Agilent Technologies E4404B Quick start guide

Installation Note
Part Number E4404-90007 Supersedes: E4404-90006
Printed in USA July 2005
Agilent Technologies
E4404B/05B Spectrum Analyzers and
E7403A/04A EMC Analyzers
Low Frequency Extension (Option UKB)
Retrofit Kit

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.
© Copyright 2002 - 2005 Agilent Technologies, Inc.

Installation Note E4404-90007 3
Introduction
This procedure can be used to retrofit a 100 Hz Low Frequency Extension (Option UKB) into your analyzer.
This kit contains nameplates and connector labels for all models listed. Only one nameplate and one
connector label will be used for each model.
To ensure that this newly installed option is functioning properly, the procedure that follows includes the
requirement of performing certain adjustments and performance verification tests. However, the completion
of these tests does not guarantee that the instrument meets all advertised specifications.
Software is required to perform the required adjustments, and can be used to automate the performance
verification testing. Information on how to obtain this software can be found at:
www.agilent.com/find/calibrationsoftware
While Agilent does recommend that a full calibration be performed after the installation of this upgrade, the
end user must ultimately determine whether they want this service or not. If a full calibration is required,
arrangements regarding the level of calibration must be made between the end user and the calibration
provider.
Products Affected: . . . . . . . . . . . . . . . . . . . . . . . . . . E4404B, E4405B
E7403A, E7404A
Serial Numbers:. . . . . . . . . . . . . . . . . . . . . . . . . . . . Any
Options: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . UKB
To Be Performed By: . . . . . . . . . . . . . . . . . . . . . . . . (X) Agilent Technologies Service Center
(X) Personnel Qualified by Agilent
( ) Customer
Estimated Installation Time: . . . . . . . . . . . . . . . . . 3.0 Hours
Estimated Verification Time: . . . . . . . . . . . . . . . . . 2.0 Hours
Additional Recommended Task: . . . . . . . . . . . . . . . Agilent recommends a full calibration be performed to
verify instrument specifications

Installation Note E4404-90007
4
Installation Kit Parts Lists
Quantity Description Part Number
1 Cable Assembly, Filtered Low Band RF Input (W35) E4404-20026
1 Connector Label, E4404B/E7403A Option UKB E4404-80007
1 Connector Label, E4405B/E7404A Option UKB E4405-80005
1 Nameplate, E4404B Option UKB E4404-80008a
a. ESA unique material
1 Nameplate, E4405B Option UKB E4405-80006a
1 Nameplate, E7403A Option UKB E7403-80002b
b. EMC unique material
1 Nameplate, E7404A Option UKB E7404-80002b
1 Option UKB Retrofit Installation Note this note
1 Option Upgrade Entitlement Certificate ---

Installation Note E4404-90007 5
Tools Required
• T-10 TORX screwdriver
• T-15 TORX screwdriver
• Flat-blade screwdriver
• Sharp knife or razor blade
• Function Generator
• Synthesized Sweeper
• Digital Voltmeter
• Power Meter, Dual-Channel
• RF Power Sensor (2 required)
• Microwave Power Sensor
•50ΩTermination
• Power Splitter
• 20 dB Attenuator
• APC 3.5 (m) Cable Assembly
• APC 3.5 (m) to Type N (m) Adapter
• APC 3.5 (m) to Type N (f) Adapter
• BNC Tee (f,m,f)
• Dual Banana to BNC (f) Adapter
Torque Settings
To avoid potential RFI leakage and prevent connector damage, tighten to the following torque limits:
Item Torque
In-lb N-cm
SMA Connectors 8.5 95
3-mm, T-10 TORX screws 9 102
4-mm, T-15 TORX screws 21 236

Installation Note E4404-90007
6
Procedure
Verify A8A1 3 GHz RF Assembly Part Number
1. Turn on the analyzer and wait for the initial adjustments to complete.
2. Press System, More, Show Hdwr. This displays the Show Hardware screen, which lists the part number and
serial number of most of the installed board assemblies.
3. Locate the part number of the “50Ω3 GHz Input” assembly.
4. If the part number of the 50Ω3 GHz Input assembly is E4403-60033 or lower, the A8A1 3 GHz RF
assembly must be replaced. If the analyzer does not have the High Stability Frequency Reference,
Option 1D5, order E4403-60073. If the analyzer does have Option 1D5, order E4403-60074.
WARNING Before you disassemble the instrument, turn the power switch OFF and unplug the
instrument. Failure to unplug the instrument 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. Refer to the
documentation that pertains to your instrument for information about static-safe workstations
and ordering static-safe accessories.

Installation Note E4404-90007 7
Dress Cover Removal
1. Referring to Figure 1, disconnect the analyzer from ac power (1).
2. Remove any adapters or cables (2) connected to the front frame.
3. Carefully place the analyzer on the work surface with the front frame (3) facing down.
4. Position the handle (4) as shown.
5. Remove the four screws (5) that hold the rear frame and dress cover in place.
6. Remove the rear frame (6).
7. Pull the dress cover (7) off towards the rear of the analyzer.
Figure 1 Dress Cover and Rear Frame Removal

Installation Note E4404-90007
8
Chassis Cover Removal
1. Lay the analyzer flat as shown in Figure 2.
2. Remove the 15 screws (2) and (3) attaching the chassis cover to the chassis. Note that the number of
screws attaching the chassis cover may vary with option mixes.
3. Remove the chassis cover (1) from the chassis.
Figure 2 Chassis Cover Removal

Installation Note E4404-90007 9
A1 Front Frame Assembly
CAUTION Use ESD precautions when performing this replacement procedure.
1. Refer to Figure 3. Remove the two screws (1), on the bottom side of the instrument, that secure the front
frame to the RF assembly.
Figure 3 A1 Front Frame Assembly Removal
2. Place the instrument with the top side facing up and remove the remaining two screws (2) that secure the
front frame subpanel to the chassis.
3. Slide the front frame forward until it catches on the tabs on the sides of the chassis.

Installation Note E4404-90007
10
4. Refer to Figure 4. Disconnect the ribbon cable (1) from the A1A1 front panel interface board.
NOTE Analyzers with Option B7B will have a second ribbon cable connecting to A1A1.
Disconnect the second ribbon cable if present.
Figure 4 Front Frame Ribbon Cable
5. Carefully pull the sides of the front frame subpanel away from the chassis and over the tabs on the
chassis.
6. Slide the front frame forward to disengage from the chassis assembly.

Installation Note E4404-90007 11
A1A1 Front Panel Interface Board Removal
1. Refer to Figure 5. Remove the disk drive door (1).
2. Remove the RPG knob (2).
3. Remove the volume knob (3).
TIP You may need to exert considerable force in order to remove the RPG knob. It may be
necessary to pry it off using a screwdriver as shown in Figure 5.
Figure 5 Removing the Front Frame Knobs

Installation Note E4404-90007
12
4. Refer to Figure 6. Disconnect the two 2-wire backlight cables (1) from the front panel interface inverter
board.
5. Disconnect W3 ribbon cable (2) from the front panel interface board.
Figure 6 Disconnecting the Front Frame Wiring Connections
CAUTION The W3 display ribbon cable connector (2) is delicate. With a small screwdriver or similar tool,
gently push the lock tabs out from the back of the connector. Excessive force on the locking tab
can break the retaining clips, and if broken, board replacement will be necessary.

Installation Note E4404-90007 13
6. Refer to Figure 7. Remove the four screws (10) that secure the A1A1 front panel interface board (11) to
the front frame.
7. Remove the front panel interface board from the front frame assembly.
Removal
NOTE There is a water-seal gasket placed around the volume control shaft that will need to be
repositioned during the replacement procedure.
Figure 7 Front Frame Assembly Parts

Installation Note E4404-90007
14
Attach Nameplate to Front Frame
1. Locate the correct nameplate in the kit. The nameplate is labelled with the analyzer product number and
the analyzer’s frequency range. This kit contains multiple nameplates, use the nameplate for your model.
2. Remove the existing nameplate (1) as shown in Figure 8.
3. Clean the surface (2) of any adhesive residue.
4. Peel the backing (3) off the new nameplate and place it (4) as shown.
Figure 8 Nameplate Replacement

Installation Note E4404-90007 15
Attach Connector Label and Connector Covers to Front Frame
1. Locate the appropriate connector label in the kit. The connector label has holes to accommodate the
various front panel connectors and the volume control. The frequency range of the analyzer appears near
the hole next to the INPUT connector. This kit contains two connector labels identifying different
frequency ranges for different analyzers. Choose the connector label that is appropriate for the analyzer
being retrofitted.
2. Refer to Figure 9. If the analyzer does not have a tracking generator, remove the hole plug for the RF OUT
connector.
3. Remove the two connector covers from the front panel by pinching them from the sides and removing them
(4) through the front of the front frame assembly.
Figure 9 Connector Covers

Installation Note E4404-90007
16
Figure 10 Connector Label Installation
4. Peel off the old connector label loosening any residual adhesive with a sharp knife or razor blade as you go.
5. Before installing the new connector label, make sure the surface is free of any adhesive residue left from
the old label. Failure to do so may result in an uneven (lumpy) appearance of the new label.
6. Peel the backing (2) off the new label, as shown in Figure 10.
7. Align and install the label by placing a finger in the RF OUT and VOLUME holes (3). Observe the
alignment of the INPUT and PROBE POWER holes.
TIP Refer to Figure 9. It may be helpful to trim off about 2 mm of the tabs (5) on the connector
covers prior to reinstalling them. This will help in aligning the covers.
8. Reinstall the two connector covers from the front panel by pinching them from the sides and installing
them through the front of the assembly.
9. Align the connector covers so they open downward.
10.Reinstall the hole plug that was removed if your analyzer does not have a tracking generator.

Installation Note E4404-90007 17
Figure 11 Microwave RF Assembly Front View, Semi-rigid Cables E7403A and E7404A
1. Refer to Figure 11. Locate W19 (1). W19 is a semi-rigid coax cable connected between the A8A3 DC block
(3) and A8FL1, the 3 GHz Low Pass Filter (4). Remove W19 (1).
2. Disconnect W8 (2) from the A8A3 DC block (3).
3. Rotate the analyzer so that the right side is resting on the table.
4. Disconnect W8 from A8A1A2J2.
5. Remove the A8A3 DC block (3).

Installation Note E4404-90007
18
Figure 12 Connect Semi-Rigid Cables to Microwave RF Assembly
6. Refer to Figure 12. Connect the new W35 coax cable (2) supplied in this kit between the output of A8FL1
(1) and A8A1A2J2 (3). Torque the connections to 10 in-lbs.

Installation Note E4404-90007 19
Replace A1A1 Front Panel Interface Board
1. Refer to Figure 13. Place the front panel interface board (11) in the correct position in the front frame
assembly. Make sure the water seal is in place around the volume control shaft.
2. Replace the four screws that secure the board to the front frame. Tighten them to 9 inch-pounds.
Figure 13 Front Frame Assembly Parts

Installation Note E4404-90007
20
3. Refer to Figure 14. Connect the W3 display ribbon cable (2) to the front panel interface board.
TIP An easy way to insert this delicate cable into the connector is to place your finger on the
cable, in the center of the LCD display, and gently slide the cable toward the connector until
they align. Then, providing guidance with the other hand as necessary, slide the cable until
the end slips into the connector.
Ensure the cable end is seated completely and is aligned straight within the connector body.
Continue to hold the cable in place with your finger, and with the other hand gently press
the locking tabs (5) into place.
If you experience display problems, check this connection.
4. Reconnect the two 2-wire backlight cables (1) to the inverter board, making sure that the cables are
dressed away from the openings for the control knobs.
Figure 14 Connecting the Front Frame Wiring Connections
5. Press the volume and RPG knobs onto their control shafts.