Agilent N5532A Users Guide

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Page 1

N5532A Sensor Module

User’s and Service Guide

for the Agilent N5531S and N5530S Measuring Receiver Systems

Manufacturing Part Number: N5532-90005

Supercedes Part Number N5532-90004

Printed in USA

November 2006

Page 2

Notice

The information contained in this document is subject to change without notice.

Agilent Technologies makes no warranty of any kind with regard to this material, including but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Agilent Technologies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

The following safety symbols are used throughout this manual. Familiarize yourself with the symbols and their meaning before operating this equipment.

WARNING Warn ing denotes a hazard. It calls attention to a procedure

which, if not correctly performed or adhered to, could result in injury or loss of life. Do not proceed beyond a warning note until the indicated conditions are fully understood and met.

CAUTION Caution denotes a hazard. It calls attention to a procedure that, if not

correctly performed or adhered to, could result in damage to or destruction of the instrument. Do not proceed beyond a caution sign until the indicated conditions are fully understood and met.

NOTE Note calls out special information for the user’s attention. It provides

operational information or additional instructions of which the user should be aware.

Warranty

This Agilent Technologies instrument product is warranted against defects in material and workmanship for a period of one year from date of shipment. During the warranty period, Agilent Technologies will, at its option, either repair or replace products that prove to be defective.

For warranty service or repair, this product must be returned to a service facility designated by Agilent Technologies. Buyer shall prepay shipping charges to Agilent Technologies and Agilent Technologies shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products returned to Agilent Technologies from another country.

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Contents

1. General Information

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

N5532A Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Instruments Covered by Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2. Installation

Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Operating Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Installing the Calibration Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Installing the Cal Factors in the N5530S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Installing the Cal Factors in the N5531S, N5530SE26, and N5530SE50 . . . . . . . . . . . . . . 13

3. Specifications

N5532A Sensor Module Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

N5532A Sensor Module Supplemental Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4. Maintenance and Repair

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Power sensor replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Disassembly Hints for Options 504, 518, and 526 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Re-assembly Hints for Options 504, 518, and 526 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Disassembly Hints for Option 550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Re-assembly Hints for Option 550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Cal Factor Data File Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Contacting Agilent Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

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Contents

Table of Contents

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General Information

1 General Information

This user guide contains information about installation, operation, product specifications, calibration data, maintenance and repair, and storage conditions of the N5532A Sensor Module.

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General Information

Description

The N5532A is intended to be used with the N5531S or N5530S Measuring Receiver System. It is essentially a power sensor with a power splitter at the input. See Figure 1-1 on page 7. In use, the sensor module's two output cables are connected to a power meter (E4418/19, E4416/17, or N1911/12 Series) and the Performance Spectrum Analyzer (PSA) RF Input. When using an N1911 or N1912 Series power meter, it is necessary to use an adapter (N5532A Option 019) to connect the output cable of the sensor module to the power meter. The sensor module is calibrated such that the power meter indicates the power supplied by the source under test.

The N5532A Sensor Module is offered in four frequency configurations:

• Option 504 covers 100 kHz to 4.2 GHz

• Option 518 covers 10 MHz to 18 GHz

General Information

• Option 526 covers 30 MHz to 26.5 GHz

• Option 550 covers 30 MHz to 50 GHz (with adaptor 11903D 2.4mm(f) to Type N(m))

The sensor module accurately measures power levels from -20 dBm to +30 dBm (10 µW to 1 W). Calibration Factor (Cal Factor) information is unique to each sensor module and is supplied on a floppy disc included with each N5532A. Please refer to “Installing the Calibration Factors”

on page 2-12 for more information on using the Cal Factor Data.

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General Information

Description

NOTE The N5532A Sensor Module is compatible ONLY with the newer

E4418/19, E4416/17, or N1911/12 Series power meters. They are NOT compatible with the earlier 430 Series or 70100 power meters. If used with an N1911/12 Series power meter, an adapter (N5532A Option 019) is required to connect the dc cable to the power meter.

N5532A Block Diagram

Figure 1-1 N5532A Sensor Module

General Information

Chapter 1 7

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General Information

Instruments Covered by Manual

These instruments have a two-part serial number: the prefix (two letters and the first four numbers), and the suffix (the last four numbers). The two letters identify the country in which the unit was manufactured. The four numbers of the prefix are a code identifying the date of the last major design change incorporated in your Agilent Technologies product. The four-digit suffix is a sequential number and coupled with the prefix, provides a unique identification for each unit produced. The contents of this manual apply directly to all serial numbers unless otherwise indicated.

8 Chapter 1

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2 Installation

Installation

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Installation

Initial Inspection

Inspect the shipping container for damage. If the shipping container or packaging material is damaged, it should be kept until the contents of the shipment have been checked mechanically and electrically. If there is mechanical damage notify the nearest Agilent Technologies office as shown in Table 4-3 on page 37. Keep the damaged shipping materials (if any) for inspection by the carrier and an Agilent Technologies representative.

Operating Precautions

NOTE For optimal results, the sensor module must be placed on a supportive

surface with the serial number label facing up. This orientation provides repeatable measurements by eliminating strain on the input connector.

Installation

The input connector should be torqued to 12 in-lb (135 Ncm) for the type-N connector, 8 in-lb (90 Ncm) for the APC 3.5 mm connector, or 8 in-lb (90 Ncm) for the 2.4 mm connector to ensure a repeatable connection in order to meet the published specifications.

Connect the sensor module by turning only the hex nut portion of the connector. Damage can occur if torque is applied to the sensor module body.

The connector plastic insulator bead deteriorates when contacted by acetone, trichloroethylene, carbon tetrachloride, benzene, etc.

WARNING BEFORE CONNECTING THE SENSOR MODULE TO OTHER

INSTRUMENTS, ensure that all instruments are connected to the protective (earth) ground. Any interruption of the protective earth grounding will cause a potential shock hazard that could result in personal injury and cause damage to the sensor module.

10 Chapter 2

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Installation

Initial Inspection

CAUTION To prevent physical damage to the sensor module or device-under-test

(DUT), pay careful attention to the mechanical setup. The mechanical design of the sensor module minimizes SWR. However, the weight and length of the module, combined with the stiffness of the interconnect cables, enables the exertion of considerable leverage at the module’s input connector. To prevent physical damage to the sensor module, the DUT, and the mating connectors, and to assure best electrical performance, observe the following precautions:

1. Do not permit the interconnect cables of the sensor module to extend out where anyone passing by could accidentally push and exert leverage on the cables. This consideration is especially important when the DUT is a light-weight instrument that sits freely on a table.

2. When possible, lay the sensor module on a supportive surface with the serial number label facing up. This consideration is especially important when rigid RF adapters are used to directly interconnect the sensor module to the DUT. RF adapters lengthen the leverage arm of the sensor module and are often fragile. When level-accuracy requirements permit, use flexible cables to interconnect the sensor module to the DUT.

3. Do not bend or coil the interconnect cables (more than necessary) to a diameter circumscribing less than 150 mm (6 in.). This precaution often applies when the instruments are rack-mounted and interconnected to rear-panel connectors. Repeated flexing of coiled, interconnect cables can degrade SWR and increase RFI of the RF output cable.

4. Do not attempt to tighten the type-N connector by twisting the body of the sensor module.

Installation

Chapter 2 11

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Installation

Installing the Calibration Factors

Cal factors can be entered and stored in an internal table (Automatic Cal Factors) in the PSA’s non-volatile memory. The table is automatically accessed during RF power measurements (after the measuring receiver has tuned to the frequency) to correct for the non-linear response of the power sensor. If no entry in the table directly corresponds to the frequency being measured, the measuring receiver derives a cal factor through linear interpolation using the nearest calibration points in the table.

Installing the Cal Factors in the N5530S

There are two methods of installing the sensor module calibration factors (cal factors) in the N5530S Measuring Receiver System.

The first method loads and saves the cal factors using the PC. The second method uses the PSA to load the data.

Installation

Figure 2-1 Utilities Menu

Both methods are accessed through the Utilities drop-down menu (See

Figure 2-1, “Utilities Menu.”.)

Using the PC to Load and Save the Cal Factors

1. Insert the N5532A Sensor Module Data Disk in the PC A:\ drive.

NOTE If your PC does not have a floppy disc drive, use the PSA to save your

cal data to your PC. Then use this procedure to load the sensor cal factors into the system.

2. Select Calibration Factors to bring up the Calibration View Edit dialog box.

3. Press Load Cal File in the Calibration View Edit dialog box. The Open Calibration File dialog box appears.

4. Navigate to the PC A:\ drive if necessary and select the CFData.XML file.

12 Chapter 2

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Installation

Installing the Calibration Factors

NOTE If you obtained the cal data from the PSA, go to the directory you

specified in Step 2 of the next section to load the data.

5. Press Open.

6. Press OK to apply the Cal Factors to the system.

Using the PSA to Save the Cal Factors to the PC

1. Insert the N5532A Sensor Module Data Disk into the PSA A:\ drive.

2. Select Copy Files from SA under the Utilities menu option of the N5531S or N5530S User Interface. Browse to the location you wish to place the SA floppy disc files.

3. Click OK to copy the calibration factor files to the specified location. Three files appear: CALTABLE.XSL (enables viewing with web browser), CFDATA.XML (actual Cal Factor Data), and CFCERT.DOC

(Cal Factor Certification)

4. To load this data into the system, follow steps 2 through 6 in the section entitled, “Using the PC to Load and Save the Cal Factors” on

page 2-12.

Installing the Cal Factors in the N5531S, N5530SE26, and N5530SE50

1. Insert the floppy disk in to PSA floppy disk drive. Make sure the disk is for the sensor module you are using.

2. Press

Calibration Factor as the file type. Press Dir Up, Up Arrow, Dir Select to

ensure the “A” drive is selected. Then press factor file (CFDATA.XML) to the PSA spectrum analyzer.

MODE, Measuring Receiver, File, Load, Type, and select

Load Now to load the cal

Installation

1. . Provides traceability to National Institute of Standards and Technology or NIST

Chapter 2 13

Page 14

Installation

Installing the Calibration Factors

Installation

14 Chapter 2

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3 Specifications

The specifications listed in Table 3-1, “Specifications,” are the performance standards or limits against which the sensor module may be tested. These specifications are valid ONLY after proper calibration of the power meter.

Specifications

Page 16

Specifications

N5532A Sensor Module Specifications

Table 3-1 Specifications

Description Specification Comments

Frequency Range

Option 504 Option 518 Option 526 Option 550

Power Range +30 dBm (1 watt) to

100kHzto4.2GHz 10 MHz to 18 GHz 30 MHz to 26.5 GHz 30 MHz to 50 GHz

−20 dBm (10 µW)

Maximum Safe Power

Sensor Module Linearity

Opt. 504

+30 to +20 dBm < +20 dBm

Sensor Module Linearity

Opt. 518

+30 to +20 dBm < +20 dBm

Sensor Module Linearity

Opt. 526

+30 to +20 dBm < +20 dBm

Sensor Module Linearity

Opt. 550

+30 to +20 dBm < +20 dBm

+30 dBm

±3% negligible

Averag e Total Power

Input SWR

Opt. 504

100kHz to 2GHz 2GHz to 4.2GHz

Specifications

16 Chapter 3

< 1.10:1 < 1.28:1

Page 17

Table 3-1 Specifications

Description Specification Comments

Input SWRa

Opt. 518

Specifications

N5532A Sensor Module Specifications

10 MHz to 2 GHz 2 GHz to 18 GHz

Input SWR

< 1.10:1 < 1.28:1

Opt. 526

30 MHz to 2 GHz 2 GHz to 18 GHz 18 GHz to 26.5 GHz

Input SWR

< 1.10:1 < 1.28:1 < 1.40:1

Opt. 550

30 MHz to 2 GHz 2 GHz to 18 GHz 18 GHz to 26.5 GHz

26.5 GHz to 33 GHz 33 GHz to 40 GHz 40 GHz to 50 GHz

< 1.10:1 < 1.28:1 < 1.40:1 < 1.55:1 < 1.70:1 < 1.75:1

a. When connected to PSA with at least 30 dB attenua-

tion

Chapter 3 17

Specifications

Page 18

Specifications

N5532A Sensor Module Supplemental Information

Table 3-2 Supplemental Information

Description Supplemental

Information

Input Impedance 50 ohms

Input Connector

Option 504 Option 518 Option 526 Option 550

RF Output Insertion Loss

Opt. 504

RF Output Insertion Loss

Opt. 518

RF Output Insertion Loss

Opt. 526

RF Output Insertion Loss

Opt. 550

Type-N (male) Type-N (male) APC 3.5 mm (male)

2.4 mm (male)

7 dB @ 3 Hz to 8 dB @ 4.2 GHz Typical

7 dB @ 3 Hz to 11 dB @ 18 GHz Typical

7 dB @ 3 Hz to 13 dB @ 26.5 GHz Typical

7 dB @ 3 Hz to 16 dB @ 50 GHz Typical

Comments

Recommended Torque

12 in-lbs (135 Ncm) 12 in-lbs (135 Ncm) 8 in-lbs (90 Ncm) 8 in-lbs (90 Ncm)

Military Specification Type tested to an

equivalent of MIL-PRF-28800F class 3 environmental specifications

Altitude

Operating

Storage

Temp. Rang e

Operating Storage

Calibration Cycle 1 year

Specifications

Weight 0.72 kgm (1.5 lb)

Shipping Weight 1.28 kgm (2.8 lb)

18 Chapter 3

< 4600 meters (15,000 feet) <7600 meters (25,000 feet)

0 to +55 °C

− 40 to 70 °C

Page 19

Table 3-2 Supplemental Information

Specifications

N5532A Sensor Module Supplemental Information

Description Supplemental

Information

Dimensions

Height 51.2 mm (2 in)

Width 62.4 mm (2.5 in)

Length

210 mm (8.3 in)

1905 mm (75 in)

a. From input connector to end of plastic casing. b. From input connector to end of cable.

Table 3-3 Maximum Cal Factor Uncertainty

Maximum Cal Factor Uncertainty

Frequency Range

100 kHz to ≤ 30 MHz ± 1%

30 MHz to ≤ 2 GHz ± 1% ± 1.5 ± 1.5 ± 1.5

Opt 504 Opt 518 Opt 526 Opt 550

Comments

2 GHz to ≤ 4.2 GHz ± 1% ± 2.0% ± 2.0% ± 2.0%

2 GHz to ≤ 10 GHz ± 2.0% ± 2.0% ± 2.0%

10 GHz to ≤ 18 GHz ± 2.5% ± 2.0% ± 2.0%

18 GHz to ≤ 26.5 GHz ± 2.5% ± 2.5%

26.5 GHz to ≤ 50 GHz ± 4.2%

Specifications

Chapter 3 19

Page 20

Specifications

N5532A Sensor Module Supplemental Information

Specifications

20 Chapter 3

Page 21

Maintenance and Repair

4 Maintenance and Repair

Page 22

Maintenance and Repair

Maintenance

Cleaning Solutions

Maintenance and Repair

A solution of pure isopropyl or ethyl alcohol can be used to clean the connector (keeping in mind its flammable nature).

Connector Cleaning

Clean the connector face using a cotton swab dipped in isopropyl alcohol. If the swab is too big, use a round wooden toothpick wrapped in

a lint free cotton cloth dipped in isopropyl alcohol.

22 Chapter 4

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Repair

Power sensor replacement

If the power sensor requires replacement, 2 screws must be removed from the RF input connector flange of the replacement assembly. Prepare the replacement power sensor by removing the 2 screws using a 1.5-mm hex driver. Refer to Figure 4-1 for location of screws. Note that the screws you need to remove are on the opposite end and opposite side of the notch in the power sensor cable connector.

Figure 4-1 Location of Screws to be Removed

Maintenance and Repair

Repair

Maintenance and Repair

Chapter 4 23

Page 24

Maintenance and Repair

Repair

Disassembly Hints for Options 504, 518, and 526

Figure 4-2 Options 504, 518, and 526; Top View

Maintenance and Repair

Figure 4-3 Options 504, 518, and 526; Bottom View

Hints for disassembling Option 504, 518, or 526. Refer to Figure

4-2 and Figure 4-3:

NOTE Option 526 will appear slightly different than shown in Figure 4-2 and

Figure 4-3, due to the different connectors (APC 3.5 mm instead of

Type N ).

• The bulkhead connector (A) must be removed before the power sensor to 3 dB attenuator cable (B, H) can be removed.

• To remove the power sensor to 3 dB attenuator cable (B, H), hold

24 Chapter 4

Page 25

Maintenance and Repair

Repair

connector (C) with 3/4-inch open-end wrench while loosening nut (D) and power sensor connector (E).

• To remove power splitter (J), loosen connectors but do not remove the 2 cables or the 3 dB attenuator until the hardware that fastens the power splitter to the main deck (F) has been removed. This will

keep from damaging the center conductors.

Re-assembly Hints for Options 504, 518, and 526

Hints for assembling Option 504, 518, or 526 after repair. Refer to

Figure 4-2 and Figure 4-3.

• Place the power sensor to 3 dB attenuator cable (B, H) through the rectangular hole in the main deck (F) before installing the bulkhead connector (A). Place lock washer and nut on bulkhead connector and torque to 25 inch-pounds.

• When fastening the power sensor (G) to the main deck (F), torque the 2 screws holding it to 3 inch-pounds.

Maintenance and Repair

• Connect the power sensor connector (E) to the cable (B) and torque to 8 inch-pounds while holding connector (C) with a 3/4-inch open-end wrench. Then, while still holding connector (C), tighten the nut (D) against the power sensor connector (E).

• When installing the power splitter (J), connect the 3 dB attenuator (I) and the 2 cables before fastening the power splitter to the main deck (F).

• All coax connectors should be torqued to 8 inch-pounds.

Disassembly Hints for Option 550

Figure 4-4 Option 550; Top View

Chapter 4 25

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Maintenance and Repair

Repair

Figure 4-5 Option 550; Bottom View

Maintenance and Repair

Hints for disassembling Option 550. Refer to Figure 4-4 and Figure

4-5.

• When removing the power sensor to 3 dB attenuator cable (B), hold connector (C) with a 1/4-inch open-end wrench while loosening the power sensor connector (D) using a 5/16-inch open-end wrench.

• When removing the power splitter (J), loosen the 3 connectors but do not disconnect the cables until the hardware that fastens the power splitter to the main deck (G) has been removed. This will keep from damaging the center conductors.

• When removing the 3 dB attenuator (E), hold connector (F) with a 1/4-inch open-end wrench while loosening the attenuator’s connector

using a 5/16-inch open-end wrench.

Re-assembly Hints for Option 550

Hints for assembling Option 550 after repair. Refer to Figure 4-4

and Figure 4-5.

• To install the bulkhead connector (A), place lock washer and nut (H) on bulkhead connector and torque to 25 inch-pounds.

• When fastening the power sensor to the main deck (G), torque the 2 screws holding it to 3 inch-pounds.

• Connect the power sensor connector (D) to the cable (B) and torque to 8 inch-pounds while holding connector (C) with a 1/4-inch open-end wrench.

• When connecting the 3 dB attenuator (E) to the 3 dB attenuator to power splitter cable, torque to 8 inch-pounds while holding connector (F) with a 1/4-inch open-end wrench.

26 Chapter 4

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Maintenance and Repair

Repair

• When installing the power splitter (J), connect the 3 cables before fastening the power splitter to the main deck (G). Hold the nut with a 3/16-inch open-end wrench while tightening the corresponding screw (2 each) to secure the power splitter to the main deck.

• All coax connectors should be torqued to 8 inch-pounds.

Maintenance and Repair

Chapter 4 27

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Maintenance and Repair

Repair

Replaceable Parts

Table 4-1 N5532A Series Sensor Module Replaceable Parts

Maintenance and Repair

Description Part

Number

Power sensor adapter (same as N5532A Opt 019)

Screw, metric,

3.0 x 0.50 Front screws for cover attachment

Screw, socket head cap, metric 1.6 x

0.35, 10 mm long For sensor mounting

Washer, lock, helical, #0, 0.062-in-ID,

0.1-in-OD For sensor mounting

Screw, tapping, 4-20,

0.835 inch long, pan head, TORX For support block mounting and rear screws for cover attachment

N5532-60013 X X X X

0515-0667 X X X X

0515-1185 X X X X

2190-0572 X X X X

0624-0824 X X X X

Opt 504 (4 GHz)

Opt 518 (18 GHz)

Opt 526 (26 GHz)

Opt 550 (50 GHz)

Screw, 4-40, 0.562 inch long, pan head, Pozidrive For power splitter mounting

Washer, lock, #4, helical, 0.115-in-ID For power splitter mounting

Washer, lock, 3/8 inch, 0.384-in-ID For mounting

2.4 mm input connector

28 Chapter 4

2200-0091 X X X

2190-0003 X X X

2190-0022 X

Page 29

Maintenance and Repair

Repair

Table 4-1 N5532A Series Sensor Module Replaceable Parts

Maintenance and Repair

Description Part

Number

Hex nut, dbl chamfer, M10 x 1.0, 6 mm thick For mounting

2.4 mm input connector

Nut, 4-40,

0.063-in-thick For power splitter mounting

Washer, lock, 7/16 inch, 0.439-in-ID For Type-N connector

Hex nut, UNEF-2B-THD,

0.094-in-thick For Type N connector

0535-0992 X

2260-0002 X X X

2190-0104 X X

2950-0132 X X

Opt 504 (4 GHz)

Opt 518 (18 GHz)

Opt 526 (26 GHz)

Opt 550 (50 GHz)

Washer, lock, helical, #2, 0.088-in-ID For cable bracket

Screw, socket head cap, 2-56,

0.25-in-long For cable bracket

Setscrew, 4-40,

0.25-in-long For sensor cable bracket (see Figure

4-5)

Setscrew, 6-32,

0.125-in-long For input connector

Hex nut, 2-56,

0.062-in-thick For power splitter mounting

Deck, main N5532-00001 X X X

Deck, main (526) N5532-20001 X

2190-0112 X X X X

3030-0053 X X X X

3030-0824 X X X X

3030-0022 X

0610-0002 X

Chapter 4 29

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Maintenance and Repair

Repair

Table 4-1 N5532A Series Sensor Module Replaceable Parts

Description Part

Number

Maintenance and Repair

Deck support block (right)

Deck support block (left)

Spacer For splitter

Bracket, cable (top) (see Figure 4-4)

Bracket, cable (bottom) (see Figure

4-5)

Cover, plastic (top) 11722-40001 X X X X

Cover, plastic (bottom)

Cable clip For sensor and RF output cables

N5532-20021 X X X X

N5532-20022 X X X X

N5532-20003 X

11722-20006 X X X X

11722-20007 X X X X

11722-40002 X X X X

11722-40003 X X X X

Opt 504 (4 GHz)

Opt 518 (18 GHz)

Opt 526 (26 GHz)

Opt 550 (50 GHz)

Label, option ID 5185-1867 X X X X

Label, product ID N5532-80004 X X X X

3 dB attenuator, 26 GHz

3 dB attenuator, 50 GHz

Input connector, Type-N

Input connector,

3.5 mm

Input connector,

2.4 mm

Power splitter,

26.5 GHz

Power splitter, 50 GHz

Power sensor,

4.2 GHz

08493-60013 X X X

08490-60010 X

5064-3806 X X

08673-60402 X

N5532-20015 X

5086-7408 X X X

N5532-60002 X

N5532-60011 X

30 Chapter 4

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Maintenance and Repair

Repair

Table 4-1 N5532A Series Sensor Module Replaceable Parts

Maintenance and Repair

Description Part

Number

Power sensor, 18 GHz

Power sensor,

26.5 GHz

Power sensor, 50 GHz

Cable, input connector to splitter

Cable, RF input,

2.4 mm

Cable, splitter to output

Cable, splitter to attenuator

N5532-60012 X

N5532-60004 X

N5532-60005 X

N5532-20004 X X

N5532-20007 X

N5532-20009 X

N5532-20018 X X X

N5532-20010 X

N5532-20011 X

Opt 504 (4 GHz)

Opt 518 (18 GHz)

Opt 526 (26 GHz)

Opt 550 (50 GHz)

Cable, attenuator to sensor

Cable, sensor output, shielded

Cable, RF output,

3.5 mm, 66 inches long

Cable, RF output,

2.4 mm, 66 inches long

N5532-20012 X

N5532-20006 X

N5532-20019 X X

N5532-60010 X X X X

N5532-20013 X X X

N5532-20017 X

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Maintenance and Repair

Calibration

Agilent Technologies recommends that repair and calibration of the

Maintenance and Repair

N5532A Sensor modules be performed at an Agilent Technologies service center. The service center has the required calibration standards and the ability to produce a calibration data disk in the format that the N5531S or N5530S Measuring Receiver System requires.

However, if your cal lab currently calibrates Agilent thermocouple power sensors such as the 8481A, 8482A, or 8487A, and the calibration standards and test metrology used meet the N5532A specifications listed in Table 3-1 on page 16, you may wish to develop your own calibration process. Refer to Agilent Technologies Application Notes 1449-1 through 1449-4 for information regarding the fundamentals of RF and microwave power measurements. Application Note 1449-1 includes an overview of the theory and practice of sensor calibration.

Figure 1-1 on page 7 shows that the N5532A Sensor Modules consist

basically of a power splitter and an Agilent 848xA Power Sensor with a padded input. The module is calibrated as a standard power sensor with the RF OUTPUT TO PSA line terminated with a matched 50 Ω load.

The calibration power at the input should be 0 dBm ±2 dB. This is to ensure enough power is provided so the sensing element in the N5532A Sensor Module stays above its noise floor. The maximum calibration must not exceed +10 dBm to avoid non-linearities in the calibration standards (reference sensor or standard sensor).

The presence of the splitter and cable create a ripple in the sensor’s input efficiency, so many frequency calibration points are required to accurately characterize the sensor module.

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Calibration

Figure 4-6 Cal Factor (Ripple Due to Splitter and PSA Line Loading)

Maintenance and Repair

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Maintenance and Repair

Calibration

Table 4-2 Recommended Calibration Points

N5532A Power Sensor Frequency Points

Option 504 100 kHz

Maintenance and Repair

Option 518 10 MHz

300 kHz

1 MHz

3 MHz

5 MHz

10 MHz

30 MHz

50 MHz

100 MHz to 4.2 GHz in 100 MHz steps

30 MHz

50 MHz

100 MHz to 18 GHz in 100 MHz steps

Option 526 30 MHz

50 MHz

100 MHz to 26.5 GHz in 100 MHz steps

Option 550 30 MHz

50 MHz

100 MHz to 50 GHz in 100 MHz steps

Typical Cal Factor ranges for the 848xA Power Sensors are between 90% and 100%, depending on the efficiency of the sensor’s thermocouple over the specified frequency range. With the added loss from the other passive components in front of the power sensor, there is approximately another 9 to 11 dB loss (or another 25% loss) from 50 MHz to 26.5 GHz. This, coupled with the fact that typical power sensor Cal Factor is defined with a constant power level at the input, and this application has a sloped power input, an additional 25% efficiency component is added. As a result, the N5532A Sensor Module will have about a 40% Cal Factor at 26.5 GHz. This is acceptable because the sensor is characterized with this behavior and thus will be corrected in the N5531S/30S Measuring Receiver System.

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Maintenance and Repair

Calibration

Upon calibrating the sensor module, the cal factor data is stored on a floppy disk. This disk allows you to transfer the cal data to the N5531S or N5530S Measuring Receiver System. Since there are hundreds of data points, manual entry is highly impractical.

Cal Factor Data File Format

The N5532A data, “CFData.xml”, is stored in an xml format. On each data disk, the data file is accompanied with an xsl file, “CalTable.xsl”. This file contains the xml formatting instructions which are used by an xml viewer, such as Microsoft Internet Explorer. However, the xml file may be viewed by any text editor and will appear as shown below.

The system software does not need the xsl file because it’s not trying to display the data. The system, however, does look for the specific “bookmarks” or “tags” used by the xml format. So, for the system to properly read the data from the file, the calibration data needs to be stored as shown in the following sample file.

Figure 4-7 File Format for the N5532A Sensor Module Data Disk (Two Data

Points Shown)

Maintenance and Repair

<?xml version="1.0" encoding="utf-8"?>  <?xml-stylesheet type="text/xsl" href="CalTable.xsl"?> <Calibration>

</Calibration>

The structure of the file is as follows:

• The first 3 lines are for the xml format.

• The fourth line marks the start of the calibration data, while the last line marks the end of the calibration data.

• The next 5 lines contain sensor-specific information: data format version, model number, option, serial number, and date calibrated.

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Calibration

• The next line is the reference calibration factor.

• The rest of the data file is filled with frequency-dependent data. There are 6 lines for every data point and each data point is marked by the beginning <CalFactor> and the ending </CalFactor>. The

Maintenance and Repair

data set includes frequency, cal factor, cal factor uncertainty, reflection magnitude, reflection phase, and reflection magnitude

uncertainty.

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Contacting Agilent Technologies

Agilent Technologies has offices around the world to provide you with complete support for your accessories. To obtain servicing information or to order replacements, contact the nearest Agilent Technologies office listed in Table 4-3 on page 37. In any correspondence or telephone conversations, refer to your accessory by its product number and full serial number.

Table 4-3 Contacting Agilent Technologies

Online assistance: www.agilent.com/find/assist

Maintenance and Repair

Contacting Agilent Technologies

Maintenance and Repair

United States

(tel) 1 800 452 4844

Canada

(tel) 1 877 894 4414 (fax) (905) 282-6495

Europe

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

New Zealand

(tel) 0 800 738 378 (fax) 64 4 495 8950

Latin America

(tel) (305) 269 7500 (fax) (305) 269 7599

Japan

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

Australia

(tel) 1 800 629 485 (fax) (61 3) 9210 5947

Asia Pacific

(tel) (852) 3197 7777 (fax) (852) 2506 9284

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Maintenance and Repair

Contacting Agilent Technologies

Maintenance and Repair

38 Chapter 4

Agilent N5532A Users Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

1 General Information

Description

N5532A Block Diagram

Instruments Covered by Manual

2 Installation

Initial Inspection

Operating Precautions

Installing the Calibration Factors

Installing the Cal Factors in the N5530S

Installing the Cal Factors in the N5531S, N5530SE26, and N5530SE50

3 Specifications

N5532A Sensor Module Specifications

N5532A Sensor Module Supplemental Information

4 Maintenance and Repair

Maintenance

Repair

Power sensor replacement

Disassembly Hints for Options 504, 518, and 526

Re-assembly Hints for Options 504, 518, and 526

Disassembly Hints for Option 550

Re-assembly Hints for Option 550

Replaceable Parts

Calibration

Cal Factor Data File Format

Contacting Agilent Technologies