Agilent Technologies PSG Series Guide de démarrage rapide

Installation Note

Part Number E8251-90045

Printed in USA November 2002

Agilent Technologies PSG Series Signal Generators

E8241A, E8244A, E8251A, and E8254A

Add Option 1E1 (Attenuator) Upgrade Kit

Kit Part Number: E8251-60088

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.

PSG Series Signal Generators E8241A, E8244A, E8251A, and E8254A

Add Option 1E1 (Attenuator) Upgrade Kit Part Number:

E8251-60088

Introduction

This upgrade kit adds Option 1E1 (Attenuator) to the:

• 250kHz to 20GHz PSG-L Series CW E8241A

• PSG-A Series Analog E8251A

• 250kHz to 40GHz PSG-L Series CW E8244A

• PSG-A Series Analog E8254A.

Installation includes the following major steps:

1. Remove the instruments covers.

2. Install the attenuator hardware for Option 1E1.

3. Access the Agilent PSG webpage to activate Option 1E1.

4. Re-assemble the signal generator.

Product Affected: . . . . . . . . . . . . . . . . . . . . . . . . . E8241A, E8244A, E8251A, and E8254A

Serial Numbers: . . . . . . . . . . . . . . . . . . . . . . . . . . All

Options: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

To Be Performed By: . . . . . . . . . . . . . . . . . . . . . . (X) Agilent Technologies Service Center

( ) Personnel Qualified by Agilent Technologies

( ) Customer

Estimated Installation Time: . . . . . . . . . . . . . . . 1.5 hours

Estimated Verification Time: . . . . . . . . . . . . . . . E8241A/51A = 8.0 hours

E8244A/54A = 15.0 hours

Installation Kit Parts List

Tools Required

• TORX T-10 driver

• TORX T-15 driver

• TORX T-20 driver

• 5/16” Open ended wrench

•Longnosepliers

•Scissors

Safety Considerations

WARNING Before you disassemble the instrument, turn the power switch off and

unplug the signal generator. Failure to unplug the signal generator can

result in personal injury.

CAUTION Electrostatic discharge (ESD) can damage or destroy electronic components. All

work on electronic assemblies should be performed at a static-safe workstation.

Item Quantity Description Part Number

1 1 Attenuator 115dB E8251-60070

2 1 Semi Rigid Cable (40GHz) E8251-20025

3 1 Semi Rigid Cable (20GHz) E8251-20026

4 1 Semi Rigid Cable (20GHz) E8251-20027

5 1 Semi Rigid Cable (40GHz) E8251-20028

6 2 Mounting Screw 0515-1035

7 1 Label 7120-1232

8 1 Installation Note E8251-90045

Checking Signal Generator Functionality

Use the following procedure to confirm that the signal generator powers up and that the internal check

identifies no errors. The internal check evaluates the operation of the signal generator and returns an error

message if it detects a problem.

NOTE When signal generators with Option 1E5 are first connected to ac line power, the error

message ERROR 514, Reference Oven Cold occurs, which causes both the OVEN COLD

annunciator and the ERR annunciator to turn on.

After approximately five minutes, the OVEN COLD annunciator automatically clears, but the

ERR annunciator remains on until all errors are cleared from the error queue.

1. Turn on the signal generator and let it warm up for at least five minutes.

2. Run the instrument self-test by pressing Utility > Instrument Info/Help Mode > Self Test > Run Complete Self

Test. Upon completion, a summary of the self-test is displayed. Use the service guide to troubleshoot any

failures detected by this test.

NOTE Some circuits can require up to 50 minutes to warm up before passing the self-test. If

self-tests continue to fail after 50 minutes of warm up, troubleshoot the instrument.

3. Check to see if the ERR annunciator is on.

•IftheERR annunciator is on, review the error messages in the error queue by pressing

Utility > Error Info >View Next Error Message. The first error message in the error queue appears in the

display text area. (Refer to the signal generator error messages document for information about each

error message.)

After resolving all problems causing errors, press Clear Error Queue(s).

•IftheERR annunciator is off, the signal generator functionality check has passed.

Removing Outer and Inner Covers

Tools Required

•T-10driver

•T-15driver

•T-20driver

Removing the Outer Cover

Refer to Figure 1.

1. Disconnect the power cord.

2. Using a T-20 driver, remove the two strap handles (1) by loosening the screws (2).

3. Using a T-15 driver, remove the center screws (3) on the four rear-panel feet (4).

4. Remove the four bottom feet (5) from the cover by pulling the tab and pushing the foot.

5. Slide the outer cover (6) off the frame.

Removing the Inner Top Cover

Refer to Figure 2.

1. Using a T-10 driver, remove the ten screws (1) from the inner-top cover (2).

2. Remove the inner-top cover.

Figure 1 Outer Instrument Cover Removal

Figure 2 Inner Instrument Cover Removal

Installation Procedure

Remove the RF Cable from the Coupler Detector to the RF Output Connector

1. Position the signal generator with the A31 Motherboard facing you and the RF deck on top.

2. Using a 5/16” open wrench, remove the semi-rigid RF cable connecting the A23 Coupler Detector to the

RF output connector.

Installing the AT1 115 dB Attenuator to the RF deck

Refer to Figure 3.

1. Position the attenuator (AT1) so it can be attached to the RF deck.

2. Using the T-10 driver, insert the two screws (1) through the side deck into the metal bracket that is

attached to the attenuator. Torque these screws to 9 in-lbs.

3. Using the 5/16” open ended wrench, attach the semi rigid cable W24 between the A23 Coupler Detector

output connector and the attenuator input connector; torque to 8 in-lbs.

• 20 GHz models : use E8251-20026

• 40 GHz models: use E8251-20025

4. Using the 5/16” open ended wrench, attach the semi rigid cable W25 between the A23 Coupler Detector

output connector and the 3.5mm RF output connector; torque to 8 in-lbs.

• 20 GHz models : use E8251-20027

• 40 GHz models: use E8251-20028

Figure 3 AT1 dB 115 Attenuator (Option 1E1)

A23

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