Agilent Technologies 85309B LO Manual
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Agilent Technologies 85309B LO Manual

Agilent Technologies 85309B LO Manual

Lo/if distribution unit
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Agilent 
85309B
LO/IF 
Distribution Unit
User's and Service Guide
Use this manual with the Agilent Antenna Selection
Guide, part number 5968-6759E.
Agilent Technologies

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  • Page 1 Agilent  85309B LO/IF  Distribution Unit User’s and Service Guide Use this manual with the Agilent Antenna Selection Guide, part number 5968-6759E. Agilent Technologies...
  • Page 2 Should Agilent and the user have a separate written agreement with warranty WA RN ING terms covering the material in this document that conflict with these...
  • Page 3 85309B Overview The 85309B LO/IF Distribution Unit is a broadband, distributed frequency converter that utilizes fundamental mixing to provide the performance for antenna test systems. The 85309B, together with mixers in the antenna test configuration (not supplied), down convert a microwave signal to an IF signal.
  • Page 4 85309B, which serve as a preamplifier for the receiver, reducing the overall system noise figure significantly. The 85309B LO/IF Distribution Unit can be installed in a variety of configurations for antenna testing. To learn about the various system configurations, refer to the “Configuration Examples” section in Chapter 1 of this document, and the online document Agilent Antenna Test Selection Guide, part number 5968-6759E.
  • Page 5 Option 1CP - Rack Mount Kit With Handles Rack mount kit with handles. To obtain this item after receiving the 85309B, order part number 5063-9221. Service Guide 85309-90082...
  • Page 6 Service Guide 85309-90082...

  • Page 7: Table Of Contents

    Shipping Your Instrument to Agilent for Service or Repair ....... .
  • Page 8 Contents Declaration of Conformity............... 1-4 Statement of Compliance .

  • Page 9: Getting Started

    Getting Started Service Guide 85309-90082...

  • Page 10: Step 1. Check The Shipment

    2. Carefully inspect the 85309B to make sure that it was not damaged during shipment. If damaged, refer to “Contacting Agilent” on page 1-12. 3. Use the Contents List in the shipping container to verify the completeness of your shipment. If not complete, refer to “Contacting Agilent”...

  • Page 11: Step 2. Meet Electrical And Environmental Requirements

    LO/IF Distribution Unit Getting Started 85309B STEP 2. Meet Electrical and Environmental Requirements STEP 2. Meet Electrical and Environmental Requirements CAUTION This instrument has autoranging line voltage input. Be sure the supply voltage is within the specified range. 1. Ensure the available AC power source meets the requirements found in “General Specifications”...

  • Page 12: Step 3. Connect The 85309B With Other System Components

    To learn about the various system configurations, refer to the Agilent Antenna Test Selection Guide, part number 5968-6759E. See “Printing Copies of Documentation from the Web” in the first section of this manual.

  • Page 13: Configuration Examples

    LO/IF Distribution Unit Getting Started 85309B Step 3. Connect the 85309B with Other System Components Configuration Examples Figure 1-1 Simplified Configuration Block Diagram Service Guide 85309-90082...
  • Page 14 Getting Started LO/IF Distribution Unit Step 3. Connect the 85309B with Other System Components 85309B Figure 1-2 Typical Far-Field Configuration Service Guide 85309-90082...
  • Page 15 LO/IF Distribution Unit Getting Started 85309B Step 3. Connect the 85309B with Other System Components Figure 1-3 Typical PNA-X Compact Range Configuration Service Guide 85309-90082...

  • Page 16: Step 4. (Option 40X Only): Set The 85309B Band Selection

    Getting Started LO/IF Distribution Unit Step 4. (Option 40x Only): Set the 85309B Band Selection 85309B Step 4. (Option 40x Only): Set the 85309B Band Selection The Band Selection knob on the front panel of the 85309B Option 400/401/402 models allows the user to switch between the low band, high band, and external selections.

  • Page 17: Step 5: Power On The 85309B

    LO/IF Distribution Unit Getting Started 85309B Step 5: Power On the 85309B 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 18: 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 Agilent Antenna Test Selection Guide, part number 5968-6759E. See “Printing Copies of Documentation from the Web” in the first section of this manual.

  • Page 19: Step 7. (Optional) Run The 85309B Operator's Check

    LO/IF Distribution Unit Getting Started 85309B 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.

  • Page 20: Getting Help With Your 85309B

    For information on how to view and print this document online, see “Printing Copies of Documentation from the Web” in the first section of this manual. Contacting Agilent Assistance with test and measurements needs and information or finding a local Agilent office are available on the Web at: http://www.agilent.com/find/assist If you do not have access to the Internet, please contact your Agilent field engineer.

  • Page 21: Operating Information

    Operating Information Service Guide 85309-90082...

  • Page 22: Electrostatic Discharge Protection

    Operating Information LO/IF Distribution Unit Electrostatic Discharge Protection 85309B 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.

  • Page 23: 85309B Front Panel Features

    LO/IF Distribution Unit Operating Information 85309B 85309B Front Panel Features 85309B Front Panel Features Figure 2-2 85309B Standard/Option 001/002 Front Panel Figure 2-3 85309B Option 400/401/402 Front Panel 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.

  • Page 24: Lo Power Out Of Range

    (+5 V) selects HIGH band; TTL low (0 V) selects LOW band. NOTE Use Agilent 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. If the LED is not lit, the LOW band is selected.

  • Page 25: 85309B Rear Panel Features

    LO/IF Distribution Unit Operating Information 85309B 85309B Rear Panel Features 85309B Rear Panel Features CAUTION The 85309B contains static sensitive devices. Never touch the center conductor of any connector. When cleaning connectors, wear a grounded wrist strap. Figure 2-4 shows 85309B Option 402 rear panel features, including two additional test channels and an active J15 “High/Low Band Select”...

  • Page 26: Test Mixers Connector Group

    Operating Information LO/IF Distribution Unit 85309B Rear Panel Features 85309B power. The allowable input voltage range for this connector is 0 to -200 mV. Test Mixers Connector Group The three connectors in this group, J3 TEST 1 LO/IF (standard), J11 TEST 2 LO/IF (option 001 or 401), and J13 TEST 3 LO/IF (option 002 or 402), are connected to the test mixers.

  • Page 27: Available Fuses

    LO/IF Distribution Unit Operating Information 85309B 85309B Rear Panel Features J7 and J8 (Using Non-Diplexed Mixers). J7 and J8 allow you to use a non-diplexed test mixer (a mixer that has separate connections for the LO and IF signal). This is done by removing the Type-N jumper that normally connects J7 and J8.

  • Page 28: 85309B Block Diagrams

    Operating Information LO/IF Distribution Unit 85309B Block Diagrams 85309B 85309B Block Diagrams Block diagrams are located on the following two pages. Service Guide 85309-90082...
  • Page 29 AT15 A27-J1 A24-J1 A12-J1 A13-J1...
  • Page 30 AT15 A27-J1 A24-J1 A12-J1 A13-J1...

  • Page 31: Cable Length Limits

    RF cable assemblies and with MicroCoax (UFB311A RF) low-loss cable assemblies. The standard mixers used in Agilent antenna measurement systems are the 85320A test mixer and the 85320B reference mixer. Both mixers operate from 2 to 18 GHz in fundamental mode, and from 6 to 26.5 GHz in third-harmonic mode.
  • Page 32 Operating Information LO/IF Distribution Unit Cable Length Limits 85309B Figure 2-6 Cable Length Configurations (1 of 2) 2-12 Service Guide 85309-90082...
  • Page 33 LO/IF Distribution Unit Operating Information 85309B Cable Length Limits Figure 2-7 Cable Length configurations (2 of 2) Service Guide 85309-90082 2-13...

  • Page 34: Performing The Operator's Check

    Operating Information LO/IF Distribution Unit Performing the Operator’s Check 85309B Performing the Operator’s Check Function The Operator’s Check verifies that the 85309B functions properly before permanent installation in the antenna test system. It may also be used as a stand-alone check anytime that a problem is suspected with the 85309B.

  • Page 35: Lo Power Output Test

    LO/IF Distribution Unit Operating Information 85309B Performing the Operator’s Check LO Power Output Test NOTE The PNA input must be attenuated to avoid causing receiver compression or damaging the receiver. An external 30 dB pad attenuator is required if the PNA does not have an internal source step attenuator.
  • Page 36 Operating Information LO/IF Distribution Unit Performing the Operator’s Check 85309B 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). 18.
  • Page 37 LO/IF Distribution Unit Operating Information 85309B Performing the Operator’s Check power traces with the limits across the entire frequency range in Table 2-5 on page 2-18. 34. Set the PNA Port 1 source power to 6 dBm. 35. Repeat Step 32 Step 33, as appropriate.

  • Page 38: Reference If And Test If

    Operating Information LO/IF Distribution Unit Performing the Operator’s Check 85309B 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 >...
  • Page 39 LO/IF Distribution Unit Operating Information 85309B Performing the Operator’s Check 6. Connect a thru adapter between the two test cables. 7. Normalize the PNA trace. If necessary, get instructions by searching the embedded Help System of the PNA for “normalize.” After normalizing, the trace should be flat at 0 dBm 8.

  • Page 40: If The Operator's Check Fails

    1. Clean the cables and adapters and repeat the Operator’s Check. 2. If the Operator’s Check still fails, possibly the amplifiers are biased incorrectly or there is a faulty component. See “Contacting Agilent” on page 1-12. 2-20 Service Guide 85309-90082...

  • Page 41: General Information

    General Information Service Guide 85309-90082...

  • Page 42: General Specifications

    General Information LO/IF Distribution Unit General Specifications 85309B General Specifications Environmental: ° 0 to 50 Operating Temperature Range ° –40 to 70 Storage Temperature Range Operating Altitude 3000 m (9842 ft.) * Certified to IEC61326-1: 2005 / EN61326-1:2006 * Canada: ICES/NMB-001:Issue 4, June 2006 * Australia/New Zealand: AS/NZS CISPR 11:2004 Safety Compliance * IEC/EN 61010-1:2010 (3rd edition)

  • Page 43: 85309B Characteristic Performance

    LO/IF Distribution Unit General Information 85309B 85309B Characteristic Performance 85309B Characteristic Performance Parameter Value Absolute Maximum Rating LO input port (CW) 20 dBm Reference channel IF input port (CW) 13 dBm Reference channel detector input ±20 VDC Positive Z/blanking input ±10 VDC (Option 40x only) Select HIGH/LOW input ±5.5 VDC...

  • Page 44: General Safety Considerations

    In case of spill, soak up the sand or earth. Flush spill area with water. Dispose of isopropyl alcohol in accordance with all applicable federal, state, and local environmental regulations. Declaration of Conformity A declaration of conformity is available upon request, or a copy is available on the Agilent Technologies Web site at http://regulations.corporate.agilent.com/DoC/search.htm or by contacting Agilent - see “Contacting Agilent”...

  • Page 45: Statement Of Compliance

    LO/IF Distribution Unit General Information 85309B General Safety Considerations Statement of Compliance This instrument has been designed and tested in accordance with IEC Publication 61010, Safety Requirements for Electronic Measuring Apparatus, and has been supplied in a safe condition. The instruction documentation contains information and warnings which must be followed by the user to ensure safe operation and to maintain the instrument in a safe condition.
  • Page 46 General Information LO/IF Distribution Unit General Safety Considerations 85309B Servicing Warnings applicable to this instrument WARNING For continued protection against fire hazard replace line fuse only with same type and rating: Fuse 5A/250V, Part Number 2110-0680 The use of other fuses or material is prohibited. WARNING Always use the three-prong AC power cord supplied with this instrument with adequate electric rating.

  • Page 47: Regulatory Information

    LO/IF Distribution Unit General Information 85309B Regulatory Information Regulatory Information This section contains information that is required by various government regulatory agencies. Instrument Markings Familiarize yourself with these instrument markings and their meanings before operating the instrument. The instruction documentation symbol. The product is marked with this symbol when it is necessary for the user to refer to the instructions in the documentation.
  • Page 48 General Information LO/IF Distribution Unit Regulatory Information 85309B This Korean Certification (KC) symbol is required for products that are subject to legally compulsory certification. The KC symbol includes the marking’s identifier code that has up to 26 digits and follows this format: KCC-REM-ATi-WNACCYFO1.
  • Page 49 Service Service Guide 85309-90082...

  • Page 50: Service Replaceable Parts

    Replaceable Parts 85309B 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 51 LO/IF Distribution Unit Service 85309B Replaceable Parts This page is intentionally left blank. Service Guide 85309-90082...

  • Page 52: Replaceable Parts Listings

    Service LO/IF Distribution Unit Replaceable Parts 85309B Replaceable Parts Listings Table 4-1 Major 85309B Assemblies (Standard) Reference Part Number Description Designator 85309-60135 PC board, Display 85309-60134 PC board, ALC/REG 0955-0791 Low pass filter, 30 MHz 0955-2245 Power divider, 18 GHz, 4-way 5087-7755 RF amplifier, 0.3 to 18 GHz (Ref Chan) 5087-7755...
  • Page 53 LO/IF Distribution Unit Service 85309B Replaceable Parts Figure 4-1 Major 85309B Assemblies (Standard) Service Guide 85309-90082...
  • Page 54 Service LO/IF Distribution Unit Replaceable Parts 85309B Table 4-2 Cables (Standard) Reference Part Number Description Designator 85309-20139 A17 OUT - A11 IN 85309-20141 AT3 OUT - A12 IN 85309-20140 AT4 OUT - A13 IN 85309-20144 A16 OUT - RPJ3 85309-60111 A16 - RPJ8 85309-20138 A17 IN - RPJ1...
  • Page 55 LO/IF Distribution Unit Service 85309B Replaceable Parts Figure 4-2 Cable Locations (Standard) Service Guide 85309-90082...
  • Page 56 Service LO/IF Distribution Unit Replaceable Parts 85309B Table 4-3 Major 85309B Assemblies (Option 001) Reference Part Number Description Designator 85309-60135 PC board, Display 85309-60134 PC board, ALC/REG 0955-0791 Low pass filter, 30 MHz 0955-2245 Power divider, 18 GHz, 4-way 5087-7755 RF amplifier, 0.3 to 18 GHz (Ref Chan) 5087-7755 RF amplifier, 0.3 to 18 GHz (Test1 Chan)
  • Page 57 LO/IF Distribution Unit Service 85309B Replaceable Parts Figure 4-3 Major 85309B Assemblies (Option 001) Service Guide 85309-90082...
  • Page 58 Service LO/IF Distribution Unit Replaceable Parts 85309B Table 4-4 Cables (Option 001) Reference Part Number Description Designator 85309-20139 A17 OUT - A11 IN 85309-20141 AT3 OUT - A12 IN 85309-20140 AT4 OUT - A13 IN 85309-20144 A16 OUT - RPJ3 85309-60111 A16 - RPJ8 85309-20138...
  • Page 59 LO/IF Distribution Unit Service 85309B Replaceable Parts Figure 4-4 Cable Locations (Option 001) Service Guide 85309-90082 4-11...
  • Page 60 Service LO/IF Distribution Unit Replaceable Parts 85309B Table 4-5 Major 85309B Assemblies (Option 002) Reference Part Number Description Designator 85309-60135 PC board, Display 85309-60134 PC board, ALC/REG 0955-0791 Low pass filter, 30 MHz 0955-2245 Power divider, 18 GHz, 4-way 5087-7755 RF amplifier, 0.3 to 18 GHz (Ref Chan) 5087-7755 RF amplifier, 0.3 to 18 GHz (Test1 Chan)
  • Page 61 LO/IF Distribution Unit Service 85309B Replaceable Parts Figure 4-5 Major 85309B Assemblies (Option 002) Service Guide 85309-90082 4-13...
  • Page 62 Service LO/IF Distribution Unit Replaceable Parts 85309B Table 4-6 Cables (Option 002) Reference Part Number Description Designator 85309-20139 A17 OUT - A11 IN 85309-20141 AT3 OUT - A12 IN 85309-20140 AT4 OUT - A13 IN 85309-20144 A16 OUT - RPJ3 85309-60111 A16 - RPJ8 85309-20138...
  • Page 63 LO/IF Distribution Unit Service 85309B Replaceable Parts Figure 4-6 Cable Locations (Option 002) Service Guide 85309-90082 4-15...
  • Page 64 Service LO/IF Distribution Unit Replaceable Parts 85309B Table 4-7 Major 85309B Assemblies (Option 400) Reference Part Number Description Designator 85309-60135 PC board, Display 85309-60134 PC board, ALC/REG 85309-60136 PC board, Combi 0955-0791 Low pass filter, 30 MHz 0955-2245 Power divider, 18 GHz, 4-way 5087-7755 RF amplifier, 0.3 to 18 GHz (Ref Chan) 5087-7755...
  • Page 65 LO/IF Distribution Unit Service 85309B Replaceable Parts Figure 4-7 Major 85309B Assemblies (Option 400) Service Guide 85309-90082 4-17...
  • Page 66 Service LO/IF Distribution Unit Replaceable Parts 85309B Table 4-8 Cables (Option 400) Reference Part Number Description Designator 85309-20151 RPJ1 - SW3 (C) 85309-20152 SW3 (2) - A17 IN 85309-20139 A17 OUT - A11 IN 85309-20141 AT3 OUT - A12 IN 85309-20140 AT4 OUT - A13 IN 85309-20156...
  • Page 67 LO/IF Distribution Unit Service 85309B Replaceable Parts Figure 4-8 Cable Locations (Option 400) Service Guide 85309-90082 4-19...
  • Page 68 Service LO/IF Distribution Unit Replaceable Parts 85309B Table 4-9 Major 85309B Assemblies (Option 401) Reference Part Number Description Designator 85309-60135 PC board, Display 85309-60134 PC board, ALC/REG 85309-60136 PC board, Combi 0955-0791 Low pass filter, 30 MHz 0955-2245 Power divider, 18 GHz, 4-way 5087-7755 RF amplifier, 0.3 to 18 GHz (Ref Chan) 5087-7755...
  • Page 69 LO/IF Distribution Unit Service 85309B Replaceable Parts Figure 4-9 Major 85309B Assemblies (Option 401) Service Guide 85309-90082 4-21...
  • Page 70 Service LO/IF Distribution Unit Replaceable Parts 85309B Table 4-10 Cables (Option 401) Reference Part Number Description Designator 85309-20151 RPJ1 - SW3 (C) 85309-20152 SW3 (2) - A17 IN 85309-20139 A17 OUT - A11 IN 85309-20141 AT3 OUT - A12 IN 85309-20140 AT4 OUT - A13 IN 85309-20156...
  • Page 71 LO/IF Distribution Unit Service 85309B Replaceable Parts Figure 4-10 Cable Locations (Option 401) Service Guide 85309-90082 4-23...
  • Page 72 Service LO/IF Distribution Unit Replaceable Parts 85309B Table 4-11 Major 85309B Assemblies (Option 402) Reference Part Number Description Designator 85309-60135 PC board, Display 85309-60134 PC board, ALC/REG 85309-60136 PC board, Combi 0955-0791 Low pass filter, 30 MHz 0955-2245 Power divider, 18 GHz, 4-way 5087-7755 RF amplifier, 0.3 to 18 GHz (Ref Chan) 5087-7755...
  • Page 73 LO/IF Distribution Unit Service 85309B Replaceable Parts Figure 4-11 Major 85309B Assemblies (Option 402) Service Guide 85309-90082 4-25...
  • Page 74 Service LO/IF Distribution Unit Replaceable Parts 85309B Table 4-12 Cables (Option 402) Reference Part Number Description Designator 85309-20151 RPJ1 - SW3 (C) 85309-20152 SW3 (2) - A17 IN 85309-20139 A17 OUT - A11 IN 85309-20141 AT3 OUT - A12 IN 85309-20140 AT4 OUT - A13 IN 85309-20156...
  • Page 75 LO/IF Distribution Unit Service 85309B Replaceable Parts Figure 4-12 Cable Locations (Option 402) Service Guide 85309-90082 4-27...
  • Page 76 Service LO/IF Distribution Unit Replaceable Parts 85309B 4-28 Service Guide 85309-90082...

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