Keysight Technologies E8257N Installation and operation manual

Notice: This document contains references to Agilent.
Please note that Agilent’s Test and Measurement busi-
ness has become Keysight Technologies. For more in-
formation, go to www.keysight.com.
Keysight E8257D/57N/67D and E8663D
PSG Signal Generators Add Option UNX
(Ultra-Low Phase Noise Performance)
Kit Part Numbers:
E8251-60417, E8251-60980, and E8251-60991
Installation Note
Part Number E8251-90309
Printed in USA August 2014

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 2006–2014Keysight Technologies Inc.

3
Add Option UNX (Ultra-Low Phase Noise Performance)
Kit Part Numbers: E8251-60417, E8251-60980, and E8251-60991
Product Affected: . . . . . . . . . . . . . . . . . . . . . . . . . E8257D/57N/67D and E8663D
Serial Numbers: . . . . . . . . . . . . . . . . . . . . . . . . . . All
Options: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
To Be Performed By: . . . . . . . . . . . . . . . . . . . . . . (X) Agilent Technologies Service Center
(X) Personnel Qualified by Agilent Technologies
(X) Customer
Estimated Installation Time: . . . . . . . . . . . . . . . 2.0 hours
Estimated Verification Time: . . . . . . . . . . . . . . . 2.0 hours

4
Introduction
This upgrade kit adds Option UNX (Ultra-Low Phase Noise Performance) to an E8257D (Analog) or E8267D (Vector) PSG
Signal Generator. This kit applies to instruments that have either a standard reference assembly or Option UNR.
Installation includes the following major steps, starting on page 7:
1. Check signal generator functionality.
2. Record A31 Motherboard version number.1
3. Check firmware version and upgrade if <C.04.23.
4. Update the Arrays if Serial Number Prefix is < US/MY 4805
5. Update the Arrays if Serial Number Prefix is ≥US/MY 5150
6. Remove the outer and inner signal generator covers.
7. Remove the A32 10 MHz Crystal Oscillator (for instruments with Option UNR).1
8. Install the A32 10 MHz Crystal Oscillator.
9. Replace the A31L400 (E8257D) or A31L44 (E8267D) (for instruments with motherboard versions less than A0101)1
10. Install W122 Cable and 50 Ohm termination.1
11. Connect W135 to W122.2
12. Install the A7 Reference assembly.1
13. Install A43 board and cables.3
14. Activate Option UNX
15. Verify proper installation of Option UNX.
16. Re-assemble the signal generator.
17. Verify signal generator calibration.
1. For instruments with serial prefixes <US4805/MY4805.
2. For instruments with serial prefixes >US4805/MY4805.
3. For instruments with serial prefixes >US5150/MY5150.

5
Installation Kit Parts List
E8251-60417
(For instruments with serial prefix < US4805/MY4805)
E8251-60980
(For instruments with serial prefix ≥ US4805/MY4805)
Item Quantity Description Part Number
1 2 Screw M3 x 0.5 8mm–lg 0515-0372
2 2 Screw M3 x 0.5 4mm–lg 0515-0663
3 3 Cable Tie 1400-0249
4 1 Termination-SMA male coaxial 50 ohm 1810-0118
5 2 Inductor–Fixed 470nH ± 2% 9140-2044
6 1 Bracket, Adapter, Reference Oscillator E8251-00338
7 1 Cable Assy semi–rigid, UNX 1 GHz E8251-20384
8 1 A7 Reference Board Assy (Option UNX) E8251-60648
9 1 A32 10 MHz Crystal Oscillator–UNX E8251-60626
10 1 Installation Note, UNX Upgrade Kit E8251-90309
11 1 Entitlement Certificate n/a
Item Quantity Description Part Number
1 2 Screw M3 x 0.5 4mm–lg 0515-0663
2 1 Bracket, Adapter, Reference Oscillator E8251-00338
3 1 A32 10 MHz Crystal Oscillator–UNX E8251-60626
4 1 Installation Note, UNX Upgrade Kit E8251-90309
5 1 Entitlement Certificate n/a

6
E8251-60991
(For E8257D/57N and E8663D with serial prefix ³ US5150/MY5150)
Tools Required
•TORXT-10driver
•TORXT-15driver
•TORXT-20driver
• Needle-nose pliers
Item Quantity Description Part Number
1 2 Screw M3 x 0.5 4mm–lg 0515-0663
2 1 Bracket, Adapter, Reference Oscillator E8251-00338
3 1 A32 10 MHz Crystal Oscillator–UNX E8251-60626
4 1 Cable Retainer E8251-40001
5 1 Retainer, Cable Top E8251-40007
6 1 Cable, LB Output to Amp Filter Board, 2 Piece, Bottom E8251-20488
7 1 Cable, LB Output to Amp Filter Board, 2 Piece, Top E8251-20489
8 1 A43, Assembly, Amp Filter Board E8251-60633
91 Installation Note, UNX Upgrade Kit E8251-90309
10 1 Entitlement Certificate n/a

7
Safety Considerations
WARNING Before you disassemble the signal generator, turn the power switch off and unplug the
power cord. 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.
Check Signal Generator Functionality
Use the following procedure to confirm that the signal generator powers up and 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 the signal generator is 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 signal generator self-test by pressing Utility > Instrument Info/Help Mode > Self Test > Run Complete Self
Test. Upon completion, a summary of the self-test will be displayed. Use the E8257D/67D PSG Service Guide,
E8251-90359, to troubleshoot any failures detected by the test.
NOTE Some circuits may 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. The first page of error messages 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.

8
Record A31 Motherboard Version Number (For Instruments with Serial Prefixes
<US4805/MY4805)
1. Press Utility > Instrument Info/Help Mode > Installed board info.
2. Find the information for the Motherboard.
3. Write down the version number of the Motherboard.
Check Firmware Version and Upgrade if < C.04.23
1. Press Utility > Instrument Info/Help Mode > Diagnostic Info.
2. Find the firmware information.
3. If the version of firmware is <C.04.23, upgrade the firmware.
Update the Arrays if Serial Number Prefix is < US/MY 4805
1. Connect the instrument to a LAN and write down the IP address.
Press Utility > Instrument Info/Help Mode > Diagnostic.
2. Load the IP address into the instrument.
Press Utility > GPIB/RS-232/LAN > LAN Setup > IP Address. Enter the IP address.
3. Using the web browser on the PC, enter the following URL, replacing <ip-address> with the actual IP address you
entered into the instrument in the previous step.
Type: http://<ip-address>/update.
4. Copy the script below and paste it into the text area on the System Update page shown in Figure 1.
Figure 1 System Update Web Page

9
Array Script:
cs "REF BANDWIDTH INDEX", 8
cd "REF BANDWIDTH INDEX", 0, 2.5e01
cd "REF BANDWIDTH INDEX", 1, 5.5e01
cd "REF BANDWIDTH INDEX", 2, 1.25e02
cd "REF BANDWIDTH INDEX", 3, 3.0e02
cd "REF BANDWIDTH INDEX", 4, 6.5e02
cd "REF BANDWIDTH INDEX", 5, 1.55e03
cd "REF BANDWIDTH INDEX", 6, 3.65e03
cd "REF BANDWIDTH INDEX", 7, 1.05e04
cc "REF BANDWIDTH INDEX"
cs "REF BANDWIDTH LATCH VALUES", 8
cd "REF BANDWIDTH LATCH VALUES", 0, 0
cd "REF BANDWIDTH LATCH VALUES", 1, 1
cd "REF BANDWIDTH LATCH VALUES", 2, 2
cd "REF BANDWIDTH LATCH VALUES", 3, 3
cd "REF BANDWIDTH LATCH VALUES", 4, 4
cd "REF BANDWIDTH LATCH VALUES", 5, 5
cd "REF BANDWIDTH LATCH VALUES", 6, 6
cd "REF BANDWIDTH LATCH VALUES", 7, 7
cc "REF BANDWIDTH LATCH VALUES"
ky 58881
5. Press Execute.
Update the Arrays if Serial Number Prefix is ≥US/MY 5150
1. Connect the instrument to a LAN and write down the IP address.
Press Utility > Instrument Info/Help Mode > Diagnostic.
2. Load the IP address into the instrument.
Press Utility > GPIB/RS-232/LAN > LAN Setup > IP Address. Enter the IP address.
3. Using the web browser on the PC, enter the following URL, replacing <ip-address> with the actual IP address you
entered into the instrument in the previous step.
Type: http://<ip-address>/update.
4. Copy the script below and paste it into the text area on the System Update page shown in Figure 1.
Figure 2 System Update Web Page

10
Array Script:
cs "SPECIALS LATCH VALUE", 18
cd "SPECIALS LATCH VALUE",0,+5.4000000000000E+01
cd "SPECIALS LATCH VALUE",1,+5.4000000000000E+01
cd "SPECIALS LATCH VALUE",2,+5.4000000000000E+01
cd "SPECIALS LATCH VALUE",3,+5.4000000000000E+01
cd "SPECIALS LATCH VALUE",4,+5.4000000000000E+01
cd "SPECIALS LATCH VALUE",5,+5.4000000000000E+01
cd "SPECIALS LATCH VALUE",6,+4.9000000000000E+01
cd "SPECIALS LATCH VALUE",7,+4.9000000000000E+01
cd "SPECIALS LATCH VALUE",8,+5.3000000000000E+01
cd "SPECIALS LATCH VALUE",9,+5.3000000000000E+01
cd "SPECIALS LATCH VALUE",10,+5.1000000000000E+01
cd "SPECIALS LATCH VALUE",11,+5.1000000000000E+01
cd "SPECIALS LATCH VALUE",12,+1.1000000000000E+01
cd "SPECIALS LATCH VALUE",13,+1.1000000000000E+01
cd "SPECIALS LATCH VALUE",14,+4.3000000000000E+01
cd "SPECIALS LATCH VALUE",15,+4.3000000000000E+01
cd "SPECIALS LATCH VALUE",16,+2.7000000000000E+01
cd "SPECIALS LATCH VALUE",17,+2.7000000000000E+01
cc "SPECIALS LATCH VALUE"
ky 20622
5. Press Execute.

11
Remove the Outer and Inner Signal Generator Covers
Remove the Outer Cover
Refer to Figure 3.
1. Disconnect the power cord.
2. Using a T-20 driver, loosen the two screws (1) and remove the strap handle (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 lifting the tab and sliding the foot toward the tab.
5. Place the signal generator on its side.
6. Tilt the signal generator forward and slide the outer cover (6) back to remove it from the frame.
Remove the Inner Top Cover
Refer to Figure 4.
1. Using a T-10 driver, remove the screws (1) from the inner-top cover (2). There are twelve screws for E8257D and
eleven screws for E8267D.
2. Remove the inner-top cover.

12
Figure 3 Outer Cover Removal

13
Figure 4 Inner Top Cover Removal

14
Remove the A32 10 MHz Crystal Oscillator (For instruments with Option UNR) (For
Instruments with Serial Prefixes <US4805/MY4805)
Refer to Figure 5 for this procedure.
1. Position the signal generator with the rear panel facing you.
2. Using the needle-nose pliers, disconnect the W47 flexible cable (A31 Motherboard J1041) from A32J2.
3. Using the needle-nose pliers, disconnect the W48 flexible cable (10 MHz EFC) from A32J1.
4. Disconnect the A32W1 bias cable from the A21 Rear Panel Interface P2.
5. Using the T-10 driver, remove the three screws (3) that attach the A32 10 MHz Crystal Oscillator to the rear panel.
6. Remove the A32 10 MHz Crystal Oscillator.
Install the A32 10 MHz Crystal Oscillator
NOTE W47 may be shipped disconnected from the A32 10 MHz Crystal Oscillator. If it is disconnected, connect
one end of the cable to A32J2 before you start the installation procedure.
Refer to Figure 5.
1. Position the signal generator with the rear panel facing you.
2. For E8257D (all) and E8267D instruments with serial prefix <US4824/MY4824; use the T-10 driver to attach the
bracket adapter (1) to the A32 housing frame using the two 4mm screws (2).
3. Using a T-10 driver, install the three screws (3) to secure the A32 10 MHz Crystal Oscillator to the rear panel.
4. Connect the A32W1 bias cable to the A21 Rear Panel Interface Board, A21P2.
5. Using the needle-nose pliers, connect the W48 flexible cable from 10 MHz EFC (rear panel connector) to A32J1.
6. Using the needle-nose pliers, connect the W47 flexible cable to J1041 of the A31 Motherboard.

15
Figure 5 A32 10 MHz Crystal Oscillator
A32 A21P2 A47A32W1 A48
3
2
1
a.Used only on E8267D with serial prefix <US4824/MY4824 and all E8257D.
a.

16
For Instruments with Motherboard Versions Less than A0101, replace A31L400 (E8257D) or
A31L44 (E8267D) (For Instruments with Serial Prefixes <US4805/MY4805)
Refer to Figure 6.
1. Position the signal generator with the A31 Motherboard facing you.
2. Remove A31L400 (E8257D) or A31L44 (E8267D).
3. Install the new inductor, provided in this kit.
NOTE There is a spare replacement inductor provided in this kit.
Figure 6 A31L400 and A31L44
E8257D- L400
E8267D- L44
Front Panel

17
Install W122 Cable and 50 ohm Termination
Refer to Figure 7.
1. Position the signal generator with the front panel facing you.
2. Lift the retention levers and disconnect the A5 Sampler, A6 Frac-N, A7 Reference, and A8 Output boards from the A31
Motherboard.
3. Lift the boards out of the slots.
4. Position the signal generator with the A31 Motherboard facing away from you and the RF deck on top.
5. Using your hand or a pair of pliers, remove the W39 cable retainer tab.
6. Slightly pull W39 away from the A31 Motherboard.
7. Install W122 (E8251-20384, provided in this kit). Slide it under W46 and W39 and insert it into the 1GHz Ref Out.
8. Reattach W39 to the A31 Motherboard.
9. Using the cable ties provided in this kit, tie W122 to W46 and W39.
10. Position the signal generator with the front panel facing you.
11. Re-install the A5 Sampler, A6 Frac-N, and A8 Output boards.

18
Figure 7 W122 Installation
W39
W46 W122
1GHz Ref Out
50 Ohm termination

19
Connect W135 to W122 (For Instruments with Serial Prefixes >US4805/MY4805)
Refer to Figure 7 and Figure 8.
1. Position the signal generator with rear panel facing you.
2. Remove the zip tie from the 1 GHz out cable (W135) on the rear panel, refer to Figure 8.
3. Position the signal generator with the A31 Motherboard on top.
4. Remove the 50 Ohm terminator from W122.
5. Connect the W135 to W122.
Figure 8 W135

20
Install the New A7 Reference Board (For Instruments with Serial Prefixes <US4805/MY4805)
Refer to Figure 9.
1. Position the signal generator with the front panel facing you.
2. Install the new A7 Reference board into the empty slot.
Figure 9 A7 Reference
A7