HP (Hewlett-Packard) 11793A User Manual

OPERATING

AND

SERVICE

MANUAL

HP

M

I

C

11793A

R

0

WAVE

CONVERTER

September

1 1793-9001 1

111111111111111111111111111111111111111111111111111111111111ll111

1990

HEWLETT

PACKARD

CERTl FlCATlON

Hewlett-Packard Company certifies from the factory. Hewlett-Packard further certifies that its calibration measurements are traceable to the United States National Bureau of Standards, to the extent allowed by the Bureau’s calibration facility, and to the calibration facilities of other International Standards Organization members.

that

this

product met its published specifications

ut

the time of shipment

WARRANTY

This Hewlett-Packard instrument product

of

of one year from date

shipment. During the warranty period, Hewlett-Packard Company will at its option,

is

warranted against defects in material and workmanship for a period

either repair or replace products which prove to be defective.

For warranty service or repair, this product must be returned

HP

prepay shipping charges to HP and

shall pay shipping charges

shall pay all shipping charges, duties, and taxes for products returned

HP warrants that its software

and

firmware designated by HP for use with an instrument will execute

to

a service facility designated by HP. Buyer shall

to

return the product

to

HP from another country.

to

Buyer. However, Buyer

its

programming instructions when properly installed on that instrument. HP does not warrant that the operation of the instrument, or software, or firmware will be uninterrupted or error free.

LIMITATION OF WARRANTY

The foregoing warranty shall not apply Buyer-supplied software or interfacing, unauthorized modification or misuse, operation outside

to

defects resulting from improper or inadequate maintenance by Buyer,

of

the environmental

specifications for the product, or improper site preparation or maintenance.

NO OTHER WARRANTY

IS

EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED

WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

EXCLUSIVE

REMEDIES

THE REMEDIES PROVIDED HEREIN ARE BUYERS SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

ASSISTANCE

Product maintenance agreements and other customer assistance agreements are available

products.

For

any assistance, contact your nearest Hewlett-Packard Sales and Service Office. Addresses are provided at

this

the back of

manual.

for

Hewlett-Packard

e.

,

.'::is:.

.*a*..

:

-

:

.

Ag

i

I

en

t

.

Innovating the

June

8,2000

Dear Customer,

Techno

HP

Io

Way

g

i

es

Agilent Technologies.

24001

E

Mission

Liberty take, WA

Inc

99019

www

agilent

corn

As of November semiconductor products, health care solutions, and chemical analysis became a new company, Agilent Technologies. Now, many of your Hewlett-Packard products and services are in the care of Agilent Technologies.

At Agilent Technologies, we are working diligently to make this transition as smooth as possible for you. However, as a result of this transition, the products and related documentation contained in this shipment may be labeled with either the Hewlett-Packard name and logo, the Agilent Technologies name and logo, or a combination of both. Information in this package may refer to Hewlett-Packard (HP), but applies to your Agilent Technologies product. Hewlett-Packard and Agilent branded products with the same model number are interchangeable.

Whatever logo you see, the information, products, and services come from the same reliable source.

If

you have questions about Agilent Technologies products and services, please visit our website at

httR://www.aqilent.com.

Sincerely,

Rebranding

Team

1,

1999,

four

of

Hewlett-Packard's businesses, test and measurement,

HP

11793A

MICROWAVE

CONVERTER

EAST 24001

SERIAL

This manual applies directly to instruments with serial numbers prefixed 2520A.

With changes described also applies

2407A.

fixed

For

additional important information about serial numbers, see INSTRUMENTS MANUAL in Paragraph

MISSION

to

instruments with serial numbers pre-

OHEWLElT-PACKARD COMPANY 1985

AVENUE, TAF C-34, SPOKANE, WASHINGTON, U.S.A., 99220

NUMBERS

in

Paragraph

COVERED

4.

First Edition

31,

this manal

BY

THIS

Operating and Service Manual Part

Microfiche Operating and Service Manual Part

No.

11793-90011

No.

11793-90012

Printed.

MAY

1985

1

Regulatory

Information

(Updated

March

1999)

1

Regulatory Information (Updated March

1999)

Safety Considerations

GENERAL This product and related documentation must be reviewed for familiarization with safety

markings and instructions before operation.

This product "Safety Requirements for Electronic Measuring Apparatus," and safe condition. This instruction documentation contains information and warnings which must be followed by the condition.

SAFETY EARTH

A

uninterruptible safety

product input wiring terminals, power cord, or supplied power cord set. SAFETY

A

Indicates instrument damage can occur if indicated operating limits are exceeded.

A

Indicates hazardous voltages.

1-

Indicates

WARNING

has

been designed and tested

user

to ensure safe operation and to maintain the product in a safe

GROUND

earth

ground must be provided

SYMBOLS

earth

(ground) terminal

A

WARNING

practice, or the like, which, could result in personal injury.

sign

until the indicated conditions are fully understood and met.

note denotes a hazard. It calls attention to a procedure,

in

accordance

if

not correctly performed or adhered to,

Do

with

IEC

Publication

has

been supplied in

from

the

main

power source to the

not proceed beyond a

WARNING

1010,

a

CAUTION

A

CAUTION

procedure, practice, or the like, which, if not correctly performed or adhered to, could result in damage to or destruction of part or not proceed beyond understood and met.

note denotes a hazard.

an

CAUTION note

It

calls attention to an operation

all

of the product.

until

the indicated conditions are fully

Do

2

Chapter

1

Safety Considerations for this Instrument

Regulatory Information (Updated March

1999)

WARNING

This product

is

a

Safety Class I instrument (provided with a

protective earthing ground incorporated in the power cord). The

in

mains plug shall only be inserted

a socket outlet provided with

protective earth contact. Any interruption of the protective

conductor inside or outside

of

the product is likely to make the

product dangerous. Intentional interruption is prohibited. Whenever it

is

likely that the protection has been impaired, the instrument must be made inoperative and be secured against any unintended operation.

If

this instrument is to be energized via an auto transformer (for

voltage reduction), make sure the common terminal

is

connected to

the earth terminal of the power source.

If

this product the equipment could be impaired. This product must be used in normal condition (in which all means

No

operator serviceable parts in this product. Refer servicing to

is

not used as specified, the protection provided by

for

protection are intact) only.

a

qualified personnel. To prevent electrical shock, do not remove covers.

Servicing instructions are

for

use by qualified personnel only.

To avoid electrical shock, do not perform any servicing unless you are qualified to do

so.

a

The opening of covers dangerous voltages. Disconnect the product while it

The power cord live for

is

being opened.

is

5

seconds after disconnecting the plug from

or

removal of parts is likely to expose

from

all

voltage sources

connected to internal capacitors that my remain

its

power supply.

For Continued protection against fire hazard, replace the line fuse(s) only with example, normal blow or time delay).

250

V

fuse(s)

or

the same current rating and type

Do

not use repaired fuses

(for

or

short circuited fuseholders. Always

use the three-prong ac power cord supplied with this product. Failure to ensure adequate earth grounding by not using this cord may cause product damage.

This product Pollution Degree

INDOOR

USE

is

designed

2

ONLY.

per

for

IEC

use in Installation Category

1010

and

IEC

664

respectively.

I1

and

FOR

This product has autoranging line voltage input, be sure the supply voltage

is

within the specified range.

3

Regulatory

information

(Updated

March

1999)

To prevent electrical shock, disconnect instrument before cleaning. to clean the external case parts.

Ventilation Requirements: When installing the product in a cabinet,

the convection into and out The ambient temperature (outside the cabinet) must be less than the maximum operating temperature watts dissipated in the cabinet.

cabinet used.

Product

Markings

CE - the CE mark accompanied by

CSA - the

CSA

a

mark

Use

a

is

greater than

is

a

registered trademark

dry cloth

800

or

one slightly dampened with water

Do

not attempt to clean internally.

of

the product must not be restricted.

of

the product by

If

the total power dissipated in the

watts, then forced convection

of

the European Community. A CE mark

year indicated the year the design was proven.

is

a

registered trademark

of

the Canadian Standards Association.

from

4"

C

mains (line)

for

every

must

be

100

4

Chapter

1

Model

Safety Considerations

SAFETY

CONSIDERATIONS

GENERAL

This product and related documentation must be reviewed before operation for familiarization with

and

safety markings This product

vided with

is

a

protective earth terminal).

instructions.

a Safety Class I instrument (pro-

BEFORE APPLYING POWER

Verify that the product

line voltage and the correct fuse is installed.

is

set

to

match the available

SAFETY EARTH GROUND

An uninterruptible safety earth ground must be

to

provided from the main power source uct input wiring terminals, power cord, or supplied power cord set.

the prod-

SAFETY SYMBOLS

Instruction manual symbol: the product

A

will be marked with this symbol when necessary for the user manual (refer

to

Table of Contents).

Indicates hazardous voltages.

to

refer

to

the instruction

it

is

f

1,

Indicates earth (ground)

-

The WARNING sign denotes hazard. It calls attention to a

procedure, practice, or the like, which,

or

rectly performed sonal injury. sign until the indicated conditions are stood and met.

operating procedure, practice, or the like, which, not correctly performed or adhered

in

damage product. until the indicated conditions are fully understood and met.

Do

to

Do

not proceed beyond a CAUTION sign

adhered

not proceed beyond a WARNING

The CAUTION sign denotes hazard. It calls attention

or destruction of

terminal.

if

not cor-

to,

could result in per-

fully

to,

could result

part

or

all

under-

to

an

if

of the

a

I

WARNING

Interrupting (inside the protective earth terminal will cause a potential

shock

hazard that could result

(Grounding one conductor of a two conductor outlet

is

not sufficient protection).

Whenever impaired, tive and be secured against any unintended operation.

If

this

transformer (for voltage reduction), make sure the common terminal nal of

Servicing instructions are service-trained personnel only. electric shock, do not perform any servicing unless qualified to do

Adjustments described

formed with power supplied to the instrument

while protective covers are removed. Energy available at many points may, sonal

injury.

Capacitors inside the instrument may still be charged even nected from its source of supply.

For

continued protection against fire hazard, re-

place

the

same current rating and type (for example, normal

blow, time delay, etc.).

or

short-circuited fuseholders.

the

protective (grounding) conductor

or

outside

it

the

instrument

the

power source.

line fuse(s) only with

the

instrument)

is

likely that

instrument

is

to be energized via an auto-

is

connected to the earth termi-

so.

if

the instrument

Do

1

or

disconnecting

in

personal injury.

the

protection has been

must

be made inopera-

for

use by

To

avoid dangerous

in the

if

manual are per-

contacted, result

has

250V

not use repaired fuses

in

been discon-

fuse(s) of the

per-

..

11

Microwave

Converter

MODEL 11793A

Model

11793A

--

IF

INPUT CABLE

(HP Part Number 11 793-60006)

FREQUENCY CONTROL CABLE

(HP Part Number 8120-1838)

LO INPUT CABLE

(HP Part Number 11793-60009)

0

Figure

1.

HP

Model

LINE POWER CABLE

II793A

Microwave

Converter

with

Accessory

Cables

Model

1.

1

1793A

GENERAL INFORMATION

Microwave Converter

This Operating and Service Manual contains information about initial inspection, operation, performance tests, adjustments, troubleshooting and repair of the

2,

Specifications

The

HP 1 1793A

Microwave Converter does not have "hard specifications" against which the instrument can be tested for performance standards or limits. Instead, the Local Oscillator listed in Table

1.

These requirements are the performance standards or limits against which the

instrument can be tested. The supplemental characteristics listed in Table

HP

Model

1

1793A

Microwave Converter.

(LO)

Requirements are

2

are not warranted

requirements but are typical characteristics included as additional information for the user.

LO

Amplitude Range

+8

dBm to

$7

dBm to

0 dBm to

+13 +13

+5

dBm

Table

RF

Input Connector:

LO

Input Connector:

IF

Output Connector:

Frequency

18 18

2.

Supplemental Characteristics

2

(GHz)

to

18

to

26.5

to

26.5

Precision

Type-N female

Rear Panel Control Connector: Dimensions:

Height: Width: Depth:

HP System

Height: Width: Depth:

88

mm

(3.5

425

mm

(16.7

528

mm

(20.8

II

Module Size:

88

mm

(3.5

1

Modular Width

508

mm

(20

in.)

Without Option Without Option

With Option

3.5

BNC

in.)

mm male mm male

female

Conditions

001, 011 001, 011

001, 011

or

or or

021 021

021

1

Microwave Converter Model 11793A

3.

Safety Considerations

This product

Microwave Converter and all related documentation must be reviewed before operation for complete familiarization with safety markings and instructions. Refer to the Safety Considerations page found at the beginning of this manual for a summary of the safety information. Safety information pertinent to the task at hand (that is, installation, operation, performance testing, or service) is found throughout this manual.

Instruments Covered

4.

This instrument has a two-part serial number. The first four digits and the letter comprise the serial

number prefix. The prefix

to the instrument. The last five digits form a sequential suffix which is unique to each instrument. The

contents of this manual apply directly to instruments having the serial prefix listed under Serial Numbers

on the title page.

An instrument manufactured after the printing of this manual may have a serial prefix that is not listed on the title page. This unlisted serial prefix indicates that the manual for this instrument is supplied with a Manual Changes supplement that documents the differences.

In addition to change information, the supplement may contain information for correcting errors in the manual. To keep this manual as current and accurate as possible, Hewlett-Packard recommends that you periodically request the latest Manual Changes supplement. The supplement is identified with the manual print date and part number that appear on the title page. Complimentary copies of the supplement are available on request from your nearest Hewlett-Packard office.

is

a Safety Class I instrument; that is, one provided with a prctective earth terminal. The

by

This Manual

is

the same for all identical instruments; it changes only when a change is made

For information concerning a serial prefix not listed on the title page or in the Manual Changes supplement, contact your nearest Hewlett-Packard office.

5.

Description

The HP Model 11793A Microwave Converter down-converts microwave input signals in the range from

1.3 to 26.5 GHz. For frequencies below 1.3 GHz, signals are routed directly to the input of the measuring

instrument. Instruments suitable for lower frequency measuring are the HP or the HP 8902A Measuring Receiver.

For input signals above 1.3 GHz, the Microwave Converter routes the signal through an internal mixer which mixes the input signal with an external local oscillator. The difference frequency (that is, the intermediate frequency or should be between 10 and 700 MHz.

The Microwave Converter requires a +8 dBm leveled output from the LO. For power above 18 GHz, an optional internal amplifier instrument controls switching of the RF path and of the Microwave Converter.

IF)

is filtered, amplified, and then appears at the

(1

8

GHz to 26.5 GHz) is available. The measuring

LO

amplifier via a rear-panel connection on the

890

1B

Modulation Analyzer

IF

OUTPUT connector. The

LOs

with insufficient

IF

2

Model 11793A Microwave Converter

6.

Options and Accessories

Electrical Options

The options are summarized in Table

Option

001.

010.

011.

020.

021.

Adds an 18 to 26.5

Moves the LO INPUT to the right side of the front panel.

Moves the

LO

amplifier.

Moves all front-panel connectors to the rear panel.

Moves all front-panel connectors to the rear panel and adds the 18 to 26.5 GHz amplif ier.

1

Not

LO

INPUT to the right side of the front panel and adds the 18 to 26.5

LO

Amplifier

installed Standard Option

installed Option

I

3.

The following list describes each option:

GHz

LO

amplifier to the standard instrument.

Table

3.

HP

11

793A Option

Front-Panel Placement Rear Panel

of

LO

Input Placement

Len Side Right Side

001

Option

Guide

010

011

All

Connectors

Option Option 021

GHz

LO

for

020

Mechanical Options

Instruments with Serial Prefix 2407A have System

Instruments with Serial Prefix 2520A and higher have System

METRIC thread.

When ordering Option 907, 908, or 909 for instruments with serial number prefix 2407A (English thread), use the HP part number in parenthesis.

Option standard instrument, order

Option enable mounting a standard instrument, order HP part number 5061-9674 (5061-0074) which has standard 4.45 cm (1.75 in.) hole spacing.

Option and rack-flange kit packaged together. The combination is made up of unique parts which include both functions.

4.45 cm (1.75 in.) hole spacing and is a standard flange.

907

(Front-Handle Kit). Ease of handling is increased with front-panel handles.

HP

part number 5061-9688 (5061-0088).

908

(Rack-Flange Kit). All necessary hardware and

of

the Microwave Converter in a rack with 482 mm (standard 19 in.) spacing.

909

(Rack-Flange and Front-Handle Combination Kit). This kit

To

retrofit a standard instrument, order HP part number

11

cabinet parts and hardware that are English thread.

I1

cabinet parts and hardware that are

To retrofit a

installation instructions are included to

To

retrofit

is

not simply a front-handle kit

SO6

1-9675

(SO6

1-0075) which has

Microwave Converter Model 11793A

Option 907

Front Handle Kit

Figure

Option 908 Option 909

Rack Flange

2.

Rack

Kit

Mounting

Rack Flange and Front

Handle Combination

Options

Kit

Accessories Supplied

The accessories supplied with the Microwave Converter are shown in Figure 1.

The line power cable may be supplied in several plug configurations, depending on the destination of

a.

the original shipment. Refer to the Paragraph 12

b.

Fuses with a 0.7SA rating for both

The control cable

C.

(

HP

part number 8 120- 18 38) is a 30 cm

11

"Power Cables"

5

and 230 Vac (HP part number 21 10-0063) are supplied.

in this manual.

(1

2 in.) flexible cable with male BNC 50 ohm connectors on each end. It connects to the frequency offset mode output of the measuring instrument.

d.

The

LO

cable (HP part number 11793-60009) is a 36 cm (14.5 in.) flexible cable with

LO

female end connectors. The

of

connects to tlie output

the

cable includes a 3.5 mm male to Type-N male adapter. The cable

LO

source. Options

001,

01

1, and 021 delete the adapter.

3.5

mm

e.

The

IF

cable (HP part number 11793-60006)

ohm end connectors. The cable connects to the

4

is

a 25 cm (10 in.) flexible cable with Type-N male

RF

input of the measuring instrument.

50

Model

7.

11793A

Recommended

Test

Equipment

Microwave Converter

Table 4 lists the test equipment recommended to check, adjust, and troubleshoot the Microwave Converter. The Minimum Specifications column describes the essential requirements for each piece of test equipment. If substitute equipment is used, it must meet or exceed the minimum specifications.

Table

4.

Recommended Test Equipment

Instrument Type

Measuring Instrument Sensor Module

Microwave LO Source

Microwave Signal Source

I

[

Instrument Type

Multimeter DC Volts Range: 1OOV

RF Test Equipment

Contains specific circuitry to control the HP 11793A. Must have a frequency range of 26.5 GHz and be compatible

with the measuring instrument. See

LO

Amplitude Range in Table 1, that the required output power depends on the option in the HP

Frequency Range: 2 to 26.5GHz Output Level:

11

-1

To Troubleshoot the Microwave Converter

I

DC Volts Accuracy: 2% AC Volts Range: lOOV AC Volts Accuracy: 10% at 50 Hz

Troubleshooting of the microwave components of the Microwave Converter requires measurements to 26.5GHz of gain or insertion frequency. Instruments which are required to perform these tasks include: signal generators and sweepers, network analyzers, spectrum analyzers, and power meters with accompanying couplers, pads, line stretchers, etc. Select the appropriate equipment and use standard test procedures to make these measurements.

Minimum Specification Suggested Model

HP 8901 B or HP 8902A' HP 11792A'

HP 86738"

HP 86738

793A.

to +1 dBm

LO

Requirements. Note

LO amplifier

Minimum Specification

loss,

SWR,

power, conversion

loss,

I

and

8.

INSTALLATION

9.

Initial

Inspect the shipping container for damage. If the shipping container or cushioning material the shipping materials should be kept until the contents completeness and the instrument has been checked mechanically and electrically. If there

inspection

is

damaged,

of

the shipment have been checked for

is

mechanical damage or if the instrument does not pass the performance tests, notify the nearest Hewlett -Packard office. Keep the damaged shipping materials

(if

any) for inspection by the carrier and a Hewlett-Packard

representative.

5

Microwave Converter Model 1 1793A

10. Power Requirements

The Microwave Converter requires a power source of

20

consumption is

VA maximum.

115,

230 Vac (+lo%,-20%),

48

to 66

Hz.

11. Line Voltage Selection

Before the instrument is plugged in, it must

De

set to the voltage of

the power source, or damage to the instrument may result.

A

line voltage switch enables selection of either 11SV or 230V. The line voltage is indicated on this

rear-panel switch. Slide the switch to the proper line voltage for operation.

12. Power Cables

BEFORE CONNECTING THIS INSTRUMENT, the protective earth

the

terminal of the instrument must be connected to

of

conductor

the (Mains) power cord. The Mains plug shall only

protective

be

inserted in a socket outlet provided with a protective earth contact.

by

The protective action must not be negated cord (power cable) without

a

protective conductor (grounding).

the use of an extension

Grounding one conductor of a two-conductor outlet is not sufficient protection.

Power

This instrument

is

provided with a three-wire power cable. When connected to an appropriate ac power

receptacle, this cable grounds the instrument cabinet. The type of power-cable plug shipped with the

instrument depends on the country of destination. See Table

5

for part numbers

of

the available power

cables and Mains plugs.

13.

Mating Connectors

All coaxial connectors (except the three accessory cables supplied with the instrument listed under Paragraph 6,

RF Input connector should be of the APC

Characteristics

for the correct type and location for mating each connector.

RF

Input) used with the Microwave Converter are provided on the

I'

Accessories Supplied

3.5

mm female

SO

ohm type. Refer to Table

2,

Supplemental

'I.

The

Use the correct torque wrench when installing sub-miniature connectors.

Tighten 3.5 mm connectors to

0.7

Nm

(6.3

connectors to

in.lb).

0.7

N.m (6.3 in.Eb).

Tighten Type-N

6

Model

1

179

3A

Microwave Converter

I

250V

I:".J

00

250V

125V

250 V

z!q

Number

8120-1351 8120-1703

81 20-1 692

8120-1378 8120-1398 8120-1754 8120-1378 8120-1521 8120-1676

8120-2104

Table

0

4

5 5

7

1 6 2

3

2-2.

Description

Straight'BS1363A 90"

Straight'CEE7-Y11 goo

Straight'NEMA5-15P 90" Straight'NEMA5-15P Straight'NEMA5-l5P 90" Straight'NEMA5-15P

Straight'SEVl 01

1959-24507

Type 12

AC Power Cables Available

Plug

1

Cable

Length

(inches)

90 90

79 87

79 79

80 80 36 80 80 36

79

Cable

Color

Mint Gray Mint Gray

Gray Gray

Mint Gray Mint Gray

Black Black

Black Jade Gray Jade Gray Jade Gray

Gray

For

Use

In Country

United Kingdom, Cyprus, Nigeria, Rhodesia,

Singapore

Austrailia,

New Zealand

East and West Europe, Saudi

Arabia, Egypt,

(unpolarized in many nations)

United States,

Canada, Mexico, Japan (1OOV or 200V), Philippines, Taiwan

Switzerland

8120-0698

8120-1957 8120-2956

I

250V

'Part number shown for plug

cable including plug.

E

=

Earth Ground; L = Line;

8120-4211

8120-1860

Straight'NEMAG-15P

6

2

Straight'DHCK107

90"

3

7

Straight'lEC83-B1 79 Black

6

Straig ht'CEE22-VI (Systems Cabinet Use)

is

industry identifier for plug only. Number shown for cable

N

=

Neutral

79 79

~~

United Canada

Gray Gray

is

HP Part Number for complete

Denmark

South Africa, India

States,

7

Microwave Converter Model 11793A

14.

Operating Environment

The operating environment should be within the following limitations:

Temperature Humidity Altitude

15.

Bench Operation

The instrument cabinet system configuration.

16.

Rack Mounting

Rack mounting information is provided with the rack mounting kits. If the kits were not ordered with the instrument as options, they may be ordered through the nearest Hewlett-Packard office. Refer to Paragraph

17.

The instrument should be stored in a clean, dry environment. The following environmental limitations apply to both storage and shipment.

6,

Storage and Shipment

Temperature (Standard) Temperature (Options 001, Humidity Altitude

..........................

..............................

...............................

has

plastic feet which are shaped to insure self-alignment when stacked in a

under "Mechanical Options" for kit information. See Figure 2,

.......................

01

1, and 021)

......................................

.......................................

0°C to +55"C

~95% relative at 40°C

44570 meters

-

....

-25°C to +7S"C

49

5

15

5°C

5%

relative

300

(1

5

000

to

+7

meters

S"C

feet)

(SO

000

Rack

Mounting Options.

feet)

18.

Packaging

Original Packaging. Containers and materials identical to those used in factory packaging are available

through Hewlett -Packard offices. If the instrument attach a tag indicating the type of service required, return address, model number, and full serial number. Also, mark the container instrument by model number and full serial number.

Other Packaging. The following general instructions should be used for repackaging the instrument with commercially available materials.

a. Wrap the instrument

service center, attach a tag indicating the type of service required, return address, model number, and full serial number.)

Use a strong shipping container. A double-wall carton made of 2.4 MPa

b.

adequate.

FRAGILE

in

heavy paper

to ensure careful handling. In any correspondence refer to the

is

being returned to Hewlett -Packard for servicing;

or

plastic. (If shipping to a Hewlett-Packard office or

(350

psi) test material is

8

Model

11

793A

c.

Use enough shock-absorbing material; a instrument to provide a firm cushion and to prevent movement in the container. Protect the front panel with cardboard.

d. Seal the shipping container securely.

7.5

to

10.0

cm

Microwave Converter

(3

to 4 in.) layer around all sides of the

e. Mark the shipping container

19.

Operation

Before the Microwave Converter is plugged in,

FRAGILE

to ensure careful handling.

all

protective earth terminals, extension cords, auto -transformers, and devices connected to

it

should be connected

interruption

of

the protective earth grounding will cause a potential

to

a protective earth grounding socket. Any

shock hazard that could result in personal injury.

Before the Microwave Converter is plugged same line voltage as the power source

or

damage

in,

it must be set

to

the instrument

to

the

may result.

The

HP

11

793A

Microwave Converter is designed to be operated remotely by the measuring instrument in its frequency offset mode. Operation of the Microwave Converter is, therefore, under control of the measuring instrument.

20.

Operating Instructions

To

operate the Microwave Converter, plug

3,

indicated in Figure

Requirements,

for

Microwave Converter Interconnections

LO

power requirements.

This instrument does power indicator light. Power is supplied the power cord is plugged in

in

the power cord and connect the signal and control cables as

and

not

have an

to

the line voltage source.

orl/off

switch

to

the instrument as soon as

Test Set-up.

or

front-panel

Refer to Table

1,

LO

9

Microwave Converter Model

HP

D00000

0

000000

6902A

0000

0

0000

0

0000

00000

0

Q

I

FREPUENCY

OFFSET TTL

FREOUENCY

OFFSET MODE RF

I

INPUT INPUT

MEASURING RECEIVER

OUTPUT

I

:::::

00

0

11793A

OR

SI

1

II

Figure

21.

Panel Features

Front-panel features consist of the and

021,

the connectors are located on the rear panel. See Figure

3.

Microwave Convertor Interconnections and Typical Test Setup

LO

input, RF input, and the IF output connectors. For Options

4,

Front-Panel Features

020

for the

standard locations of front-panel connectors.

Rear-panel features are the Line Voltage Select Switch, Fuse, Power Cord and the Frequency Offset input connectors. See Figure

22.

Operator Checks

5,

Rear -Panel Features.

Operator’s checks consist of insuring that a fuse of proper value is installed, that the power cord is plugged in, that the signal/control lines are connected, and that both the measuring instrument and the external LO

are connected and turned on.

23.

Operator Maintenance

The only maintenance needed by the Microwave Converter is replacement of the primary power fuse.

To replace the fuse, insert a standard screwdriver into the fuseholder and push in against the spring. Turn counterclockwise (while pushing with a slight pressure) until the fuseholder is released. Remove and

a

replace the fuse with

new fuse of identical value.

10

Model

11793A

Microwave Converter

LO INPUT: The LO input, 3.5 mm connector, couples an external oscillator signal source to the instrument.

IF OUTPUT: The Type-N connector, couples the IF output signal into measuring instrument

RF connector couples the microwave

input signal into the instrument. The maximum allowable input power is +30 dBm (lwatt), the input impedance is nominal.

RF

INPUT: The RF input, 3.5mm

input.

IF

output,

50 ohms

RF INPUT is a rear-panel input

RF

for the standard front-panel connection)

for option

signal (instead of the

020,

021 instruments.

T

LO INPUT is a rear-panel input for the LO signal (instead of the standard, front-panel connection) for the option

instruments.

Figure

IF OUTPUT is a rear-panel output for the the standard front-panel connection) for the option 020, 021 instruments.

4.

Front-Panel Features

IF

signal (instead of

I

020,

021

FREQ OFFSET INPUT enables the measuring instrument to control the switching circuitry.

T

LINE VOLTAGE SELECTION

11

5

SWITCH:

LINE VOLTAGE POWER CORD CONNECTION

or 230 Vac

FUSE HOLDER AND

-1

.75A

FUSE

Figure

5.

Rear -Panel Features

11

Microwave Converter Model 1 1793A

24.

Performance Tests

Description

Performance testing consists of a general functional check to verify the instrument down-converts and switches RF paths properly. Since the Microwave Converter is designed to operate with specific HP instrumentation, no substitution is recommended.

Equipment

Measuring Instrument Sensor Module Microwave Microwave Signal Source

RF

Signal Source

Procedure

1.

Connect the equipment as shown in Figure 3. Set the two microwave sources to microwave signal source to

2.

Set the microwave

Znstrument Settings.

LO

Check that the measuring instrument's RF Power calibration factors

match the sensor module. The measuring instrument must be in frequency offset mode in order to enter the factors into the Frequency Offset mode RF Power Cal Factor Table.

.................

.........................

Source

.................

..............

......................

0

LO

source frequency and level as listed in Table

For each setting, perform the following steps:

HP 8901B or HP 8902A HP 1 1 7 9 2A See Table

HP 8673B (up to 26 GHz

HP 8642B, HP 8660C/86602B, HP 8662A,

dBm.

4

HP

8673B Option 008 (up to (w/o Amplifier) HP 8672A Option w/o Amplifier)

NOTE

Amplifier)

008

RF

Power calibration

26

GHz,

(up to 18 GHz,

HP

8663A

6.

Performance Tests

CW.

Set the

12

a. Set the frequency of the microwave signal source as listed.

On the measuring instrument, key in 27.3 SPCL. Key in the frequency of the microwave LO

b.

source (in

c. On the measuring instrument, measure RF frequency and

measuring instrument's display should read as indicated in table nominal value.)

3.

Set the RF signal source

4.

On the measuring instrument, key in 27.3 SPCL and enter 0 MHz. This leaves the measuring

instrument in frequency offset mode with

(in that order).

MHz),

then press the MHz key.

to

1270 MHz. and level - 10 dBm.

RF

Power (in that order). The

6.

(The listed frequency is a

0

MHz offset. Measure RF Frequency and RF Power

Model 11793A

Table

6.

Performance Test Instrument Settings

Microwave Converter

Measuring Instrument

I

Display

Frequency

2

000

10

000

17

200

18

000 000

25

900

25

900

(MHz)

25.

Adjustments

LO

Source

Frequency

10

17 18 18

'Use

"Use this

"'Omit this step if maximum system frequency is

(MHz) I Level

2 063

063 263 063

063

25

963'"

25

963"'

this

level

only if the

level

only if the

I

(dBm)

+8

0'

+8'*

0'

+8"

LO

amplifier is installed (Option

LO

amplifier

is

not installed (Option

Frequency

18

GHz.

2

000

1

0

000

17

200

18

000

18 000

25

900

25

900

001,

(MHz)

001.

Signal Source

level

011

or

021).

011

or

021).

(dBm)

-1

5

-1

5

-1

5

-1

5

-15 18

-1

5

-15

The only adjustment necessary is setting the +12V power supply. Connect a dc voltmeter to the case of

3.)

VR3. (See Service Sheet

+11.9

and

+I21

Vdc.

26.

Replaceable Parts

Adjust AIR5 on the AI Switch Control Assembly until the voltage

is

between

Table 7 lists all replaceable parts

in

alphanumeric order by reference designator. Table 8 contains the

names and addresses that correspond to the manufacturer's code numbers.

27.

Replaceable Parts

Table 7,

Replaceable Parts.

a.

Electrical assemblies and their components in alphanumeric order by reference designation.

Chassis-mounted parts and mechanical parts in alphanumeric order by reference designation.

b.

The following information

List

is organized as follows:

is

provided for each part:

a. The Hewlett-Packard part number.

b.

Part number check digit

(CD).

c. The total quantity (Qty) is provided on the first entry of the part number.

d.

The

description of the part.

e.

A

typical manufacturer of the part in a five-digit code.

f.

The manufacturer's number for the part.

13

Microwave Converter Model 1 1793A

Parts List Updating (Manual Changes Supplement)

28.

Production changes to the instrument made after the publication date of this manual are denoted by a

change in the serial-number prefix. Changes to the parts list are recorded by serial prefix on a Manual

Changes supplement. Also, errors in the manual are noted in the Errata portion of the Manual Changes supplement.

29.

Illustrated Parts Breakdowns

The components that compose the Microwave Converter are illustrated in the component locator diagrams

7

and

in Figure 13, and in the illustrated parts breakdown photographs of Figures

8.

14

Model

Designation

I

A1

R1

RlCl

R1C2

RlC3 RlC4

RlC5 A1C6

R1C7 R1C8

AlCRl RlCR2 RlCR3 RlCR4 R1CR5

RlCR6 A1CR7 RlCR8 RlCRO

RlDSl

RlJl

R1Q1

R1Q2

R1Q3 RlQ4

RlQ5

RlRl

R1R2

R1R3 R1R4 R1R5

RlR6

R1R7 R1R8

R1R9 RlRlO

PlRll

RlR12

R1R13

R1R14 RlR15

RlR16

FllR17 RlR18

RlUl

RlU2 RlU3

RlVRl RlVR2 RlVR3

RlVR4

11793A

Reference

HP

Part

Number

11793-6000: 0120-0197

0180-2302 1400-0249 0180-1794 0160-5098

0160-5098 0160-5098

0160-4832 0160-5555

190

1-002

1901-0028 1901-0050 1901-0050 1901-0050

190 1901-0050 1901-0050 1901-0050

1990-0717 1251-5717 1884-0273

0515-0655 1854- 0477 1854-0477 1854-0477 1854-0477

0757-0821 0698-3442 0698-3442 0698-3442 2100-0568

0698-3150 0757-0984 0698-3150

0757-0438 0698-3150

0757-0444 0698-3150 0698-3150 0698-3150 0698-3150

0698-3150

0698-3150 3826-0191

1820-1417

1826-0367

8

1-

0050

0698-3150

1820-1197 1902-3323

1902-0460 1826-0423 0340-0875 0515-0655 0535-0004 2190-0584 11793-0001

-

1

I

4

8

1

0

3

6

6 4

0

5

3 3

5

3 3

3

6

0

4 4 7 7 7 7

8

9

6

9

1

4

6

3

6

1

6 6

6

6 6

3

6

9

1

6

I

!

I

(

ItY

-

10

Table

7.

Replaceable

Parts

Description

SWITCH CONTROL

1

1 1

1

3

CRPRCITOR-FXD CRPRCITOR-FXO

1

CRPRCITOR-FXD

1

DIODE-PWR RECT 400V 750MR

2

DIODE-PUR RECT 400V 750MF) DIODE-SWITCHING 8OV 200MR

7

DIODE-SWITCHING DIODE-SWITCHING 8OV

DIODE-SWITCHING 8OV 200MR 2NS 00-35 DIODE-SWITCHING DIODE-SWITCHING 8OV DIODE-SWITCHING 8OV

LED-LRMP LUM-INT=800UCD IF=30MR-MRX

1

CONNECTOR 10-PIN

1

4

RESISTOR 1.21K

1

RESISTOR 23i-l% .125W F TC=0+-100

3

RESISTOR 237 RESISTOR 237 RESISTOR-TRMR

1

RESISTOR RESISTOR

1

RESISTOR RESISTOR

1

RESISTOR RESISTOR

1

RESISTOR RESISTOR 2.37K RESISTOR RESISTOR 2.37K

RESISTOR

RESISTOR RESISTOR

IC COMPQRRTOR GP

1

IC GRTE TTL LS NRND QURD 2-INP

1

IC GATE TIL

1

DIODE-ZNR 42.2V 5% 00-35 PD=.4W TC=*.08X

1

DIODE-ZNR 12V

1

IC V RGLTR TO-3

1

INSULATOR-XSTR THRM-CNDCT

1

SCREW-MACH M3 X 0.5 8MM-LG PRN-HD

4

NUT-HFX

2

WASHER-Lk-HLtL 3.0-

2

HERT SINK

1

IC 78M05C V RGLTR TO-39

1

RSSEMBLY

.22UF .OlUF .33UF +-5% lOOVOC

8OV

M

1%

.5W F TC=0+-100

1%

.125W F TC=0+-100

1%

.125W F TC=0+-100

100

10%

2.37K

1%

10

2.37K

5.11K

2.37K

12.1K

2.37K

.125W

1%

.5W F TC=0+-100

1%

.125W F TC=O*-100

1% 1%

1%

1x

1%

1% 1%

1x

DUQL

LS

NRND OUR0 2-INP

5%

DO-35 PD=.4W TC=+.077%

DBL-CHRM

M3

+-lo%

5CVDC CER

+-lo%

lOOVDC CER

00-29

DO-29

2NS 00-35 2NS DO-35

200MA

200MR 2NS DO-35

2NS

ZOOMFI

200MA

2NS

200MA 2NS

POST TWE

C TOP-RDJ 1-TRN

F

TC=0+-100

.125W F TC=0+-100 .125W F TC=0+-100

.125W F TC=0+-100 .l25W F TC=0+-100 .125W F TC=O+-100 ,125W F TC=0+-100 .125W F TC=0+-100

.125W F TC=0+-100 .125W F TC=0+-100 .125W F TC=0+-100

TO-100

X

0.5

2.4MM-THK

MM

3.1-MM-ID

00-35 00-35 DO-35

PKC

Mf

r

Code

28480 56289

56289 06383 56289 16299 16299

16299 28480 28480

28420 28480 28480 28480

28480 28480

28480 28480 28480

28480 28420 3L585

00000 04713 04713 04713 04713

28480 24546 24546 24546 28480

24546 28480 24546 24546

24546 24546

24546 24546 24546 24546

24546 24546 24546

27014

01295 01295

28480 28480 2701r 28481 0000l

00001

28481

04713

Replaceable

Mfr Part Number

11793-60001 150D225X9020R2

39D207G050FJS-DSB PLTlM-8

150D226X9035R2 CRC05X7R224J050R CRC05X7R224J050R

CRC05X7R224J050R

0160-4832

0160-5555

1901-0028

1901-0050

1901-0050 1901-00

50

190

1-

00 5 0

1901-

00

50

1901-0050

HLMP- 150

1251-5717 2N4101

ORDER 2N2222fi 2N2222R 2N2222Q 2N2222A

0757-0821 C4-1/8-TO-237R-F C4-1/8-TO-237R-F C4- 1/8-TO- 23 7R-F

2100-0568

C4- 1/8-TO- 23 71-F

0757-0984 C4-1/8-TO-2371-F

C4-1/8-TO-5111-F

C4-1/8-TO-2371-F

C4-

C4-1/8-TO-23 71-F

C4-1/8-TO-2371-F

C4-

C4-1/8-TO-2371-F ‘4-1/8-T0-2371-F

Lfl319H SN7 4LS2 SN74LSOON

MC78M05CG

1

BY

DESCRIPTION

1/

8-T

0

1/8-TO-

6N

-

12

23 71-F

-F

Parts

-

-.

-

See introduction to this section for ordering information.

f

Indicates factory selected value

15

Replaceable

Reference

Designation

Parts

HP Part

Number

-

- -

1

-

QtY

-

Table

7.

Replaceable Parts

Description

Mf

r

Eode

Model

11793A

Mfr Part Number

FIT

1

F1

FL1

J1

J2

J3

J4

J5

J6

J7

J8

J9

J10

ZS2OA

MPI

MPZ

24071

HP

MP

I

2

AND

ONLY

ABOVE

11793-60003 2110-0063

2110-0566 2110-0565 2110-0569 2190-0068

9135-0229 1400-0025 0515-0381 0535-0006 2190-0586 3050-0893

08673-60040 2190-0016

2950-0043

11793-60008 1250-0914

1250-0915 5040-0306 08671-2027 08555-20093 08555-20094 2190-0104 2950-0132

08673-60040 2190-0016

2 950- 0 043 08673-6004C 2190-0016

2950- 0043 08673-6004C

2190-0016 2950-0043

08673-6004C

2190-0016

2950-0043 11793-60001 1250-0914

1250-0915 5040-0306 08671-2027 08555-2009: 08555-2009d 2190-0104

2950-0132 1250-0870

5 021- 5801

0515-1227

5021-5832

0515-1331

5020-8801

0515-1227 5020-8832 2510-0192

3

DB RTTENURTOR

1

6

FUSE .75A 250V NTD 1.25X.25 UL

1

2

0

9

3 5

1

0

3

1

2

9

9 3

8

1

7

8 0

5

6 0 6

9 3

8 9

3

8 9

3

8

9 3

8

1

7

8 0

5

6 0 6

4

0

8

7

5

4

8

1

6

FUSEHOLDER-EXTR POST 12R 250

1

FUSEHOLDER CAP 12R MRX FOR UL

1

FUSEHOLDER COMPONENT NUT; THRERD M12.7

1

WASHER-LK INTL T 1/2 IN ,505-IN-ID

1

FILTER-LOW PRSS

1

CLAMP-CRBLE .5-DIR .5-WD NYL

2

SCREW-MRCH M4 X 0.7 10MM-LG PAN-HD

17

NUT-HEX OBL-CHRM M4 X 0.7 3.2Mfl-THK

1

WASHER-LK HLCL 4.0

22

WRSHER-FL MTLC 4.0

3

CONNECTOR ASSEMBLY "LO INPUT"

5

(LEFT SIDE: STRNDRRO ONLY)

WASHER-LK INTL T 3/8 IN ,377-IN-ID

5

NUT-HEX-DBL-CHRM 3/8- 32-THD

5

CONNECTOR ASSEMBLY TYPE-N "IF OUTPUT"

_.

2

(STRNDRRD

CONNECTOR-RF RPC-N FEM UNMTD 50-OHM

2

TONTFITT-RF CONN

2 2

2

BODY, BULKHERD

2

WRSHER-LK INTL T 7/16 IN .439-IN-I0

2

NUT-HEX-DBL-CHRM 7/16-28-THD .094-IN-THK

6

CONNECTOR QSSEMBLY

(STANDARD AND OPTION WASHER-LK INTL T 3/8 IN ,377-IN-ID NUT-HEX-DBL-CHAM 3/8-32-THD .094-IN-THK

CONNECTOR QSSEMBLY "LO INPUT"

(RIGHT SIDE: OPTION

WASHER-LK INTL T 3/8 IN .377-1N-ID

NUT-HEX-DBL-CHAM 3/8-32-THD ,094-IN-THK

CONNECTOR ASSEMBLY "RF INPUT"

(REAR PRNEL: OPTION 020 ONLY) WRSHER-LK INTL T 3/8 IN ,377-IN-ID NUT-HEX-DEL-CHRM 3/8-32-THD .094-IN-THK

CONNECTOR ASSEMBLY "LO INPUT"

__

-

(RERR PANEL: OPTION 020 ONLY) WASHER-LK INTL T 3/8 IN ,377-IN-ID NUT-HEX-DBL-CHRM 3/8-32-THD .094-IN-THK

CONNECTOR ASSEMBLY TYPE-N "IF OUTPUT"

(RERR PRNEL: OPTION 020 RND 021 ONLY)

CONNECTOR-RF APC-N FEU UNMTD 50-OHM

CONTACT-RF CONN SER RPC-N FEMRLE

INSULRTOR

INSULATOR

CONTACT JRCK

BODY, BULKHERO

WASHER-LK INTL T 7/16 IN ,439-IN-IO

NUT-HEX-DBL-CHRM 7/16-28-THD .094-IN-THb

CONNECTOR-RF BNC FEM SGL-HOLE-RR 50-OHM

1

FREQUENCY OFFSET INPUT"

PART OF W12 (NOT SEPRRRTELY REPLRCERBLE

PRRT OF

REPLACEABLE)

FRRME FRONT

1

SCREW-MRCH

6

SIDE STRUT

2

SCREW-MACH M4

8

FRONT FRAME

1

SCREW-MFICH M3 X 0.5 6MM-LG 90-DEG-FLH-HI

6

SIDE STRUT

2

SCREW-MACH 8-32 .25-IN-LG

8

DC

TO

MM MM

AND

OPTION

010

SER

RPC-N FEMRLE

"RF

010

___

~~

WlO/W11

(NOT SEPARRTELY

M3

X 0.5 Sflfl-LG 90-DEG-FLH-HD

X

0.7 6MM-LG FLRTHD

800MHZ;

4.1-MU-ID

4.4-MM-ID

.09

ONLY)

INPUT"

ONLY)

100

V

M/F

4-IN-THK

DEG

SUR

28480 28480

28480 28480 28480 28480

28480 28480

00000 00000

28480 28480

28480

00000

28480 28480

9D949 28480 28480 28480 28480 28480

00000

2848C 2848C

ooooc

2848C 2848C

ooooc

2848C 2848(

OOOO(

2848( 2848(

OOOO( 2848( 2848(

9D94! 2848t 28481 28481 28481 28481 00001

28481

28480

00000

28480

00000

28481

2848

28481

0000

11793-60003 2110-0063

2110-0566 2110-0565 2110-0569 2190-0068

9135-0229 1400-0025 ORDER BY DESCRIPTION ORDER BY DESCRIPTION

2190-0586

3050-0893 08673-60040 2190-0016

ORDER BY DESCRIPTION 11793-60008

1250-0914 131-149 5040-0306

08671-2027 08555-20093

08555-20094

2190-0104 ORDER BY OESCRIP

08673-60040

2190-0016 ORDER BY DESCRIPTION

08673-60040

2190-0016

ORDER BY DESCRIPTION

08673-60040

2190-0016

ORDER BY DESCRIPTION

08673-60040 2190-0016

ORDER BY DESCRIPTION

11793-60008 1250-0914

131-149 5040-0306

086

7 1-2 027 08555-20093 08555-20094

2190-0104

ORDER BY DESCRIPTION

1250-0870

5021-5801

ORDER BY DESCRIPTION

5021-5832

ORDER BY DESCRIPTION

5020-8801

0515-1227

5020-8832

ORDER BY DESCRIPTION

TION

16

See

introduction

-

to

this section for ordering information.

*

Indicates factory selected value

Model

Reference

Designation

11793A

HP Part

Number

-

u

3

-

Table

7.

Replaceable Parts

Description

Replaceable

Mfr Part Number

Parts

2401AOWLY

MP3

MP4 MP

5

2520.4

AWD ABOVE

MP6

MPl MPB

21071

OWLY

MP6

MP1

MP8

MP9

MPlO

25201

AWD ABOVE

WPll

24014

ONLY

MPll

MP12 NP13

NP14

MP15 MP16

MP17

MP19

NP20

MP21 MP22 MP2 3

NP24 MP25

s1

52

T1

5020-8802

0515-0680

0590-1203 5040-7202 5001-043a

5

06

1-

943

5061-9452

11793-20001

5060-9a35

50.so-ga52

5061-9447

5

11793-0000 11793-0000 11793-0001 11793-0000

5060-9847

5040-7201

11793-0000

03ao-i705

0515-0381

2190-0586

11793-2000

05i5-03ai

2i90-05a6

8160-0472

11793-0000

0515-0381

2190-05a6

11793-0001

05i5-06ao

11793-0000 0515-0373 0520-0130 2190-0045 2190-osa4 3050-009a 3050-0891 3050-0893 11793-0001

11793-0000 05i5-03ai 2i90-05a6 6960-0023 6960-0009

11793-200C 11793-6001: 0515-0446

11793-6OOC

0515-0446

9100-4014 0515-1137 2igo-osa4 3050-0agi

7120-4559

a

5

a

9 7

l

3

l

0

1

9

2

1

0

?

4

a

0

3

2

4

3

2

8

9 3

2

3

5

4

3

1

a

0

6

7 9

6

3 3

2

9

1

6

5

1

5

1

7

9

0

7

5

SCREW-MRCH M3 X 0.5 6MM-LG PAN-HD

12

THREROEO INSERT-NUT M3X0.5 ,059-IN-LG

TOP TRIM STRIP

1

SIDE TRIM 3

2

COVER, TOP

1

COVER, SIDE RERR PRNEL RSSEMBLY

1

TOP COVER

1

SIDE COVER

2

RERR PRNEL

1

FRONT DRESS PRNEL

1

(EXCEPT OPTIONS

FRONT DRESS PRNEL

1

(OPTIONS

FRONT SUB-PANEL

1

COVER. BOTTOM

1

BOTTOM COVER

1

FOOT FULL-l/2MOD

1

MRIN DECK

1

STANOOFF-1/4 TURN 6.35

3

SCREW-MRCH WASHER-LK HLCL 4.0 NIXER HOUSING

1

SCREW-MRCH WgSHER-LK HLCL RFI STRIP

RF COVER

1

SCREW-MRCH WASHER-LK HLCL 4.0 RMPLIFIER BRACKET (OPTIONS

1

020

ONLY)

SCREW-MRCH M3 X MIXER BRACKET

1

SCREW-MACH M3 X

2

SCREW-MRCH 2-56 .375-IN-LG PRN-HO-PO21

4 4

12

2

a

1

TRRNSFORMER BRRCKET

1

2

NOT ASSIGNED NOT RSSIGNEO

GRONNET, SEMI-RIGID CRBLE

3

CORXIRL SWITCH (OPTIONS

2

ONLY) SCREW-MACH M3 X

6

CORXIRL SWITCH (EXCEPT OPTIONS

AND

SCREW-MRCH M3 X TRRNSFORMER PWR 115/230V

1

SCREW-MRCH M3 X

4

WASHER-LK HLCL 3.0 WRSHER-FL MTLC 3.0 LABEL-WRRNING .S-IN-WO 1-IN-LG MYLRR

2

021)

1/2

010

FIND

010

RNO

011

ONLY)

M4

X 0.7 10MM-LG PAN-HD

MM

MD

M4

X 0.7 10MM-LG PAN-HO

4.0

(*

M4

HLCL HLCL MTLC MTLC MTLC ERR

MM

ORDER QTY 2 FT)

X 0.7 10MM-LG PRN-HO

MM

0.5

SMM-LG PRN-HD

0.5

10MM-LG PRN-HO

2

.oaa-IN-Io

NO.

MM

3.0

2

.094-IN-I0

NO.

MM

3.0

MM

4.0

0.5

22MM-LG PRN-HO

0.5

22MM-LG PAN-HD

0.5

50MM-LG PRN-HO

MM

011)

MM

4.1-MM-ID

4.1-MM-IO

3.1-MM-ID

3.3-MM-ID

4.4-MM-IO

001,

3.1-MM-ID

3.3-MM-IO

LG:

001,

10.16

011

001,

AN0

MM

RND

021

011

RERR FRRME

1

5020-8802

0515-0680

0590-1203 5040-7202 5001-0438

5061-9435 5061-9452 11793-20009

5060-9835 5060-9a5~ 11793-00004

11793-00005

11793-00012

11793-00003

5061-9447

5060-9847

5040-7201

11793-00001

03ao-i705 ORDER BY DESCRIPTION

2190-05a6

11793-20005 ORDER BY DESCRIPTION

2190-05a6

8160-0472

11793-00002

ORDER BY DESCRIPTION

2190-0586

11793-00014

0515-0680

11793-00007

ORDER BY DESCRIPTION

2190-0045

2190-0584

3050-009a

3050-0agi

3050-0a93

11793-00017 11793-00006

ORDER BY DESCRIPTION

2190-05a6

6960-0023 6960-0009

11793-20007 11793-60002

0515-0446

11793-60002

0515-0446

9100-4014

0515-

1137 2i90-05a4 3050-0891

-

See introduction to this section

for

ordering information.

*

Indicates factory selected value

17

Replaceable

Reference

Designation

Parts

HP

Part

Number

-

I

3

-

Table

7.

Replaceable

Description

Parts

Mf

r

Code

Model 1 1793A

Mfr Part Number

u1

U2

u3

w1

w2

w3

w4

w5

W6

w7

W8

w9

w10

w11

w12

W13

W14 W15 W16

W17 W18 w19

w20

w21 w22

0955-0218 0520-0130

0955-0237 0520-0133

2190-0045

2950-0132 0955-0217

0515-0680 2190-0584 3050-0891

11793-20002

11793-20003

11793-20004

11793-20101 11793-20103 11793-20102

11793-60013 11793-60013 11793-20104

11793-60011 0515-1084

0535-0004 2190-0584 11793-60012

11793-60007 0535-0004 2190-0584

11793-60010 1250-0952 1250-0958 1250-0960 1250-0964 1400-0025 2190-0102 2950-0035

11793-20106 11793-20107 11793-20108

11793-20109 11793-20110 11793-20111

11793-60009 11793-60006 8120-1838

7

1

0

4

8

6

5

0

7

1

2

3

1

3 2

8 8

4

6

5 9

0

7

0

9

0

5 3 9 3

7

0 8

8

S1

28480 00000

28480

00000

28480 28480 28480 28480

28480 28480

28480

28480 28480

28480

28480 28480

00000 28480 28480

28480

00000

28480 28480 24931 24931 28480 24931 28480 28480

00000 28480 28480 28480

28480 28480 28480

28480 28480

2848C

RMPLIFIER-MICROWRVE FREQ RRNGE: l8GHZ TO

1

(OPTIONS

SCREW-MRCH 2-56 .375-IN-LG PRN-HO-PO21

AMPLIFIER-RF

1

SCREW-MRCH 2-56 .5-IN-LG PRN-HO-PO21

2

WRSHER-LK HLCL NO. 2 .088-IN-I0 NUT-HEX-OBL-CHRM 7/16-28-THO ,094-IN-THK

MIXER-MICROWFIVE FREQ RRNGE: LO: 2.0GHZ

1

SCREW-MRCH M3 X 0.5

WRSHER-LK

WRSHER-FL MTLC 3.0 LO INPUT CRBLE, SEMI-RIGID:

1

(STANORRO ONLY)

IF OUTPUT CRBLE, SEMI-RIGID: J2 TO S2

1

ISTRNORRO

nNi

RF

1

(STRNORRD RND OPTIONS

ONLY)

001,

011

RND 021 ONLY)

MOD.

__

HLCL

v\

RNO

iNPUT CRBLE, SEMI-RIGIO: J3 TO 52

SMR

-

6MM-LG PRN-HO

3.0

nn

MM

OPTIONS

3.1-MM-IO

3.3-MM-ID

J1

001.

010

001,

010

TO U3

RNO

FINO 011

011

1

MIXER OUTPUT CRBLE RSSEMBLY, FLEX-CORX

2

(912): U3 TO FL1

:F

RMPLIFIER OUTPUT CABLE RSSEMBLY,

1

FLEX-CORX (912): U2 LO RMPLIFIER INPUT CRBLE, SEMI-RIGID:

1

TO U1 (OPTIONS MODULE HRRNESS RSSEMBLY (STRNORRO AN0

1

OPTIONS SCREW-MACH

4

NUT-HEX OEL-CHRM M3 X 0.5 2.4MM-THK WRSHER-LK MODULE HRRNESS RSSEMBLY (OPTIONS

1

011,

MoouLE

1

NUT-HEX DBL-CHRM 113 X WRSHER-LK HLCL 3.0 CRBLE RSSEMBLY. CORX:

1

COiVRCT-RF CONN BNC/TNC:FEM CTR

1

BUSHING RF CONN BNC/TNC: FOR INTL

1

SLEEVE-RF CONN

1

NUT-RF

1

CLRMP-CRBLE .5-DIR .5-WD NYL

WRSHER-LK INTL T 15/32 IN .472-IN-I0

1

NUT-HEX-DBL-CHAM 15/32-32-THO

1

6

7

8

9 2 3

2 9

8

LO INPUT CABLE, SEMI-RIGID:

1

(RIGHT SIDE: OPTION

RF INPUT CRBLE, SEMI-RIGID: J5 TO

1

(OPTIONS 020 AND 021 ONLY)

IF OUTPUT CRBLE, SEMI-RIGID: J7 TO 52

1

(OPTIONS 020 RND 021 ONLY)

LO

1

(OPTION 020 ONLY)

LO INPUT CRBLE, SEMI-RIGID:

1

(OPTION 021 ONLY)

LO INPUT CRBLE, SEMI-RIGID: J4 TO

1

(RIGHT SIDE: OPTION LO INPUT CRBLE, FLEX: 35MM MRLE

1

(ACCESSORY)

IF

1

CRBLE RSSY-COAX 50-OHM 12-IN-LG

1

(ACCESSORY)

010

RND 020 ONLY)

M3

HLCL

AN0 021 ONLY)

CRBLE,

CONN

BNCITNC:

INPUT CRBLE, SEMI-RIGID:

OUTPUT

(RCCESSORY)

CABLE.

TO

S2

001.

011

RND 021 ONLY)

X

0.5

12MM-LG PRN-HO

3.0

nn

3.1-MM-ID

FLRT:

~i~i

TO

0.5

2.4MM-THK

MM

3.1-MM-ID

38

TO

SER

BNC/TNC

cLRnP

011

ONLY)

010

ONLY)

FLEX:

SM

MRLE

~9

R1

NUT

J4

36 J6

001,

FOR

TO

J

S1

u3

s1

u3

GK

0955-0218

ORDER

BY DESCRIPTION

0955-0237 ORDER BY DESCRIPTION 2190-0045 ORDER BY DESCRIPTION

0955-0217 0515-0680 2190-0584 3050-0891

117 93- 20002 11793-20003

11793-20004

11793-20101 11793-20103 11793-20102

11793-60013 11793-60013

11793-20104

11793- 60011

0515-1084 ORDER EY DESCRIPTION

2190-0584

11793-60012

11793-60007

ORDER

BY DESCRIPTION 2190-0584 11793-60010 C232-2

CS

105-3 1250-0960 N126-2 1400-0025 2190-0102 ORDER BY DESCRIPTION

11793-20106 11793-20107 11793-20108

11793-20109 11793-20110 11793-20111

11793-60009 11793-60006

8120-1838

18

-

See introduction to this section for ordering information.

*

Indicates factory selected value

Model

1

1793A

Table

8.

Code List

of

Manufacturers

Microwave Converter

Mf

r

Code

Manufacturer Name

ANY 6ATISFACTORY SUPPLIER TEXAS INSTR INC SEHICOND CBPNT DIU BOTOROLA SEBICONDUCTOR PRODUCTS PANDUIT CORP CORNING GLASS CORNING GLASS SPECIALTY CONNECTOR CO INC

NbTIONnL

HEULETT-PACKARD RCA CORP SOLID STATE DIV

SPRhCUE ELECTRIC CO

AHPWENOL SALES DIU

UKS

COHPONENT DIU

WORKS

(BRADFORD)

SEBICONDUCTOR CORP

CO

CORPORATE

OF

BUNKER-RABO

HQ

Address

DALLAS TX PHOENIX TINLEY PARK

RALEIGH

BRADFOR D PA GREENWOOD IN

SANTA CLARA

PAL0

ALTO CA SOMERUILLE NORTH

ADABS

BROADUIEW

A,?

11..

NC

CA

NY

HA

IL

Zip Code

75222

75222 85008

85008 60477

60477

27604

16701

46227

95051

94304

94304 01247

01247 60153

60153

I

19

Microwave Converter

M P8

Model

11793A

NOTE:

MP7\\\

MP21

AND

ARE

HOLE PLUGS.

MP22

MP12

MPlO

1 1

,/

/MP9

20

Figure

6.

Cabinet Parts

Model

11793A

J1 W17 (Option 020) MP25 (Under MP18) MP18 MP25 W3 AT1 W2 MP25 J2 J3

MP14

W1 (Standard)

W19 (Option 010) u3

\

Microwave Converter

\

\Ill///

52

MPl5

(Gasket)

w7

w12

A1

W13

MP20

w10

J10

W8

u2

MP13

MP16

T1

F1

Figure

7.

Illustrated Parts Breakdown

for

Standard and Option

f11

010

21

Microwave Converter

J1

(1

Dption

001

J4

(I

3ption

J6

(I

3ption 021

only) W4 (Option

011

only) W14 (Option 011 only)

s1

MP14

MP15

(Gasket)

001

only)

W6

I

u1

Model

MP18

I

/

u3

(Under

W3 W2 J2

/

,w11

eJ11

52

W8

11

793A

A1

MP20-

W13’

T1

F1’

,

w7

u2

MP13

f11

MP16

22

Figure

8.

Illustrated Parts Breakdown

for

Options

001,

and

0

I I

Model 11793A Microwave Converter

30.

Ordering Information

To

order a part listed in the replaceable parts table, include the Hewlett-Packard part number (with the check digit) and the quantity required. Address your order to the nearest Hewlett-Packard office. The check digit will ensure accurate and timely processing of your order. To order a part that is not listed in the replaceable parts table, include the instrument model number, instrument serial number, description and function of the part, and the quantity of parts required. Address the order to the nearest Hewlett -Packard office.

31.

Manual Changes

These paragraphs contain manual change instructions for backdating this manual for HP Model Microwave Converters with the serial number prefix 2407A.

Instruments with Serial Prefix 2407A have System I1 cabinet parts and hardware that are English thread. Instruments with Serial Prefix 2520A and higher have System I1 cabinet parts and hardware that are METRIC thread.

In Table cabinet parts. These correct part numbers are referenced under the instrument’s serial number prefix.

Instruments with the serial number prefix 2407A have MP3 (rear frame), MP8 (rear panel), and associated english thread hardware, that are screwed together. These parts have been changed to a riveted, one piece

assembly that

1

1793-20009, and the metric screws for the side struts and rear feet.

32.

33.

Simplified

A

simplified block diagram of the Microwave Converter is shown in Figure INPUT connector is routed through an input switch either to the Direct Path (and out the IF OUTPUT connector), or to the Down-Convert Path. The Down-Convert Path has a

input mixing process while passing the difference component), and a

through the Down-Convert Path).

7.

Replaceable

is

SERVICE

Principles of Operation

Block

SWR),

Diagram

a

Mixer (tte down-converter), an IF Low-pass Filter (to remove the

PUY~S,

referenced to MP8. To replace MP8 you must order the Rear Panel Assembly

both English and Metric thread part numbers are listed for the System I1

10.

The signal at the RF

3

dB RF Attenuator (to improve

sum

component of the

+1S

dB IF Amplifier (to restore signal loss

1793A

Usually, the instrument assumes this.) The difference frequency (the IF) is filtered by the IF Low-Pass Filter, which has a

3

If the instrument has the optional LO Amplifier installed, the measuring instrument automatically switches in the amplifier whenever an LO frequency greater than

LO

frequency selected is higher than the frequency of the input signal. (The measuring

dB corner of

800

MHz. The IF should be kept between the range of 10 and 700 MHz.

18

GHz is selected.

23

Microwave Converter Model 1 1793A

Service Sheets 1 and 2 (Input Signal Down-Converter)

A single input on the rear panel: the FREQ OFFSET INPUT, has three logic states which control both the switching of the RF two paths, and the insertion of the optional LO Amplifier. The Level Comparator

senses the three states and drives the appropriate switches.

Service Sheets Service Sheet

1

and 2 are the schematic diagrams of the RF circuitry of the Microwave Converter.

1

(SS

1)

documents the standard Microwave Converter (without the LO Amplifier option),

and Service Sheet 2 (SS2) documents the Microwave Converter with the LO Amplifier.

The operation of the RF components Diagram above. Note that the RF switches

is

discussed in the principles of operation for the Simplified Block

(SI

and S2), shown in the schematic, automatically interrupt

the current flowing into the energized solenoid once the plunger switches the RF contacts. The plungers

latch via permanent magnets.

Service Sheet 3 (AI Switch

Control

Assembly)

The Level Comparator (UIA and U1B) and Decoder (U3A, U3B, and U3C) decode a three level input (through the rear-panel FREQ OFFSET

INPUT

connector) into binary levels that control the

RF

switches

(see SS1 and SS2). The AND gates (U2) are simply open-collector inverters,'which drive the transistors

43,

(42, decoding

44, QS) to switch on and energize the solenoids of the RF switches. Table 9 summarizes the

.

Level

at

RF

Path

LO

Amp

FREQ

OFFSET

U1A U1B U3A

6

1

Pin 3

U3B

6

U3C

8

Q2

Q3

Q4

Q5

INPUT

Direct out Down-Convert In Down-Convert

Out

<2.0v

2.0 to

>3.av

3.w

H H L

L

H

H H

L L

H

L

H On On L

Off

Off On On

On

Off

On

The power supplies used are:

m

The unregulated +26V supplies drive current to the RF switch solenoids, and

+

12V Regulator.

8

The regulated

+

12V

well as the reference from which both the Level comparator references are derived, and the RF Amplifiers are powered.

e

The regulated +SV supplies current to most logic devices.

Either the exceed +42 or

24

+26

or +12V supply can trigger the Over-Voltage Protection should the respective voltage

+

12V. LED DS 1 gives an indication that the supply is nominally operational.

is

the only adjustable supply. It

is

the current input to the

is

the input to the

+SV

Regulator as

Model

34.

11793A

Troubleshooting

Microwave Converter

General

Primary

AC

power is present within instrument when line voltage

power cord is connected to the instrument.

Maintenance described herein is performed with power supplied to

the instrument and with protective covers removed. Such maintenance should be performed only by service-trained personnel who are aware of the hazards involved.

Use the correct torque wrench when installing sub -miniature

connectors.

Do

not

exceed the following torque settings for this instrument:

1.5

N.m for the

2.0

N.m

0.7

N.m

0.7

N’m

for the

(6.3

3

mm

(TlO) screws

4

mm

(T15) screws

in.lb) for

SMA

connectors

in.lb) for Type-N connectors

Troubleshooting information is broken down into three categories:

0

RF

devices,

control devices, and

0

power supplies.

Either a compatible measuring instrument or a power supply connected to the be used to control the

RF

switches. If a power supply is used, set it to

0,

+3,

or

9.

FREQ OFFSET

+S

Vdc as dictated by Table

INPUT,

can

2s

Microwave Converter Model 1 1793A

RF

Devices (Service Sheets

1

and

2)

Because of the diversity

of

test equipment and techniques available

for

troubleshooting the

high-frequency devices, no specific procedures are given. Check the performance parameters of the

devices against the following table, Table

Device

AT1 3 dB Attenuator

FL1 Low-Pass Filter

s1,

s2

Switch

u1

LO

Amplifier

u2

IF

Amplifier

u3

Mixer

10.

Also check connectors and cables.

Table

10.

Performance Parameters

Attenuation:

SWR:

3 dB Corner: Passband Insertion

Insertion Loss:

SWR:

Frequency Range: Gain:

SWR:

Frequency Range: Gain: 14 dB

SWR:

LO Frequency Range: 2 to RF

Frequency Range: 1.3 to LO Power: Conversion Loss:

SWR:

2.5

2.0

4.251

<2.0:1

>11

dB

C2.51

<1.8:1

>+8

<4:1

to 3.5 dB at 18 to

4.0

at

26.5

900

to

Loss:

4.5

at

26.5

18

10

dBm

<lo

to

dB at

26.5

GHz

~~ ~~

1100

MHz

<0.25

dB at

26.5

GHz

to

26.5

GHz

to

700

MHz

26.5

dB

Check

GHz

dB at

GHz

800

MHz

RF

Control Devices (Service Sheet

3)

Set a power supply to 0 Vdc and connect it to the FREQ OFFSET INPUT connector. Set the supply to

+3,

and

+S

Vdc respectively, and compare the logic levels

of

the logic devices with those listed in Table

When specifically checking the drive transistors 42, Q3,Q4, or QS, note the following:

The switch solenoids automatically disconnect after completion of switching. Therefore, distinguish between a drive transistor that drawing current. The collector voltages will differ by only a few to be working, compare the on and

off

is

on but not drawing current, or one that is off and not

mV.

If any of the transistors are known

voltages of the suspected transistor against those of a known

it

is difficult to

good

one.

Power Supplies (Service Sheet

Check the points indicated in the schematic diagram for dc level and ac ripple. Note that the

3)

+SV

Regulator is dependent on the + 12V Regulator.

0,

9.

26

Model

Equipment

11793A

Microwave Converter

Refer to Table

35.

Repair

Cleanliness

Do not handle the A1 Switch Control Assembly ,,oard more than necessary. hands comes in contact with the circuit side of the A1 board, the circuits may become inoperative. use solder flux remover on the circuit board.

36.

Cleaning the Control-Line Switch Contacts

These instructions pertain to switches (standard and

4,

Recommended Test Equipment.

S1

(in instruments with the

LO

amplifier option configuration) located within the

If

dirt or moisture from the

LO

amplifier option), and/or

RF

module. See Figure

9,

Contact Location.

TERMINAL

SPRING CONTACT

SWITCH.

CONTACT

\

1

TERMINAL C

SPRING CONTACT

/

TERMINAL

2

Do

not

S2

Switch

CR2

Figure

Remove the switch from the

1.

procedures.

2.

Remove the two screws on the switch cover and remove the cover.

3.

Saturate the edge of a sheet

9.

Switch Contact Location

RF

module. Refer to Paragraphs

of

durable paper with alcohol.

39

or

40,

RF

Module disassembly

27

Microwave Converter Model 11793A

4.

Insert the paper under one of the contacts, and while pressing gently on the contact, slide the

paper through.

to shred.

5.

Saturate the edge

6.

Remove any shreds of paper that may have lodged in the contacts.

7.

Reinstall the switch cover. Note the orientation of the feedthrough terminals on the cover with respect to the switch contacts.

8.

Replace the switch according to Paragraphs 4 1 or 42, RF Module assembly procedures.

37.

Instrument Disassembly Procedure

The 11793A Microwave Converter uses metric connecting hardware in the form of 3 mm (T10) and 4 mm (TlS) Torxhead screws (except for two small English thread Pozidriv screws mounting U1 to MP17). Use the Torxhead size T 1 The recommended torque wrench for use with the Torxhead bits

8 7 3

0-00

12.

Do this several times and repeat for the other switch contact.

Do

not allow the alcohol to run inside the switch assembly.

of

another sheet of paper with a freon-type degreaser and repeat step

0

and T 1 5 bits that are provided, to disassemble and re-assemble the instrument.

may

be

Do

ordered as

not

allow the paper

4.

HP

part number

The major component blocks of the 11793A Microwave Converter are MP14 (RF Signal Processing

RF

Module), A1 (A1 Switch Control Assembly), and T1 (Power Transformer). The assembly are mounted on MP13 (the Main Deck). The power transformer is mounted on MP2, the instrument chassis left side strut. See Figures

Note that Option 020 and 021 instruments differ from the standard and other option models main deck and transformer locations inside the instrument are reversed when compared to the standard and other option models as shown in Figures 7 and the rear of the instrument), and the transformer is mounted in the front left corner.

The following procedures allow the removal of the Microwave Converter components from within the

instrument chassis.

1.

Remove the top and bottom covers by loosening the screw in the middle of each cover rear edge. These are captive screws and will cause the cover to push away from the front frame. Slide each cover toward rear of the instrument to disengage, then lift up and away from the instrument.

2.

Remove the side covers in the same manner as that of the top and bottom covers.

3.

Remove the plastic trim from the top of the front frame by inserting a screwdriver into the rear slots and gently prying up the strip.

4.

Disconnect

J8

on the rear panel by removing the

6,

7,

and 8 to locate and identify parts and assemblies.

8.

In Option 020 and 021 models, the RF module

9/16

inch retaining nut and lock washer.

module and the A1

in

that the

is

in

28

5.

Instruments with serial number prefix frame). To remove the rear frame, unscrew the four corner screws that connect MP2 (side struts) to MP3. Pull off the two wires

of

(both wires are

For instruments with serial number prefix 2407A, remove MP8 (back panel) from MP3 (rear frame) by unscrewing eight screws. Pull off the two wires the LINE VOLTAGE switch (both wires are of the quick disconnect type).

the quick disconnect type).

05

and 0 (black/green and black) on the LINE VOLTAGE switch

2S20A have MP8 (back panel) riveted to MP3 (rear

OS

and 0 (black/green and black) on

Model 11793A Microwave Converter

6.

Turn the instrument around Desolder the 6, 5, 4, and

To

7.

8.

9.

remove MP20 (mounting bracket). Separate transformer and the mounting bracket long screws passing through the transformer case.

To remove the A1 assembly disconnect W12 (gray ribbon cable) at AlJl board connector, unscrew the two screws at the VR3 heat sink, and turn the three board mounting stand-offs a

1/4 turn counterclockwise.

To

remove MP 13 (main deck) and MP the top and bottom of MPl (front frame). Remove the MP13 (main deck). While supporting MP9, MPlO (front- and sub-panel) in one hand, carefully slide MP13 (main deck) forward through the front frame opening just enough to reach the inside cable connections.

T1

power transformer and its mounting bracket, unscrew the four screws located on

so

that the front of the instrument faces to the operator's left.

0

(blue, green, yellow, and black) wires from the A1 assembly.

by

removing the four

14

(RF

module), remove the six Torxhead screws located on

six

screws connecting MP2 (side struts) to

Be careful that

or

interference

a. When inside connections can be reached, use a

semi-rigid coaxial cables from the front -panel connectors.

b. Carefully set aside the front panel and slide the main deck assembly out

chassis.

To

remove the main deck on Options 020 and 021, disconnect the input cable connectors at the back panel. Remove the main deck screws, then lift one side of the Main deck up until it clears the side strut.

To

10.

38.

Instrument

Note that Option 020 and 021 instruments differ from the standard and other option models in that the main deck and transformer locations inside the instrument are reversed, when compared to the standard and other option models as shown in Figures 7 and the rear of the instrument), and the transformer is mounted in the front left corner.

remove MP14

module to the main deck.

Assembly

you

do not bend the coax cables. Possible attenuation

of

the

RF

signal may result.

5/16 open-end wrench to disconnect the

of

the instrument

(RF

module) from MP13 (main deck), remove the four screws that hold the

Procedure

8.

In Option

020

and 021 models, the RF module is in

Use the correct torque wrench when installing connectors.

Do

not exceed the following torque settings

1.5

N'm

for

2.0

N.m

for the 4 mm

the 3 mm

(T

IO)

(TIS)

screws, screws.

for

this instrument:

sub

-miniature

29

Microwave Converter Model 11793A

1.

Place the RF Module upside down with the semi-rigid coax cables pointing to the left. Position the main deck over the module with the four holes in the deck aligning with the four screw holes in the module base. (The A1 assembly mounting stand-offs on MP13 (main deck) should be

MP

upside down and on the opposite side of

2.

Take the main deck assembly (coax cables facing to the left) and slide into the main chassis through the front frame (the two notches indicate the bottom edge and should be down). When the coax cables are within two inches of the front frame edge, carefully connect the semi-rigid coax cables to their respective front-panel connectors, using

For Option 020 and 021 instruments, main deck reassembly is just the opposite of disassembly.

13 from the assembler.) Attach with four screws.

a

S/16

inch open-end wrench.

Be careful that or interference

3.

Carefully slide the main deck assembly into the instrument chassis until the front panel is within the front frame and the mounting holes are aligned. Attach the front panel with the Torxhead screws: 3 top, 3 bottom.

4.

Attach the main deck assembly to the side struts using the

Turn the instrument over. With the three A1 assembly mounting stand-offs on the main deck

5.

(MP13) adjacent to the assembler, mount the A1 assembly to the main deck assembly. The three large holes in the A1 assembly must align with the three mounting stand-offs, and the heat sink holes must align with the deck mounting holes. Firmly seat the A1 assembly on the mounting stand-offs and lock the stand-offs by turning the screw heads a

6.

Fasten the transistor heat sink to the deck with two screws.

7.

Connect W12 to AlJ1.

Mount transformer to the mounting bracket using the four long transformer screws. Mount the

8.

bracket to the left side strut at the third and eighth holes (counting forward from the rear frame) with four screws. Make sure that the transformer secondary wires (4,

of

the A1 Switch Control Assembly.

you

of

do

the

not

bend the coax cables. Possible attenuation

RF

signal may result.

six

screws: three screws to a side.

1/4

turn clockwise.

5,

6)

face the corner

six

30

Replace rear frame assembly to the side struts by connecting with four screws at the frame

9.

corners. On instruments with serial number prefix 2407A, mount the rear panel to the rear frame using eight screws. Ensure that the panel is aligned the same corner as the transformer.

10.

Connect the black/green primary wire VOLTAGE lug (underneath the white/brown/gray wire

(0)

to the upper right LINE VOLTAGE lug.

Solder the colored secondary wires from the transformer to their respective solder pads on the

11.

A1 Assembly: yellow to 4, green to

Reconnect

12. inch lock washer and nut.

J8

(on

W

1

Sj

to the rear panel (in the

5:

(05)

and blue to

on the transformer to the bottom right LINE

6.

Solder the black wire to the GND pad.

FREQ

so

that the electrical hardware is in

(9

1

81).

Connect the black primary wire

OFFSET INPUT opening) using the

9/

16

Model 11793A Microwave Converter

Replace the side panels by centering each panel in the track formed by the side strut edges. Slide

13. the panel from the rear forward until the captive screw on the rear edge of the panel

is

contact with the rear frame. The screw should be in position to be tightened into the frame. The panel will move forward into place as the screw is tightened.

14. Replace the top cover by placing the cover onto the upper frame of instrument, then slide cover toward front of instrument. Tighten screw in middle of rear edge of cover while applying a slight upward pressure on the leading edge (to keep the edge from jamming on front frame). Guide cover into slot in the top of the front frame. Turn instrument over and repeat for the bottom cover.

39.

RF

Module Disassembly Procedure for Std, Option

010, & 020

Instruments

NOTE

in

When referring to switch ports: port connector, port the switch (label

1.

Disconnect

2.

Remove module cover (MP

3.

Disconnect cables

W

I

2

(gray ribbon cable) at

W7

Filter, W8 from U2 IF Amp and

4.

Unsolder orange wire from

5.

Remove

U2

and FL1 from MP16 by removing the two screws securing

#2

up)

and

is

the second

with the

16)

by removing the ten cover screws.

W8

using a

S2

Switch, port #4.

SMA

connectors facing

A

1

J1.

5/16

U2.

#I

is

the

far

left

(SMA)

connector, etc., when holding

you.

open-end wrench:

W7

from U3 Mixer and FL1

U2,

then loosening the

filter clamp screw, and sliding the assembly out.

6.

Disconnect the instruments, or W17 in Option

LO

input semi-rigid coax cable

020

instruments) at U3, being careful not to bend, crimp, or kink

(W

1

in Standard instruments, W 19

in Option

the cable. The radio frequency interference (RFI) shielding grommet can be removed by slipping the grommet off of the cable via the cable access slit.

7.

Repeat step

8.

6

for

W2

(RF/IF Output) at

6

for W3 (RF Input) at

S2

port #2.

S2

port #3.

0

10

Unscrew the two Torxhead screws that secure the MP18 mixer mounting bracket to the MP14

9.

module base.

NOTE

Remember the order in which the stiffener bar and mixer bracket are

bar

and

assembled. The stiffener

mixer bracket assembly order is

different between each brand of mixer used.

10. Disconnect

11. Disconnect

U3

Mixer from

AT1

from S2.

AT1

Attenuator.

U3

Mixer and bracket can then be disassembled.

31

Microwave Converter Model 11793A

12.

Remove

S2

from MP14 module base by removing the two corner screws.

40.

13.

Unsolder the three control wires

Remove the Spira Shield (RF "EMI" gasket situated in the module base lip) only if damaged, or

14. replacement

RF

Module Disassembly Procedure

of

MP14 module base.

for

(1,

2,

Option

5)

from S2.

001,

011,

&

021

Instruments

NOTE

When referring to switch ports: port connector, port the switch (label

1.

Disconnect W 1 2 (gray ribbon cable) at A 1 J 1.

2.

Remove MP16 module cover by removing the 10 cover screws.

3.

Disconnect cables W7 and W8 using Filter, W8 from

4.

Unsolder the orange and white/orange wires (3, 93) from U2. Unsolder the gray and white/orange wires

Remove U2 and FL1 from MP16 by removing the two screws securing U2, then loosen the filter

5. clamp screw and slide the assembly

U2

#2

is the second

up)

with the SMA connectors facing

IF Amp and S2 Switch, port #4.

(8,

9

3)

from U 1.

a

SMA

5/16

out.

#I

is the far left (SMA)

connector, etc., when holding

you.

open-end wrench: W7 from

U3

mixer and FL1

6.

Disconnect W9 from S1, port #1 and U1.

7.

Disconnect the in Option 021) from S1, port #2, being careful not to bend, crimp, or kink the cable. The radio frequency interference the cable via the cable access slit.

8.

Disconnect W6 from S1, port #3 and

Disconnect W5 from Sl, port #4 and U1 (power terminal side).

9.

Unscrew the two Torxhead screws that secure the UlMP17 Amplifier mounting bracket to

10.

MP

14 module base. The

Unscrew the two Torxhead screws that secure the MP18 mixer mounting bracket to MP14

11. module base.

LO

input semi-rigid coax cable (W4 in Option

(RFI)

shielding grommet can be removed by slipping the grommet off of

U3.

U

1

amplifier and bracket can then be removed.

001;

W14 in Option 01

NOTE

Remember the order in which the stiffener bar and mixer bracket are assembled. The stiffener bar and mixer bracket assembly different between each brand

of

mixer used.

order

is

1;

or

W18

32

12.

Disconnect

U3

from the Attenuator (AT

1).

U3 Mixer and bracket can then be disassembled.

Model 11793A Microwave Converter

13. Disconnect

14.

Disconnect

15.

Disconnect AT1 from

16.

Remove switches S1 and each switch.

17.

Unsolder the control wires on each switch

18. Remove the Spira Shield necessary for

41.

RF

Module

1.

Spira Shield (RF gasket) replacement:

Spira Shield intervals, are a series of rectangular protrusions called bosses. Insertion and seaming should begin and finish at

a.

Use finger protection (such as a rubber finger protector) when working with the Spira Shield.

W2

from

W3

from

MP

Assembly

is

inserted into a groove

a

boss.

14

Procedure

S2,

port #3, being careful not to bend, crimp, or kink the cable.

S2,

port

#2,

being careful not to bend, Lrimp, or kink the cable.

S2,

port

#l.

S2

from MP14 module base by removing the two screws that secure

(6,

(RF

gasket situated in the module base lip) only

module base replacement.

for

Std, Option

010,

in

the module base

4, & 92

&

on

SI;

020

Instruments

5,

1, & 2

on

S2).

(MP

14). Within the groove at spaced

if

damaged, or

b.

Start at a boss on a straight section of the groove. Push the shielding into the groove using a protected finger. Guide and twist the shielding to the next boss with the other hand.

c. At the next boss twist the shielding into a tight curl, guide it through the groove, then allow

the shielding to expand to hold itself in place.

When an opening in the outer wall

d.

diagonally. Begin the threading procedure on the other side of the opening.

e. Twist the shielding tighter when rounding corners.

2.

Solder the three control wires to the C(+).

3.

With the cable slots of the module facing towards the assembler, mount

ports pointing to the center of the module) in the left hand side

4.

Connect AT 1 to port

5.

Connect output) faces opposite to the bracket mounting holes.

6.

Connect U3 to AT1, but do not tighten.

U3

to the mixer bracket, ensuring that the mixer side port (which connects to the

#

1

of

S2.

of

the module

S2

terminals

is

encountered, the shielding should be cut

as

follows: green to

of

1,

brown to

S2

(label up and the

the module base.

2,

and red to

IF

NOTE

Mixer construction varies with manufacturer, and thus, is assembled within

the

RF

Module differently.

For

example, a Norsal mixer has a

sfiffener bar placed between the mixer mounting bracket and the base

RHG

mounting castings. An

mixer has a stiffener bar placed above

the mixer mounting bracket.

33

Microwave Converter

7.

Attach the mixer assembly to the module base, but do not tighten the screws.

8.

Tighten the connection to AT 1, then tighten the Mixer assembly screws.

Model 1 1 79 3A

9.

Connect W instruments) to the right port of the mixer (cable slots in module should be facing assembler). Ensure that the radio frequency interference (RFI) shielding grommet cradles the cable in the slot with the cable access slit facing to the side.

10.

Connect W2 to S2, port #3. Ensure that the RFI Grommet

11.

12.

13.

14.

15.

16.

17.

18.

Repeat step 10 for W3 to S2, port #2.

Attach U2

Solder the orange wire to the U2 amplifier terminal.

Place filter clamp around FL1 and attach loosely to the cover.

Connect FL

Connect W7 to U3 and FL1.

Connect W8 to U2 and S2, port #4.

Secure module cover to base. Snug the screws down finger tight, then tighten the screws, working from the center out.

1

(in Standard instruments), W

to

the module cover.

1

to

U2.

Tighten FL 1 clamp.

19

(in Option 01 0 instruments), or W 17 (in Option 020

is

in place as above in step 9.

42.

Connect W12 to AlJ1.

19.

RF

Module Assembly Procedure for Option

1.

For Spira Shield (RF gasket) replacement, refer to step 1 under Paragraph 41 above.

2.

Wrap and solder the control wires to the S1 and S2 terminals as follows: blue to yellow to S 1 terminal green to S2 terminal

3.

With the cable slots of the ports pointing to the center of the module) in the right side of the module base; mount S2 in the left side of the module base. Secure the switches with the four long Torxhead screws.

4.

Connect AT1 to S2, port

Connect

5.

output) faces opposite to the bracket mounting holes.

Connect U3 to

6.

U3

to the mixer bracket, ensuring that the mixer side port (which connects

ATI,

2,

white/red to

1,

brown to S2 terminal 2, orange, white/red to S2 terminal C(+).

MP

14 RF module facing towards the assembler, mount

#I.

but do not tighten.

001,

011,

S

1

terminal C(+);

&

021

Instruments

S

SI

1

terminal

(label up and

to

1,

the IF

34

Model

11793A

Microwave Converter

NOTE

Mixer construction varies with manufacturer, and thus,

RF

within the stiffener bar placed between the mixer mounting bracket and the base mounting castings. An the mixer mounting bracket.

Attach the mixer assembly to the module base, but do not tighten the screws.

Tighten the connection to

Assemble terminal labels are up, and that the terminals face towards switch

10.

Attach and secure

11.

Connect

radio frequency interference

access slit facing to the side.

12.

Connect

13.

Connect

14.

Connect

U1

HF LO

W3

to

S2,

W2

to

S2,

W

5

to the left port of

W6

to the right port of

Module differently. For example, a Norsa2 mixer has a

RHG

mixer has a stiffener bar placed above

AT1,

then tighten the mixer assembly screws.

Amplifier and the

U

1

Amplifier assembly to

port

#2

(cable slots in module should be facing assembler). Insure that the

(RFI)

port

#3.

Ensure that the

U1

Amplifier and to S1, port

U3

UlMP17

MP 1 4

shielding grommet cradles the cable in the slot with the cable

RFI

mixer and to

Mounting Bracket. Ensure that the

module base.

Grommet

S1,

port

is

in place as described in step 11.

#4.

#3.

is

assembled

S2.

U1

power

15.

Connect the instruments; or place as described in steps

16.

Connect

Attach

17.

18.

Solder both the orange and white/orange wires

19.

Place filter clamp around

2

0.

Connect

21.

Connect

22.

Secure module cover to base. Snug the screws down finger tight, then tighten the screws,

23.

working from the center out.

Connect

2

4.

LO

input semi-rigid coax cable

W18

W9

to the right port of

U2

to

MPl6

FL

1

to

U2.

W7

to

U3

W

8

to

U2

W12

to AlJ1.

(W4

in Option 021 instruments) to

11.

U1

and to S1, port #l.

module cover.

FL1

and attach loosely to the cover.

Tighten

and

FL FL1. S2,

port

I

clamp.

#4.

in Option

S1,

(3,

93)

port

to the

001

instruments;

#2.

Insure that the

U2

amplifier terminal.

W

14

RF

in Option

grommet

01

is

1

in

35

El

INPUT

MICROWAVE SIGNAL DOWN-CONVERSION

L

CONTROL ASSEMBLY

I

r--

I

--

--1

'I

I

1

POWER

TRANSFCRHER

I I

I

t26V

FULL WAVE RECTIFIER

0

I

"_.

-

t12v

REGULATOR

--

-

t5v

REGULATOR

--

t5v

I

UNREGULATED

I

t12v

Figure

10.

Simplified

BD

MICROWAVE CONVERTER

Block

Diagram

1

37/30

A1

SWITCH

CONTROL

1

NOTES

1.

ALL CIRCUITRY EXCEPT

IS

ENCASE0 IN A R.F.I.

SHIELDED MOOULE.

2.

J9

AN0

JlO

Hi0

BE OROEREO SEPARATELY.

3.

ARE

RESPECTIVELY. AN0 CANNOT

PART

J9

10

>-

7

>i

W12

OF Y12 AN0

(NOTE

!!!?'_?

,

11

JiO

'(7t

'(

w10

5

9t

010

L_--d

(OPTION 020

i26V

TO

SWITCHES

SIGNAL OIRECT PATH

SIGNAL OOHN CONVERT PATH

t12V TO AMPLIFIERS

NC

J?

ONLY1

I

[NOTE

31

INPUT SIQNAL DOWN CONVERTER

I.+

I

Ill

S2

RF INPUT SWITCH

AT1 368

ATTENUATOR

U3 MIXER AMPLIFIER

EO0

MHz U2 IF 15dE

(NOTE

(STD

I

31

I

AND OPTION

010

ONLYl

4.

SEE FIGURE 7 FOR HELP IN COMPONENT LOCATION AND IOENTIFICATION.

[LEFT SIOEI

ISTO

ONLYl

(RIGHT

SIDE1

IOPTION

010

ONLY1

.---..

L___>

lOPfION

020

ONLY1

J?

JB

I

(NOTE

3)

Figure

11.

(Schematic Diagram

ss

1

INPUT SIQNAL DOWN CONVERTER

for

Standard

Option

010,

and Option

0201

39/40

(NOTE

11

INPUT

SIGNAL

DOWN

CONVERTER

NOTES

1.

ALL CIRCUITRY EXCEPT

IS

ENCASE0 IN A R.F.I.

SHIELOING MODULE.

2

-9

bhO

,110

111

2ESPFC'IVt.l. Ah0 CbhhOT

OROEREO

BE

3.

INPUT VOLTAGE TO CANNOT EXCEED t12

VdC

ARt

SFPARA1i.l

SUPPLY.

PAHT

LO

t51

5>1

W12

CF

"12

b1D

AMPLIFIER

(0.6V)

OF

t26 VOC

I

1-

SIGNAL DIRECT PATH

SIGNAL DOWN CONVERT PATH

LO

LO AMPLIFIER IN PATH

GND

AMP

TO

OUT

SUITCHES

PATH

I

8

S2

RF INPUT SWITCH

0

1 CI

-

I

AT1

ATTENUATOR

340

K2

BOO

FLl

PASS

T

HHz

LOU

-

FILTER

=z

e-----

I

IF

15d0

'L I FI

I

ER

c23

(I

T

'I

[NOTE

(OPTIONS

AND

4)

I I

011

001

ONLYI

D

IPTIONAL LO AMPLIFIER AND SWITCH

LO AMP OPT

5.

SEE FIGURE LOCATION AND IDENTIFICATION

001

0

FOR

011 021

HELP IN COMPONENT

ONLY)

(OPTION

ONLYI

021

I

I I

L---

CR1

I

AMPLIFIER

18-26

6H2 (NOTE

31

f-

ss2

Figure

12.

INPUT SIGNAL DOWN CONVERTER

(Schemetlc

Diagram

001,

for

Ol1,and

Options

021)

41

NOTES

01

TOP BOTTOM

VIEW VIEW

C

A T

H

0

E

IANOOEI

VR3 VR3 TOP BOTTOM

VIEY VIEW

01

A1

SWITCH

I--

CONTROL

ASSEMBLY

--

(11793-60001)

--

-- --

--

1

TO

RF

swci iES

2,3

(j

3

(CASE1

TOP

VR4

VIEW

Figure

14.

AI

SWITCH

ss3

~~~

CONTROL

Schematic

ASSEMBLY,

Diagram

43/44

REGIONAL SALES AND

SERVICE OFFICES

NORTH/CENTRAL AFRICA

Hewlett-Packard S.A. 7, Rue du Bois-du-Lan CH-1217 Tel: (022) 83 12 12 Telex: 27835 hpse

Cable: HEWPACKSA Geneve

MEYRIN

2, Switzerland

ASIA

Hewlett-Packard Asia Ltd.

6th Floor, Sun Hung Kai Centre

30 Harbour Rd.

G.P.O. Box 795

HONG KONG

Tel: 5-832 3211

After

Jan.

1,

1984

47th Floor, China Resources Bldg.

26 Harbour Rd., Wanchai

HONG KONG

Telex: 66678 HEWPA HX

Cable: HEWPACK HONG KONG

CANADA

Hewlett-Packard (Canada) Ltd.

6877 Goreway Drive

MISSISSAUGA,

Tel: (416) 678-9430 Telex: 61 0-492-4246

Ontario L4V 1 M8

MEDITERRANEAN AND MIDDLE EAST

Hewlett-Packard S.A.

Mediterranean and Middle East Operations

Atrina Centre

32 Kifissias Ave. Paradissos-Amarousion, Greece Tel: 682 88 11 Telex: 21-6588 HPAT GR

Cable: HEWPACKSA Athens

ATHENS

EASTERN EUROPE

Hewlett-Packard Ges.m.b.h. Lieblgasse 1 P.O. Box 72 A-1222 Tel: (222) 2365110 Telex:

VIENNA,

1

3 4425 HEPA A

Austria

NORTHERN EUROPE

Hewlett-Packard S.A.

Uilenstede 475

P.O. Box 999 N L-1180 AZ

The Netherlands

Tel: 20 437771

AMSTELVEEN

SOUTH EAST EUROPE

Hewlett-Packard S.A.

7,

Rue du Bois-du-Lan CH-1217 Tel: (022) 83 12 12 Telex: 27835 hpse

Cable HEWPACKSA Geneve

MEYRIN

2, Switzerland

OTHER EUROPE

Hewlett-Packard S.A. P.O. Box 150, Rte du Nant-D’Avril

CH-1217 Tel: (022) 83 8111 Telex: 22486 hpsa

Cable: HEWPACKSA Geneve

MEYRIN

2, Switzerland

EASTERN USA

Hewlett-Packard Co.

4 Choke Cherry Road

ROCKVILLE,

Tel: (301) 258-2000

MD 20850

MIDWESTERN USA

Hewlett-Packard Co. 5201 Tollview Drive

ROLLING

Tel: (312) 255-9800

MEADOWS,

IL 60008

SOUTHERN USA

Hewlett-Packard Co. 2000 South Park Place P.O. Box 105005

ATLANTA,

Tel: (404) 955-1500

GA 30348

WESTERN USA

Hewlett-Packard Co. 3939 Lankershim Blvd.

P.O.

Box 3919

LOS ANGELES,

Tel: (213) 506-3700

CA 91604

OTHER INTERNATIONAL AREAS

Hewlett-Packard Co. Intercontinental Headquarters 3495 Deer Creek Road

PAL0 ALTO,

Tel: (415) 857-1501 Telex: 034-8300 Cable: HEWPACK

CA 94304

HP (Hewlett-Packard) 11793A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual