Keysight 85309B User's And Service Manual
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Keysight 85309B User's And Service Manual

Keysight 85309B User's And Service Manual

Lo/if distribution unit
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Keysight 85309B LO/IF
Distribution Unit
Use this manual with the Keysight
Antenna Selection Guide,
part number 5968-6759E.
This is the User's and Service Guide for the 8539B LO/IF Distribution Unit.
USER'S AND SERVICE GUIDE
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  • Page 1 Keysight 85309B LO/IF Distribution Unit Use this manual with the Keysight Antenna Selection Guide, part number 5968-6759E. This is the User's and Service Guide for the 8539B LO/IF Distribution Unit. USER'S AND SERVICE GUIDE...
  • Page 2 PERFORMANCE OF THIS to the public to use, modify, DOCUMENT OR ANY INFORMATION reproduce, release, perform, CONTAINED HEREIN. SHOULD display, or disclose commercial KEYSIGHT AND THE USER HAVE A computer software or SEPARATE WRITTEN AGREEMENT commercial computer software WITH WARRANTY TERMS...

  • Page 5: Table Of Contents

    Configuration Examples ..........2-6 Step 4. (Option 40x Only): Set the 85309B Band Selection ......2-9 Step 5: Power On the 85309B .
  • Page 6 85309B Characteristic Performance ........

  • Page 7: Getting Started

    Keysight web site: — Go to http://www.keysight.com. — Enter the product model number (Ex: 85309B) in the Search function. — Click Search. — Click the Manuals hyperlink. — Click the hyperlink title for the document you want to print - this downloads the PDF —...

  • Page 8: 85309B Overview

    LO drive power through RF cables to the mixers in the antenna test configuration. The high output power allows the mixers to be located more than seven meters from the 85309B. There are also IF amplifiers located in the 85309B, which serve as a preamplifier for the receiver, reducing the overall system noise figure significantly.

  • Page 9: Step 1. Check The Shipment

    1. Unpack the contents of the shipping container. Keep the packaging material in case the analyzer needs to be returned to the factory. 2. Carefully inspect the 85309B to make sure that it was not damaged during shipment. If damaged, refer to “Contacting Keysight”...
  • Page 10 Always use the three-prong AC power cord supplied with this product. Failure to ensure adequate earth grounding may cause product damage. 4. Plug the unit into an appropriate AC power source. Keysight 85309B User’s and Service Guide...

  • Page 11: Step 3. Connect The 85309B With Other System Components

    To learn about the various system configurations, refer to the Keysight Antenna Test Selection Guide, part number 5968-6759E. See “Printing Copies of Documentation from the Web” in the first section of this manual. The 85309B should be turned off when connecting it with other system components. Compatible Network Analyzers The following network analyzers are compatible with the 85309B.

  • Page 12: Configuration Examples

    Getting Started Step 3. Connect the 85309B with Other System Components Configuration Examples Figure 1-1 Simplified Configuration Block Diagram Keysight 85309B User’s and Service Guide...
  • Page 13 Getting Started Step 3. Connect the 85309B with Other System Components Figure 1-2 Typical Far-Field Configuration Keysight 85309B User’s and Service Guide...
  • Page 14 Getting Started Step 3. Connect the 85309B with Other System Components Figure 1-3 Typical PNA-X Compact Range Configuration Keysight 85309B User’s and Service Guide...

  • Page 15: Step 4. (Option 40X Only): Set The 85309B Band Selection

    Step 5: Power On the 85309B Power on the 85309B by pressing the front panel On/Off switch. If the 85309B will not power on, make sure the instrument is plugged into an operating AC power outlet, and check the fuse.

  • Page 16: Step 6. Adjust The Lo Power

    Step 6. Adjust the LO Power Step 6. Adjust the LO Power The procedure below is applicable to all 85309B models, and assumes the user has basic knowledge on the antenna test system. To learn about the various antenna test systems, refer to the Keysight Antenna Test Selection Guide, part number 5968-6759E.

  • Page 17: Step 7. (Optional) Run The 85309B Operator's Check

    STEP 7. (Optional) Run the 85309B Operator’s Check STEP 7. (Optional) Run the 85309B Operator’s Check The operator’s check should be performed when you first receive your 85309B, and any time you wish to have confidence that it is working properly. The operator’s check does not verify performance to specifications, but should give...

  • Page 18: Getting Help With Your 85309B

    Keysight office are available on the Web at https://www.keysight.com/us/en/products/services/repair-services/worldwi de-service-locations.html. If you do not have access to the Internet, please contact your Keysight field engineer. In any correspondence or telephone conversation, refer to the Keysight product by its model number and full serial number. With this information, the Keysight representative can determine whether your product is still within its warranty period.

  • Page 19: Operating Information

    Electrostatic Discharge Protection Protection against electrostatic discharge (ESD) is essential while removing assemblies from or connecting cables to the 85309B. Static electricity can build up on your body and can easily damage sensitive internal circuit elements when discharged. Static discharges too small to be felt can cause permanent damage.
  • Page 20 Operating Information Electrostatic Discharge Protection Figure 2-1 ESD Protection Setup Keysight 85309B User’s and Service Guide...

  • Page 21: 85309B Front Panel Features

    DETECTOR VOLTAGE Display The reference mixer has a detector that measures the amount of LO power coming into its LO input. This voltage is sent to the 85309B where it is displayed in the DETECTOR VOLTAGE display. The voltage is directly proportional to the amount of LO power.

  • Page 22: Lo Power Out Of Range

    6. Adjust the LO Power” on page 10 for instructions. — The LO source's RF OUTPUT is not connected to the 85309B, or the LO source is turned off. This can also happen if the LO source is on, but its RF output is turned off.
  • Page 23 HIGH/LOW BAND SELECT port. TTL high (+5 V) selects HIGH band; TTL low (0 V) selects LOW band. Use Keysight 85320A/B Option H20 external mixer modules to utilize the 0.1 GHz to 3 GHz frequency range of operation. If the green LED above the Band Selection knob is lit, the HIGH band is selected.

  • Page 24: 85309B Rear Panel Features

    85309B Option 402 rear panel features, including two additional test channels and an active J15 “High/Low Band Select” port. The rear panel on your 85309B model may not include all of the ports shown. Note that the connectors are arranged in the following groups: —...

  • Page 25: Test Mixers Connector Group

    85309B Rear Panel Features J4 REFERENCE IF IN. This port receives the IF from the reference mixer. The 85309B amplifies this signal and sends it to the receiver using the J10 REFERENCE IF OUT connector. J5 REFERENCE DET IN. A power detector in the reference mixer measures incoming LO power and outputs a proportional voltage.

  • Page 26: Receiver Connector Group

    HIGH/LOW BAND SELECT feature when the front panel BAND SELECTION knob is in the EXT position. See “BAND SELECTION (Option 40x Only)” on page 4. TTL high (+5 V) selects HIGH band; TTL low (0 V) selects LOW band. Keysight 85309B User’s and Service Guide...

  • Page 27: Available Fuses

    — Fuse (5 A/250V, 2110-0709) U.L. listed and CSA certified For continued protection against fire hazard replace line fuse only with same type and rating: Fuse 5A/250V, Part Number 2110-0709. The use of other fuses or material is prohibited. Figure 2-5 Line Fuse Keysight 85309B User’s and Service Guide...

  • Page 28: 85309B Block Diagrams

    Operating Information 85309B Block Diagrams 85309B Block Diagrams Block diagrams are located on the following two pages. 2-10 Keysight 85309B User’s and Service Guide...
  • Page 29 85309B Block Diagram Rev 10 Standard/Opt 001/Opt 002 REF CHAN REF CHAN IF INPUT IF OUT 85309-80026 0955-0791 Diplexer 5076-6336 REF CHAN LO OUT 5087-7755 LOAD Diplexer 5076-6336 TEST 1 LO / IF 5087-7755 DIPLEXER IF OUT TEST IF IN...
  • Page 30 85309B Block Diagram Rev 10 Option 400/401/402 REF CHAN REF CHAN IF INPUT IF OUT 0955-0791 85309-80026 0955-2249 Diplexer 5076-6336 REF CHAN LO OUT 33311-60069 0955-2249 5087-7755 OPT 402 LOAD OPT 401 LOAD Diplexer AT13 0955-2249 5076-6336 TEST 1 LOAD...

  • Page 31: Cable Length Limits

    Cable Length Limits The following figure defines the allowable maximum cable lengths from the LO Source to the 85309B, and the cable connecting the 85309B and the external mixers. The cable lengths are provided when using standard RF cable assemblies and with MicroCoax (UFB311A RF) low-loss cable assemblies.
  • Page 32 Operating Information Cable Length Limits Figure 2-6 Cable Length Configurations (1 of 2) 2-14 Keysight 85309B User’s and Service Guide...
  • Page 33 Operating Information Cable Length Limits Figure 2-7 Cable Length configurations (2 of 2) Keysight 85309B User’s and Service Guide 2-15...

  • Page 34: Performing The Operator's Check

    (reference and test) across the entire frequency range of operation. It also checks the Reference IF and Test IF channels. Passing the Operator’s Check indicates that all 85309B internal cables have stable connections and that the amplifiers are working properly.

  • Page 35: Equipment Required

    Frequency and enter 0.1 GHz, then select Stop Frequency and enter 18 GHz. 3. To activate the PNA receiver B, select Response > Meas > More > Receivers. 4. Set the Port 1 source power level to 0 dBm. Keysight 85309B User’s and Service Guide 2-17...
  • Page 36 15.Remove the thru adapter between the two test cables. Checking the 85309B Test 1 LO/IF (J3) Channel 16.Connect a test cable between the PNA Port 1 and the 85309B rear panel port LO Input (J1). 17.Connect a test cable between the PNA Port 2 and the 85309B rear panel port Test 1 LO/IF (J3).
  • Page 37 19, as appropriate. Checking the 85309B Reference LO Out (J2) Channel 22.Connect a test cable between the PNA Port 1 and the 85309B rear panel port LO Input (J1). 23.Connect a test cable between the PNA Port 2 and the 85309B rear panel port Reference LO OUT (J2).
  • Page 38 For Option 002 and 402 Models Only: Checking the 85309B Test 3 LO/IF (J13) Channel 36.Connect a test cable between the PNA Port 1 and the 85309B rear panel port LO Input (J1). 37.Connect a test cable between the PNA Port 2 and the 85309B rear panel port Test 3 LO/IF (J13).
  • Page 39 Operating Information Performing the Operator’s Check Table 2-3 85309B Standard or Options 001 or 002 Output Power Limits LO Output Power (+6 dBm Input) 0.3 – 0.5 GHz > +21.6 dBm 0.5 – 3 GHz > +23 dBm 3 – 6.2 GHz >...

  • Page 40: Reference If And Test If

    Operating Information Performing the Operator’s Check Table 2-4 85309B Options 40x Output Power Limits for HIGH Band LO Output Power (+6 dBm Input) Frequency Range Power Level 0.3 – 0.5 GHz > +21.3 dBm 0.5 – 3 GHz > +22.4 dBm 3 –...
  • Page 41 8. Remove the thru adapter between the two test cables. Checking the J10 Reference IF Out 9. Connect the test cable on PNA Port 1 to the 85309B rear panel port Reference IF In (J4). 10.Connect the test cable on PNA Port 2 to the 85309B rear panel port Reference IF Out (J10).
  • Page 42 Typical Test IF Response Trace For Option 00x and 40x Models Only: Checking the J12 Test 2 IF Out 1. Connect a test cable between the PNA Port 1 and the 85309B rear panel port Test 2 LO/IF (J11). 2. Connect a test cable between the PNA Port 2 and the 85309B rear panel port Test 2 IF Out (J12).

  • Page 43: If The Operator's Check Fails

    Performing the Operator’s Check For Option 002 and 402 Models Only: Checking the J14 Test 3 IF Out 1. Connect a test cable between the PNA Port 1 and the 85309B rear panel port Test 3 LO/IF (J13). 2. Connect a test cable between the PNA Port 2 and the 85309B rear panel port Test 3 IF Out (J14).
  • Page 44 Operating Information Performing the Operator’s Check 2-26 Keysight 85309B User’s and Service Guide...

  • Page 45: General Information

    Keysight 85309B LO/IF Distribution Unit User’s and Service Guide General Information General Specifications Environmental: Operating Temperature Range 0 to 50 °C; for indoor use ONLY Storage Temperature Range –40 to 70 °C Operating Altitude 3000 m (9842 ft.) Complies with the essential requirements of the European EMC...
  • Page 46 4 °C for every 100 watts dissipated in the cabinet. If the total power dissipated in the cabinet is greater than 800 watts, forced convection must be used. Keysight 85309B User’s and Service Guide...

  • Page 47: 85309B Characteristic Performance

    ±2 dB 0.1 GHz to 1.0 GHz 0.3 GHz to 18 GHz ±2 dB Port Return Loss, 0.1 GHz to 18 GHz (typical) LO Input 9 dB LO Output 7 dB 1. Options 40x only. Keysight 85309B User’s and Service Guide...
  • Page 48 General Information 85309B Characteristic Performance Parameter Minimum Maximum IF Channel Small Signal Gain 20 MHz 21 dB 25 dB Keysight 85309B User’s and Service Guide...

  • Page 49: General Safety Considerations

    Cleaning the Instrument To prevent electrical shock, disconnect the Keysight Technologies 85309B from the mains before cleaning. Use a dry cloth or one slightly dampened with water to clean the external case parts. Do not attempt to clean internally.

  • Page 50: Statement Of Compliance

    To avoid electrical shock, do not perform any servicing unless you are qualified to do so. The opening of covers or removal of parts is likely to expose dangerous voltages. Disconnect the instrument from all voltage sources while it is being opened. Keysight 85309B User’s and Service Guide...
  • Page 51 Cleaning connectors with alcohol shall only be done with the instruments power cord removed, and in a well-ventilated area. Allow all residual alcohol moisture to evaporate and the fumes to dissipate prior to energizing the instrument. Keysight 85309B User’s and Service Guide...

  • Page 52: Regulatory Information

    (reference CISPR 11, Clause 5). This is a marking to indicate product compliance with the Canadian Interference-Causing ICES/NMB-001 Equipment Standard (ICES-001). The RCM mark is a registered trademark of the Australian Communications and Media Authority. Keysight 85309B User’s and Service Guide...
  • Page 53 South Korean Certification (KC) mark; includes the marking's identifier code which follows the format: MSIP-REM-YYY-ZZZZZZZZZZZZZZ or KCC-REM-YYY-ZZZZZZZZZZZZ. This symbol on all primary or secondary packaging indicates compliance to China standard GB 18455-2001. IP 20 Degree of protection. Keysight 85309B User’s and Service Guide...
  • Page 54 General Information Regulatory Information 3-10 Keysight 85309B User’s and Service Guide...

  • Page 55: Service

    User’s and Service Guide Service Replaceable Parts Introduction This section contains information for ordering replaceable parts for the 85309B LO/IF Distribution Unit. The replaceable parts include major assemblies and cables. Ordering Information To order a part listed in the replaceable parts lists: —...

  • Page 56: Replaceable Parts Listings

    * If any 5067-4814 diplexer is replaced with the 5076-6336 diplexer, you must replace ALL of the other 5067-4814 diplexers as well. You also need to replace the W8 cable 85309-60111 with the 85309-60112 cable. Keysight 85309B User’s and Service Guide...
  • Page 57 Service Replaceable Parts Figure 4-1 Major 85309B Assemblies (Standard) Keysight 85309B User’s and Service Guide...
  • Page 58 A43 IN - RPJ7 85309-20169 Rear Panel Jumper, RPJ7 - RPJ8 *If your current A16 diplexer is 5067-4814, use cable part number 85309-60111. If your current A16 diplexer is 5076-6336, use cable part number 85309-60112. Keysight 85309B User’s and Service Guide...
  • Page 59 Service Replaceable Parts Figure 4-2 Cable Locations (Standard) Keysight 85309B User’s and Service Guide...
  • Page 60 * If any 5067-4814 diplexer is replaced with the 5076-6336 diplexer, you must replace ALL of the other 5067-4814 diplexers as well. You also need to replace the W8 cable 85309-60111 with the 85309-60112 cable. Keysight 85309B User’s and Service Guide...
  • Page 61 Service Replaceable Parts Figure 4-3 Major 85309B Assemblies (Option 001) Keysight 85309B User’s and Service Guide...
  • Page 62 A43 IN - RPJ7 85309-20169 Rear Panel Jumper, RPJ7 - RPJ8 *If your current A16 diplexer is 5067-4814, use cable part number 85309-60111. If your current A16 diplexer is 5076-6336, use cable part number 85309-60112. Keysight 85309B User’s and Service Guide...
  • Page 63 Service Replaceable Parts Figure 4-4 Cable Locations (Option 001) Keysight 85309B User’s and Service Guide...
  • Page 64 * If any 5067-4814 diplexer is replaced with the 5076-6336 diplexer, you must replace ALL of the other 5067-4814 diplexers as well. You also need to replace the W8 cable 85309-60111 with the 85309-60112 cable. 4-10 Keysight 85309B User’s and Service Guide...
  • Page 65 Service Replaceable Parts Figure 4-5 Major 85309B Assemblies (Option 002) Keysight 85309B User’s and Service Guide 4-11...
  • Page 66 A28- A45 IN 85309-60109 A29 OUT- RPJ14 8120-5020 A2J12 - A17 8120-5067 A43 IN - RPJ7 85309-20169 Rear Panel Jumper, RPJ7 - RPJ8 *If your current A16 diplexer is 5067-4814, use cable part number 85309-60111. 4-12 Keysight 85309B User’s and Service Guide...
  • Page 67 Service Replaceable Parts If your current A16 diplexer is 5076-6336, use cable part number 85309-60112. Keysight 85309B User’s and Service Guide 4-13...
  • Page 68 Service Replaceable Parts Figure 4-6 Cable Locations (Option 002) 4-14 Keysight 85309B User’s and Service Guide...
  • Page 69 * If any 5067-4814 diplexer is replaced with the 5076-6336 diplexer, you must replace ALL of the other 5067-4814 diplexers as well. You also need to replace the W8 cable 85309-60111 with the 85309-60112 cable. Keysight 85309B User’s and Service Guide 4-15...
  • Page 70 Service Replaceable Parts Figure 4-7 Major 85309B Assemblies (Option 400) 4-16 Keysight 85309B User’s and Service Guide...
  • Page 71 SW5 (C) - A16 IN 8120-5020 A2J12 - A17 8120-5067 A43 IN - RPJ7 85309-20169 Rear Panel Jumper, RPJ7 - RPJ8 *If your current A16 diplexer is 5067-4814, use cable part number 85309-60111. Keysight 85309B User’s and Service Guide 4-17...
  • Page 72 Service Replaceable Parts If your current A16 diplexer is 5076-6336, use cable part number 85309-60112. 4-18 Keysight 85309B User’s and Service Guide...
  • Page 73 Service Replaceable Parts Figure 4-8 Cable Locations (Option 400) Keysight 85309B User’s and Service Guide 4-19...
  • Page 74 Microwave attenuator, 6 GHz MAX 1W 1dB SMA (Test2 Chan) 0955-2530 Microwave attenuator, 6 GHz MAX 1W 1dB SMA (Test1 Chan) AT10 0955-1503 Microwave attenuator, 18 GHz MAX 2W SMA 54574-68501 Fan assembly 85309-61607 Switch, SPDT 85309-61609 Switch, SP3T, rotary 4-20 Keysight 85309B User’s and Service Guide...
  • Page 75 *If any 5067-4814 diplexer is replaced with the 5076-6336 diplexer, you must replace ALL of the other 5067-4814 diplexers as well. You also need to replace the W8 cable 85309-60111 with the 85309-60112 cable. Keysight 85309B User’s and Service Guide 4-21...
  • Page 76 Service Replaceable Parts Figure 4-9 Major 85309B Assemblies (Option 401) 4-22 Keysight 85309B User’s and Service Guide...
  • Page 77 85309-20167 SW5 (C) - A16 IN 85309-20159 AT8 - A32 OUT 85309-20164 SW6 (C) - A25 IN 8120-5020 A2J12 - A17 8120-5067 A43 IN - RPJ7 85309-20169 Rear Panel Jumper, RPJ7 - RPJ8 Keysight 85309B User’s and Service Guide 4-23...
  • Page 78 Service Replaceable Parts *If your current A16 diplexer is 5067-4814, use cable part number 85309-60111. If your current A16 diplexer is 5076-6336, use cable part number 85309-60112. 4-24 Keysight 85309B User’s and Service Guide...
  • Page 79 Service Replaceable Parts Figure 4-10 Cable Locations (Option 401) Keysight 85309B User’s and Service Guide 4-25...
  • Page 80 0955-2530 Microwave attenuator, 6 GHz MAX 1W 1dB SMA (Ref Chan) 0955-2530 Microwave attenuator, 6 GHz MAX 1W 1dB SMA (Test2 Chan) 0955-2530 Microwave attenuator, 6 GHz MAX 1W 1dB SMA (Test1 Chan) 4-26 Keysight 85309B User’s and Service Guide...
  • Page 81 * If any 5067-4814 diplexer is replaced with the 5076-6336 diplexer, you must replace ALL of the other 5067-4814 diplexers as well. You also need to replace the W8 cable 85309-60111 with the 85309-60112 cable. Keysight 85309B User’s and Service Guide 4-27...
  • Page 82 Service Replaceable Parts Figure 4-11 Major 85309B Assemblies (Option 402) 4-28 Keysight 85309B User’s and Service Guide...
  • Page 83 85309-20164 SW6 (C) - A25 IN 85309-20158 A11 - A32 OUT 85309-20157 SW7 (C) - A28 IN 8120-5020 A2J12 - A17 8120-5067 A43 IN - RPJ7 85309-20169 Rear Panel Jumper, RPJ7 - RPJ8 Keysight 85309B User’s and Service Guide 4-29...
  • Page 84 Service Replaceable Parts *If your current A16 diplexer is 5067-4814, use cable part number 85309-60111. If your current A16 diplexer is 5076-6336, use cable part number 85309-60112. 4-30 Keysight 85309B User’s and Service Guide...
  • Page 85 Service Replaceable Parts Figure 4-12 Cable Locations (Option 402) Keysight 85309B User’s and Service Guide 4-31...
  • Page 86 Service Replaceable Parts 4-32 Keysight 85309B User’s and Service Guide...
  • Page 87 Installation Note Xxxxx-xxxxx...
  • Page 88 This information is subject to change without notice. © Keysight Technologies 2008-2023 October 2023 www.keysight.com...

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