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Rohde & Schwarz ZN-ZCG User Manual
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Rohde & Schwarz ZN-ZCG User Manual

Rohde & Schwarz ZN-ZCG User Manual

Comb generator
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R&S
ZN-ZCG
Comb Generator
User Manual
(;ÝÓÖ2)
1179697202
Version 02

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Summary of Contents for Rohde & Schwarz ZN-ZCG

  • Page 1 ® R&S ZN-ZCG Comb Generator User Manual (;ÝÓÖ2) 1179697202 Version 02...
  • Page 2 ® This manual describes the R&S ZN-ZCG Comb Generator. ● ® R&S ZN-ZCG44 (50 Ω, 2.92 mm (f) connectors, 10 MHz to 44 GHz) ● ® R&S ZN-ZCG67 (50 Ω, 1.85 mm (f) connectors, 10 MHz to 67 GHz) © 2025 Rohde & Schwarz Muehldorfstr.
  • Page 3 R&S ZN-ZCG Contents 1 Safety and regulatory information............5 Safety instructions......................5 Labels on the product....................7 Warning messages in the documentation..............7 2 Welcome to the R&S ZN-ZCG Comb Generator........9 Overview........................9 Key features........................9 Documentation overview....................10 2.3.1 Manuals.........................10 2.3.2 Specifications........................ 11 2.3.3...
  • Page 4 ® Contents R&S ZN-ZCG Basic commands......................25 Output and control commands..................28 Correction data commands..................30 System commands..................... 30 Diagnostic commands....................34 5 Troubleshooting................... 36 6 Maintenance, storage and disposal........... 37 Cleaning........................37 Storage.........................37 Disposal........................37 7 Transporting..................38 8 Contacting customer support.............39 Annex....................40 A Firmware update..................
  • Page 5 Intended use The R&S ZN-ZCG Comb Generator has been designed to be used with a R&S vector network analyzer (VNA) and R&S signal and spectrum analyzer. They are intended for the development, production and verification of electronic components and devices in industrial, administrative and laboratory environments.
  • Page 6 ® Safety and regulatory information R&S ZN-ZCG Safety instructions Reconfigure or adjust the product only as described in the product documentation or the specifications. Any other modifications can affect safety and are not permitted. Never open the casing of the product. Only service personnel authorized by Rohde &...
  • Page 7 ® Safety and regulatory information R&S ZN-ZCG Warning messages in the documentation Meaning of safety labels Safety labels on the product warn against potential hazards. Potential hazard Read the product documentation to avoid personal injury or product damage. Electrical hazard Indicates live parts.
  • Page 8 ® Safety and regulatory information R&S ZN-ZCG Warning messages in the documentation NOTICE Potential risks of damage. Could result in damage to the supported product or to other property. User Manual 1179.6972.02 ─ 02...
  • Page 9 2 Welcome to the R&S ZN-ZCG Comb Gen- erator The R&S ZN-ZCG Comb Generator is an R&S instrument used as a phase reference standard to provide precision phase calibration of R&S network analyzers, and R&S signal and spectrum analyzers, referenced to the National Institute of Standards and Technology (NIST).
  • Page 10 Installation instructions Introduces the R&S ZN-ZCG Comb Generator and describes how to set up and start working with the instrument. It also contains safety instructions in multiple languages and further important information. The printed document is delivered with the instru- ment.
  • Page 11 R&S ZN-ZCG Documentation overview 2.3.2 Specifications The Specifications contains the technical specifications of the R&S ZN-ZCG Comb Generator. It also lists all options with their order numbers and accessories. www.rohde-schwarz.com/brochure-datasheet/zn-zcg 2.3.3 Calibration certificate The document is available on https://gloris.rohde-schwarz.com/calcert. You need the device ID of your instrument, which you can find on a label on the rear panel.
  • Page 12 "Lifting and carrying the product" on page 6. 3.1.2 Unpacking and checking 1. Unpack the R&S ZN-ZCG Comb Generator carefully. 2. Retain the original packing material. Use it when transporting or shipping the R&S ZN-ZCG Comb Generator later. 3. Using the delivery notes, check the equipment for completeness.
  • Page 13 "Intended use" on page 5 3.1.4.1 Placing the R&S ZN-ZCG Comb Generator on a bench top To place the product on a bench top 1. Place the product on a stable, flat and level surface. Ensure that the surface can support the weight of the product.
  • Page 14 <variant> can be 44 or 67. For example, ZN-ZCG44-100001. 3.1.7.1 Networks with DHCP The ZN-ZCG Comb Generator is preconfigured to use the dynamic host configuration protocol (DHCP). In such networks, the instrument is automatically assigned a free IP address.
  • Page 15 3.2 Instrument tour This chapter provides an overview of the control elements and connectors of the R&S ZN-ZCG Comb Generator. The meaning of the labels on the R&S ZN-ZCG Comb Generator is described in Sec- tion 1.2, "Labels on the product",...
  • Page 16 The PoE LED, located just next to the RJ-45 LED, displays the status of the Power over Ethernet (PoE). The PoE LED status states are described in Table 3-2. Figure 3-2: R&S ZN-ZCG Comb Generator LAN connector 1 = RJ-45 LED 2 = PoE LED 3 = LAN Reset...
  • Page 17 Color Status state Description Yellow Blinking The R&S ZN-ZCG Comb Generator waits for the DHCP renewal process. Steady The R&S ZN-ZCG Comb Generator is not connected to the network properly. Either the connection is erroneous or the instrument has not been assigned a valid IP address yet.
  • Page 18 -500 mV. 3.3 Application This chapter describes how to configure the standard setup with an R&S ZNA network analyzer/R&S signal and spectrum analyzer, and R&S ZN-ZCG Comb Generator for phase calibration. 3.3.1 RF connections The R&S ZNA network analyzer/R&S signal and spectrum analyzer allow you to con-...
  • Page 19 R&S ZN-ZCG Comb Generator. Therefore, proceed as follows: 1. Switch on and start your network analyzer. 2. Connect the R&S ZN-ZCG Comb Generator to a PoE injector (or use a PoE sup- ported LAN switch) to power up the instrument.
  • Page 20 You require the R&S ZNA-B12 hardware option to perform phase calibration using the R&S ZNA. 1. Connect the desired port of R&S ZNA to the [RF Out] port of the R&S ZN-ZCG Comb Generator. 2. Perform the automatic calibration for the selected port using the measurement wiz- ard of your R&S ZNA.
  • Page 21 ® Getting started R&S ZN-ZCG Instrument control 7. To generate a 10 MHz frequency grid using the R&S ZN-ZCG Comb Generator, run the SCPI commands in the following sequence: *RST //Resets the R&S ZN-ZCG Comb Generator CONFigure:CLOCk:PATH X3_640 //Selects the 640 MHz path which embeds a frequency tripler for the clock input...
  • Page 22 ® Getting started R&S ZN-ZCG Instrument control Table 3-4: Remote control interfaces and protocols Interface Comments Local Area Network The LAN port, located at the backplane of the instrument, supports a RAW TCP/IP (LAN) protocol. All LAN parameters can be set using SCPI commands using the software used for remote control.
  • Page 23 Responses are messages that the instrument transmits to the controller after a query command. Responses contain measurement results, instrument settings or status information on the instrument. You find detailed descriptions of the commands for controlling the ZN-ZCG Comb Gen- erator in Section 4, "Remote control –...
  • Page 24 ® Remote control – commands R&S ZN-ZCG Notations 4 Remote control – commands This chapter describes all the commands that are relevant for remote control of the ZN- ZCG Comb Generator. The "List of Commands" at the end of the manual contains all commands in an alphabetical order.
  • Page 25 Example: Definition: OUTPut:STATe ON | OFF Command OUTPut:STATe ON turns the output of the ZN-ZCG Comb Generator ON Command OUTPut:STATe OFF turns the output of the ZN-ZCG Comb Generator OFF Parameters in braces can be included in the command once, several times or not at all.
  • Page 26 ® Remote control – commands R&S ZN-ZCG Basic commands *CLS Clear status Resets the following: ● Status byte (STB) ● Standard event register (ESR) ● EVENt part of the QUEStionable and the OPERation register ● Error/event queue The command does not alter the ENABle and TRANsition parts of the registers.
  • Page 27 ® Remote control – commands R&S ZN-ZCG Basic commands Usage: Query only *OPC Operation complete Sets bit 0 in the event status register when all preceding commands have been execu- ted. Send this command at the end of a program message. It is important that the read timeout is set sufficiently long.
  • Page 28 ....................29 CONFigure:CLOCk:PATH ..................29 CONFigure:CLOCk:FREQuency OUTPut[:STATe] <State> Possible with host interface connection: No. Turns the output of the R&S ZN-ZCG Comb Generator ON or OFF. Returns the output state of the R&S ZN-ZCG Comb Generator. Parameters: <State> ON | OFF *RST:...
  • Page 29 ® Remote control – commands R&S ZN-ZCG Output and control commands Integer number <N> is used as the division factor between reference clock and output comb spectrum. Parameters: <N> Range: 1 to 1000000 *RST: Example: OUTP:DIV:FAC 64 CONFigure:CLOCk:PATH <Path> Possible with host interface connection: No.
  • Page 30 ® Remote control – commands R&S ZN-ZCG System commands 4.4 Correction data commands .................... 30 MEMory:CORRdata:MATCh? ..................... 30 MEMory:CORRdata:COMB? ................30 MEMory:CORRdata:COMB:CATalog? MEMory:CORRdata:MATCh? Possible with host interface connection: Yes. Reads the complex reflection coefficient of the RF output port. Example: MEMory:CORRdata:MATCh? ‘C:...
  • Page 31 ® Remote control – commands R&S ZN-ZCG System commands ............32 SYSTem:COMMunicate:NETWork:IPADdress:GATeway ............32 SYSTem:COMMunicate:NETWork:IPADdress:MODE ..........33 SYSTem:COMMunicate:NETWork:IPADdress:SUBNet:MASK ................ 33 SYSTem:COMMunicate:NETWork:RESTart ................33 SYSTem:COMMunicate:NETWork:RESet ............... 33 SYSTem:COMMunicate:NETWork:STATus? ............34 SYSTem:COMMunicate:NETWork[:COMMon]:DOMain ...........34 SYSTem:COMMunicate:NETWork[:COMMon]:HOSTname SYSTem:DFPRint? Possible with host interface connection: Yes. Queries the device footprint. The device footprint contains detailed information about the instrument and is mostly used for service purposes.
  • Page 32 Query only SYSTem:COMMunicate:NETWork:IPADdress <ipaddress> Possible with host interface connection: Yes. Effective only if is set to SYSTem:COMMunicate:NETWork:IPADdress:MODE STATic. Sets the IP address of the R&S ZN-ZCG Comb Generator. Parameters: <ipaddress> Example: SYST:COMM:NETW:IPAD '192.168.10.29' Sets 192.168.10.29 as IP address. SYSTem:COMMunicate:NETWork:IPADdress:GATeway <gateway>...
  • Page 33 ® Remote control – commands R&S ZN-ZCG System commands Example: SYST:COMM:NETW:IPAD:MODE AUTO The IP address is assigned automatically. SYSTem:COMMunicate:NETWork:IPADdress:SUBNet:MASK <netmask> Possible with host interface connection: Yes. Effective only if is set to SYSTem:COMMunicate:NETWork:IPADdress:MODE STATic. Sets the subnet mask. Parameters: <netmask>...
  • Page 34 For this purpose, the R&S ZN-ZCG Comb Generator restarts its connection to the network, which can take several seconds. During this time, you cannot address the R&S ZN-ZCG Comb Generator. After the restart, you can only address the R&S ZN-ZCG Comb Generator using the newly set hostname.
  • Page 35 Possible with host interface connection: Yes. Queries the warm-up state of the R&S ZN-ZCG Comb Generator. Returns 1 (True) if the R&S ZN-ZCG Comb Generator has been connected for a suffi- cient time to reach its operating temperature. Else, returns 0 (False).
  • Page 36 ® Troubleshooting R&S ZN-ZCG 5 Troubleshooting In case the self-test detects a problem, the R&S ZN-ZCG Comb Generator display shows the corresponding error code. Table 5-1 lists the different error codes. Table 5-1: Error codes Error code Description Temperature sensor readings exceeded defined limits...
  • Page 37 Maintenance, storage and disposal R&S ZN-ZCG Disposal 6 Maintenance, storage and disposal The R&S ZN-ZCG Comb Generator does not require maintenance at regular intervals. 6.1 Cleaning How to clean the product is described in "Cleaning the product" on page 6.
  • Page 38 ® Transporting R&S ZN-ZCG 7 Transporting Lifting and carrying See: ● "Lifting and carrying the product" on page 6 Packing Use the original packaging material. It consists of antistatic wrap for electrostatic pro- tection and packing material designed for the product.
  • Page 39 ® Contacting customer support R&S ZN-ZCG 8 Contacting customer support Technical support – where and when you need it For quick, expert help with any Rohde & Schwarz product, contact our customer sup- port center. A team of highly qualified engineers provides support and works with you to find a solution to your query on any aspect of the operation, programming or applica- tions of Rohde &...
  • Page 40 ZN-ZCG Performing the firmware update Annex A Firmware update Firmware updates for the R&S ZN-ZCG Comb Generator are available as a single download from the R&S ZN-ZCG Comb Generator firmware page www.rohde- schwarz.com/firmware/zn-zcg. After the update to this firmware version, the instrument will start with preset instrument settings.
  • Page 41 ® Firmware update R&S ZN-ZCG Performing the firmware update 7. Select the checkbox next to your instrument name. 8. Click "Install". User Manual 1179.6972.02 ─ 02...
  • Page 42 ® Firmware update R&S ZN-ZCG Performing the firmware update The comb generator reboots at the end of the installation. Note: Multiple devices can be selected to execute the firmware installation on all the selected devices at the same time. 9. Click "Exit".
  • Page 43 ® Firmware update R&S ZN-ZCG Firmware downgrade The new firmware is successfully installed on your comb generator. Risk of potential damage to the firmware Disconnecting the power supply while an update is in progress leads to missing or faulty firmware. Take special care not to disconnect the power supply while the update is in progress.
  • Page 44 ® List of commands R&S ZN-ZCG List of commands *CLS.................................26 *ESE................................26 *ESR?................................26 *IDN?................................26 *IST?................................26 *OPC................................27 *PRE................................27 *RST................................27 *SRE................................27 *STB?................................27 *TST?................................28 *WAI.................................28 CONFigure:CLOCk:FREQuency........................29 CONFigure:CLOCk:PATH..........................29 DIAGnostic:DEVice:LOGGing?........................35 DIAGnostic:DEVice:TEMPerature?......................... 35 DIAGnostic:DEVice:TEST?..........................34 DIAGnostic:DEVice:WARMup[:STATe]?......................35 MEMory:CORRdata:COMB:CATalog?......................30 MEMory:CORRdata:COMB?........................... 30 MEMory:CORRdata:MATCh?.......................... 30 OUTPut:DIV:FACTor............................
  • Page 45 ® Index R&S ZN-ZCG Index Bench top, placing the R&S ZN-ZCG Comb Generator ..13 Open source acknowledgment (OSA) ....... 11 Operating site Choosing ..............12 Overview Cable selection Rear panel ..............15 Test setup considerations ........... 13 Side panel ..............18 Calibration certificate ............
  • Page 46 ® Index R&S ZN-ZCG Unpacking the instrument ..........12 Remote control interface ..........21 User manual ..............10 Warning messages ..............7 User Manual 1179.6972.02 ─ 02...