85025E

Uncertainty component precision detector detector

Absolute power accuracy

at 50 MHz (±dB) 0.11 0.40
Frequency response (±dB) 0.18 0.50
Mismatch (±dB) 0.18 0.10

Total (±dB) 0.47 1.00

Power = 50 dBm

85037B 85025E

Uncertainty component precision detector detector

Absolute power accuracy

at 50 MHz (±dB) 0.85 1.30
Frequency response (±dB) 0.18 0.50
Mismatch (±dB) 0.18 0.10

Total (±dB) 1.21 1.90

System accuracy

7

Precision detector vs. power sensor absolute
power measurement accuracy

Accuracy terms differ depending on the test equip­ment used to make absolute power measurements.
The following table simplifies and compares the
accuracy terms of an Agilent 8757 system (using
an 85037 series precision detector) and a power
meter (using a power sensor). A measurement
accuracy example is also provided.

Scalar terms Equivalent power meter/sensor terms

Absolute power Power reference uncertainty
accuracy at 50 MHz Instrument linearity

Zero set
Noise

Frequency response Sensor calibration factor uncertainty

Mismatch Mismatch

Scalar analyzer vs. power meter
Absolute power measurement uncertainty examples

Assumptions:

• Measurement frequency = 10 GHz

• DUT input/output SWR = 1.5

• Power measurement range = +10 to –20 dBm

Uncertainty component

(see above table for 8757D Opt. 002/ EPM-4418B
equivalent power meter terms) 85037B 8485A

Absolute power accuracy

at 50 MHz (±dB) 0.11 0.09
Frequency response (±dB) 0.18 0.09
Mismatch (±dB) 0.18 0.12

Total (±dB) 0.47 0.30

Reflection measurement accuracy

Uncertainties due to calibration error and the
frequency response of the source, detectors, and
bridges are removed via open/short averaging.
The remaining uncertainties are primarily the sum
of directivity uncertainty, effective source match
uncertainty, and dynamic power accuracy. As shown
in the graphs below, directivity is the dominant error
term when measuring small ref lected signals (high
return loss) and source match is dominant when
measuring large reflected signals (low return loss).

Effective source match vs. reflection uncertainty

Directivity vs. reflection uncertainty

Example calculation

The following example shows how to find the
uncertainty (excluding dynamic accuracy) in
measuring a 14-dB return loss (SWR = 1.5)
with an 85027A directional bridge at 10 GHz
(directivity = 40 dB, test port match = 1.25 SWR).

Uncertainty component Uncertainty

Source match error approximately ±0.2 dB
Directivity error approximately ±0.4 dB

Total uncertainty approximately ±0.6 dB

8

Detectors

Agilent 85037 series precision detectors (AC/DC)

The 85037 series precision detectors are designed
specifically for operation with the Agilent 8757D
scalar network analyzer and are not compatible
with the 8757A/E, 8756, or 8755 scalar network
analyzers. These detectors may be used in either
AC or DC detection modes. For improved power
measurement accuracy versus frequency, each
85037 series precision detector includes detector
specific frequency response data, stored in an
internal EEPROM, which is automatically read by
the 8757D. When used in conjunction with the
8757D’s internal power calibrator (Option 002),
these detectors provide the maximum absolute
power measurement accuracy.

Agilent 85025 and 85026 series detectors (AC/DC)

The 85025 and 85026 series detectors are designed
specifically for operation with the Agilent 8757
scalar network analyzer and are not compatible
with either the 8756 or the 8755. The 85025/26
detectors may be used in either AC or DC detec­tion modes.

General information—coaxial detectors

Impedance: 50 ohms nominal
Maximum input power: +20 dBm (100 mW)
Maximum input voltage: 10 VDC
Dimensions: Cable length is 1.22 m (48 in.)
Weight: Net 0.24 kg (0.5 lb), Shipping 1.0 kg (2.2 lb)

Detector adapters

The Agilent 85025C detector adapters match the
scalar analyzer display to most standard crystal,
silicon, and gallium arsenide detectors. This
enables the user to operate up to 110 GHz with
the Agilent 8757. The 85025C detector adapters
are designed for use with the 8757 only, and can
operate in either AC or DC detection modes.

Maximum measurable input: ±3 V peak
Maximum allowable input: ±10 V peak
Connector: SMA (m)

System accessories

Precision Detector Summary, Agilent 85037 Series

1

For use with the 8757D in either AC or DC detection modes

Frequency Connector Return Frequency

Model range type Dynamic range Frequency loss response

3

85037A 10 MHz to 18 GHz Type-N (m) AC mode +20 to –55 dBm 0.01 to 0.04 GHz 10 dB ±0.35 dB

7 mm

2

DC mode +20 to –50 dBm 0.04 to 18 GHz 20 dB ±0.18 dB

85037B 10 MHz to 26.5 GHz 3.5 mm (m) AC mode +20 to –55 dBm 0.01 to 0.04 GHz 10 dB ±0.35 dB

DC mode +20 to –50 dBm 0.04 to 18 GHz 20 dB ±0.18 dB

18 to 26.5 GHz 18 dB ±0.22 dB

Power Dynamic accuracy

4,5

Absolute accuracy

4,6

Model (50 MHz) Corrected Default Corrected Default

85037A/B 20 dBm ±0.25 dB ±0.40 dB ±0.25 dB ±0.40 dB

10 dBm ±0.11 dB ±0.40 dB ±0.11 dB ±0.40 dB
–30 dBm ±0.11 dB ±0.40 dB ±0.11 dB ±0.40 dB
–40 dBm ±0.40 dB ±0.80 dB ±0.40 dB ±0.80 dB
–50 dBm ±0.85 dB ±1.30 dB ±0.85 dB ±1.30 dB
–55 d8m ±0.85 dB ±1.30 dB — —

Temperature coefficient of linearity: 0.01 dB/°C temperature change after calibration

1. The 85037A/B specifications are only applicable when used with the 8757D

scalar network analyzer.

2. Option 001 changes to 7 mm connector.

3. –10 dBm, 25 ±5°C

4. The corrected specifications apply after a calibration via the 8757D Option 002 inter­nal power calibrator. The default specifications apply when the calibrator is not used.
Power calibrator uncertainty is included in the 85037A/B corrected specifications.

5. Dynamic accuracy refers to measurement accuracy as power varies (in dB) from
a 0 dBm reference. 25 ±5°C. 50 MHz, calibration and measurement at the same
temperature.

6. DC mode. 25 ±5°C, calibration and measurement at the same temperature.

9

Coaxial Detector Summary, Agilent 85025 Series
For use with the 8757 in either AC or DC detection modes

Frequency Connector Dynamic Return Frequency Power Dynamic Absolute

Model range type range Frequency loss response2(50 MHz) accuracy3accuracy

4

85025A

5

10 MHz to Type-N (m) AC mode 0.01 to 0.04 GHz 10 dB ±0.8 dB 16 dBm ±0.8 dB ±0.8 dB
18 GHz +16 to –55 dBm 0.04 to 4 GHz 20 dB ±0.5 dB 6 dBm ±0.4 dB ±0.4 dB

7 mm

1

DC mode 4 to 18 GHz 17 dB ±0.5 dB –35 dBm ±0.4 dB ±0.4 dB
+16 to –50 dBm –50 dBm ±1.3 dB ±1.3 dB

–55 dBm ±1.6 dB

85025B

5

10 MHz to 3.5 mm (m) AC mode 0.01 to 0.04 GHz 10 dB ±0.8 dB 16 dBm ±0.8 dB ±0.8 dB

26.5 GHz +16 to –55 dBm 0.04 to 4 GHz 20 dB ±0.5 dB 6 dBm ±0.4 dB ±0.4 dB
DC mode 4 to 18 GHz 17 dB ±0.5 dB –35 dBm ±0.4 dB ±0.4 dB
+16 to –50 dBm 18 to 26.5 GHz 12 dB ±2.0 dB –50 dBm ±1.3 dB ±1.3 dB

–55 dBm ±1.6 dB

85025D

5

10 MHz to 2.4 mm (m) AC mode 0.01 to 0.1 GHz 10 dB ±0.8 dB 16 dBm ±1.0 dB ±1.0 dB
50 GHz +16 to –55 dBm 0.1 to 20 GHz 20 dB ±0.5 dB 6 dBm ±0.4 dB ±0.4 dB

DC mode 20 to 26.5 GHz 20 dB ±1.0 dB –35 dBm ±0.4 dB ±0.4 dB
+16 to –50 dBm 26.5 to 40 GHz 15 dB ±2.5 dB –50 dBm ±1.3 dB ±1.3 dB

40 to 50 GHz 9 dB ±3.0 dB –55 dBm ±1.6 dB

85025E

5

10 MHz to 3.5 mm (m) AC mode 0.01 to 0.1 GHz 10 dB ±0.8 dB 16 dBm ±1.0 dB ±1.0 dB

26.5 GHz +16 to –55 dBm 0.1 to 18 GHz 25 dB ±0.5 dB 6 dBm ±0.4 dB ±0.4 dB
DC mode 18 to 25 GHz 25 dB ±0.5 dB –35 dBm ±0.4 dB ±0.4 dB
+16 to –50 dBm 25 to 26.5 GHz 23 dB ±1.4 dB –50 dBm ±1.3 dB ±1.3 dB

–55 dBm ±1.6 dB

Waveguide Detectors and Detector Adapters Summary
For use with the 8757 only in either AC or DC detection modes

Frequency Connector Return Frequency Dynamic

Model range type Dynamic range loss response accuracy

R85026A

5

26.5 to WR-28 +10 to –50 dBm (AC mode) 12 dB ±1.5 dB ±(0.3 dB + 0.03 dB/dB)
40 GHz +10 to –45 dBm (DC mode)

Q85026A

5

33 to WR-22 +10 to –50 dBm (AC mode) 12 dB ±2.0 dB ±(0.3 dB + 0.03 dB/dB)
50 GHz +10 to –45 dBm (DC mode)

U85026A

5

40 to WR-19 +10 to –50 dBm (AC mode) 12 dB ±2.0 dB ± (0.3 dB + 0.03 dB/dB)
60 GHz +10 to –45 dBm (DC mode)

85025C 50 to WR-15 +10 to –45 dBm (typical) 9.5 dB
Opt. K57

7

75 GHz (typical)

85025C 75 to WR-10 +10 to –45 dBm (typical) 9.5 dB
Opt. K71

7

110 GHz (typical)

85025C

56

SMA (m)

6666

1. Option 001 changes to 7 mm connector.

2. –10 dBm, 25 ±5°C

3. Dynamic accuracy refers to measurement accuracy as power varies (in dB) from
a 0 dBm reference. 25 ±5°C, 50 MHz.

4. DC mode, 25 ±5°C.

5. The 85025 and 85026 series detectors and the 85025C detector adapter require
8757A firmware revision 2.0 or higher.

6. Depends on the detector.

7. Must be used with the 85025C detector adapter.

10

Directional bridges

Agilent 85027 series directional bridges (AC/DC)

The 85027 series directional bridges are designed to
operate with either the 8757 in AC or DC detection
modes or with the 8756 or 8755 in AC detection
mode. These bridges offer high directivity, excellent
test port match, and a measurement range of up
to 50 GHz in coax.

General information—directional bridges

Dynamic power accuracy

(50 MHz, 25 ±5°C, +7 dBm input)

Typical insertion loss

6.5 dB at 10.0 MHz

8.0 dB at 18.0 GHz

10.0 dB at 26.5 GHz

11.0 dB at 40.0 GHz

13.0 dB at 50.0 GHz

Typical minimum input power for a 40 dB return loss

measurement at 18 GHz: +2 dBm

Dimensions: 26 H x 124 W x 118 mm D

(1.0 x 4.9 x 4.4 in)

Weight: Net 0.5 kg (1.2 lb), Shipping 2.3 kg (5 lb)
Accessories included with directional bridges:

85027A

7 mm open/short
Type-N (m)–(m) adapter

85027B

3.5 mm (m) open/short

3.5 mm (m)–(m) adapter

3.5 mm (m)–(f) adapter

85027C

Type-N (m) short
Type-N (m) shielded open
Type-N (m)–(m) adapter

85027D

2.4 mm (f) open

2.4 mm (f) short

85027E

3.5 mm (f) open/short

3.5 mm (f)–(f) adapter

3.5 mm (f)–(m) adapter

System accessories, continued

Directional Bridge Summary
For use with the 8757 in AC or DC detection mode or with the 8756 or 8755 in AC detection mode only

Frequency Nominal Input Test port Test port

Model range impedance connector connector Frequency Directivity Frequency match

85027A 10 MHz to 50 ohms Type-N (f) 7 mm 0.01 to 18 GHz 40 dB 0.01 to 8.4 GHz <1.15 SWR

18 GHz 8.4 to 12.4 GHz <1.25 SWR

12.4 to 18 GHz <1.43 SWR

85027B 10 MHz to 50 ohms 3.5 mm (f) 3.5 mm (f) 0.01 to 20 GHz 40 dB 0.01 to 8.4 GHz <1.15 SWR

26.5 GHz 20 to 26.5 GHz 36 dB 8.4 to 20 GHz <1.43 SWR
20 to 26.5 GHz <1.78 SWR

85027C 10 MHz to 50 ohms Type-N (f) Type-N (f) 0.01 to 12.4 GHz 36 dB 0.01 to 8.4 GHz <1.15 SWR

18 GHz 12.4 to 18 GHz 34 dB 8.4 to 12.4 GHz <1.25 SWR

12.4 to 18 GHz <1.43 SWR

85027D 10 MHz to 50 ohms 2.4 mm (f) 2.4 mm (m) 0.01 to 26.5 GHz 35 dB 0.01 to 16 GHz <1.18 SWR

50 GHz 16 to 30 GHz <1.27 SWR

26.5 to 40 GHz 30 dB 30 to 40 GHz <1.40 SWR
40 to 50 GHz 25 dB 40 to 50 GHz (typical) <1.85 SWR

85027E 10 MHz to 50 ohms 3.5 mm (f) 3.5 mm (m) 0.01 to 20 GHz 40 dB 0.01 to 8.4 GHz <1.15 SWR

26.5 GHz 20 to 26.5 GHz 36 dB 8.4 to 20 GHz <1.43 SWR
20 to 26.5 GHz <1.78 SWR

11

Power splitters

The Agilent 11667 series power splitters are two­resistor splitters recommended for external source
leveling or for ratio measurement applications.

General information

Impedance: 50 ohms nominal
Maximum input power: +27 dBm
Dimensions: 46 H x 52 W x 21 mm D

(1.8 x 2.0 x 0.8 in)

Weight: Net 0.14 kg (0.3 lb), Shipping 0.22 kg (0.5 lb)

Power dividers

The Agilent 11636 series power dividers are three­resistor splitters intended for direct power divid­ing applications such as transmission line fault
location. The 11636 series can also be used as a
power combiner.

General information

Impedance: 50 ohms nominal
Dimensions: 42 H x 45 W x 18 mm D

(1.6 x 1.8 x 0.7 in)

Weight: Net 0.14 kg (0.3 lb), Shipping 0.45 kg (1.0 lb)

Power splitters

Frequency Input Output Insertion loss Equivalent Output

Model range connector connectors Frequency (typical) output match tracking

11667A DC to 18 GHz Type-N (f)

1

Type-N (f) DC to 4 GHz 6.6 dB 1.10 SWR 0.15 dB

4 to 8 GHz 7.0 dB 1.20 SWR 0.20 dB
8 to 18 GHz 7.8 dB 1.33 SWR 0.25 dB

11667B DC to 26.5 GHz 3.5 mm (f) 3.5 mm (f) DC to 8 GHz 6.5 dB 1.22 SWR 0.25 dB

8 to 18 GHz 7.0 dB 1.22 SWR 0.25 dB
18 to 26.5 GHz 7.3 dB 1.22 SWR 0.40 dB

11667C DC to 50 GHZ 2.4 mm (f) 2.4 mm (f) DC to 18 GHz 6.0 dB 1.29 SWR 0.30 dB

18 to 26.5 GHz 7.0 dB 1.20 SWR 0.35 dB

26.5 to 40 GHz 8.0 dB 1.50 SWR 0.40 dB
40 to 50 GHz 8.5 dB 1.65 SWR (typical) 0.40 dB

Power dividers

Frequency Input Output Output Output

Model range connector connectors Frequency match tracking

11636A DC to 18 GHz Type-N (m) Type-N (f) DC to 4 GHz 1.25 SWR 0.20 dB

4 to 10 GHz 1.25 SWR 0.40 dB
10 to 18 GHz 1.35 SWR 0.50 dB

11636B DC to 26.5 GHz 3.5 mm (f) 3.5 mm (f) DC to 10 GHz 1.22 SWR 0.25 dB

10 to 18 GHz 1.29 SWR 0.50 dB
18 to 26.5 GHz 1.29 SWR 0.50 dB

1. Option 001 changes the input connector to Type-N (m).

12

Agilent 11679A/B extension cables

These cables extend the distance between the
scalar network analyzer and the detector or bridge
to a maximum of 200 feet without degradation of
performance.

11679A 7.6 m (25 ft) extension cable
11679B 61 m (200 ft) extension cable

Agilent 11665B modulator

Note: This product is no longer available. The 11665B modulator is only
necessary when using the 8340/8341 series synthesizer.

The 11665B modulates test signals with the

27.8 kHz modulation drive signal from the scalar
network analyzer.

Frequency range: 15 MHz to 18 GHz

Insertion loss and return loss

Insertion loss

Frequency Return loss ON (+50 mA) OFF (–50 mA)

15 MHz to 40 MHz >10 dB <7.0 dB >35 dB
40 MHz to 4 GHz >15 dB <3.2 dB >35 dB
4 GHz to 8 GHz >12 dB <3.8 dB >40 dB
8 GHz to 12.4 GHz >8 dB <4.3 dB >45 dB

12.4 GHz to 18 GHz >8 dB <5.0 dB >45 dB

Maximum input: +24 dBm
Connectors: Input: Type-N (f), Output: Type-N (m)
Weight: Net: 0.17 kg (0.38 lbs), Shipping: 0.9 kg (2 lbs)

Agilent 85022A system cable kit

The 85022A contains the BNC and GPIB cables
needed to connect a source to the 8757.

Contents

GPIB cable, 100 cm (3.3 ft.), 3 each
50 ohm BNC (m) cable, 61 cm (2 ft.), 3 each
50 ohm BNC (m) cable, 122 cm (4 ft.)

Weight: Net: 0.5 kg (1.2 lbs.), Shipping: 1.2 kg (2.9 lbs)

Agilent 11613B calibrator

The 11613B is a dedicated transfer standard for
calibration of the 8757. The 11613B provides the
standard, a 27.778 kHz source, and a series of
precision attenuators. The calibrator includes
software (3.5-inch format) that operates on an
HP 9000 series 200 or 300 computer, the BASIC
operating system (BASIC 3.0 or higher), or an
external controller with HP BASIC for Windows 7.0
or higher. The software verifies (and adjusts if nec­essary) the internal calibration parameters stored
in the nonvolatile memory of the 8757. All 8757
detector inputs can be calibrated in a matter of
minutes. Recalibration of the 11613B is recom­mended every two years.

Memory requirement: 0.5 Mbyte

Outputs

The 5-pin cable (1.22 m) mates with the detector
inputs of the 8757. The lines in this cable transfer
the squarewave signal to the 8757, provide power
for the 11613B (from the 8757 supply), and pro­gram the 11613B’s internal attenuators.
Dimensions: 40 H x 185 W x 203 mm D

(1.5 x 7.3 x 8.0 in)

Cable length: 1.22 m (48 in)
Weight: Net: 0.91 kg (2 lbs), Shipping: 2.3 kg (5 lbs)

Software

Amplifier test software Agilent part number 86399-10001

This amplifier test software automates basic
amplifier measurements of gain, gain compression,
return loss, and standing wave ratio. The software
is completely menu driven for simplicity and
ease of use. A 3.5-inch format is provided.
Software operates on an HP 9000 series 200 or
300 computer.

System accessories, continued

13

Service and support products

Agilent 8757D Option W30
Three additional years return-to-Agilent service
(where available)

In the event of a failure, Agilent will repair these
products for three years after delivery. (The first
year is under standard warranty; the second and
third are under this extended support program.)
All parts, labor, post-repair adjustments, and veri­fication are included. (Periodic maintenance and
scheduled calibrations are not included.)

Agilent 8757D Option W32
Three-year calibration

Option W32 provides three years of return-to­Agilent calibration service. This includes scheduled
calibration at the manufacturer’s calibration cycle
and calibration after repair performed by Agilent.

Agilent 8757D Option 1BN
MIL-STD 45662A certificate of calibration

Certificate of calibration in full compliance with
MIL-STD 45662A.

Agilent 8757D Option 1BP
MIL-STD 45662A certificate of calibration with data

Certificate of calibration in full compliance with
MIL-STD 45662A supplied with calibration data.
Contact your local Agilent sales office for additional
service and support options.

Literature guide Pub. number

Agilent 8757D/E scalar network 5091-2469E
analyzers, Brochure

Agilent 8757D scalar network 5967-6177E
analyzer, Configuration Guide

Improving network analyzer 5966-3318E
measurements of frequency­translating devices,

Application Note 1287-7

Network analyzer measurements: 5965-7710E
filter and amplifier examples,

Application Note 1287-4

Millimeter wave measurements; 5964-8380
V & W band scalar measurements
using the scalar network analyzer,

Product Note 8757-2

Microwave component measure- 5954-1599
ments; amplifier measurements
using the scalar network analyzer,

Application Note 345-1

Extended dynamic range of scalar 5963-8882
transmission measurements using
the Agilent 8757A, 8756A, and
8755C scalar network analyzers,

Application Note 327-1

Measuring voltage-controlled 5964-1537
devices with the Agilent 8757A
scalar network analyzer,

Product Note 8757-5

Better Performance At an 5091-6169E
Attractive Price

Support products and literature

Agilent Technologies’ Test and Measurement
Support, Services, and Assistance

Agilent Technologies aims to maximize the value you receive,
while minimizing your risk and problems. We strive to ensure
that you get the test and measurement capabilities you paid
for and obtain the support you need. Our extensive support
resources and services can help you choose the right Agilent
products for your applications and apply them successfully.
Every instrument and system we sell has a global warranty.
Support is available for at least five years beyond the produc­tion life of the product. Two concepts underlie Agilent’s
overall support policy: “Our Promise” and “Your Advantage.”

Our Promise

“Our Promise” means your Agilent test and measurement equip­ment will meet its advertised performance and functionality.
When you are choosing new equipment, we will help you with
product information, including realistic performance specifica­tions and practical recommendations from experienced test
engineers. When you use Agilent equipment, we can verify that
it works properly, help with product operation, and provide
basic measurement assistance for the use of specified capabili­ties, at no extra cost upon request. Many self-help tools are
available.

Your Advantage

“Your Advantage” means that Agilent offers a wide range of
additional expert test and measurement services, which you
can purchase according to your unique technical and business
needs. Solve problems efficiently and gain a competitive edge
by contracting with us for calibration, extra-cost upgrades, out­of-warranty repairs, and on-site education and training, as well
as design, system integration, project management, and other
professional services. Experienced Agilent engineers and tech­nicians worldwide can help you maximize your productivity,
optimize the return on investment of your Agilent instruments
and systems, and obtain dependable measurement accuracy
for the life of those products.

By internet, phone, or fax, get assistance with all your
test and measurement needs.

Online Assistance

www.agilent.com/find/assist

Phone or Fax

United States:
(tel) 1 800 452 4844

Canada:

(tel) 1 877 894 4414
(fax) [phone]

Europe:

(tel) (31 20) 547 2323
(fax) (31 20) 547 2390

Japan:

(tel) (81) 426 56 7832
(fax) (81) 426 56 7840

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(tel) [phone]
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(tel) (852) 3197 7777
(fax) (852) 2506 9284

Product specifications and descriptions in this
document subject to change without notice.

Copyright © 1998, 2001
Agilent Technologies
Printed in U.S.A. January 24, 2001
5091-2471E