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Leveling Procedure

Software Utility

7

Getting Started 1331.3069.02 ─ 03

●

Controlling the electronic attenuator of an E-type converter is not supported by the
R&S

ZNA, and hence the waveguide attenuator calibration is not available. How-

ever, E-type converters can also be used with their default (unattenuated) output
power.

●

To improve the accuracy of P

RF-In

, it is recommended to perform complementary

power flatness calibrations at the related analyzer ports (including the cables con-
necting the analyzer port to the RF Input of the frequency converter) before starting
the frequency converter leveling.

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Summary of Contents for R&S

Page 1: ...Software Utility R S Converter Leveling Tool Getting Started Getting Started Version 03 1331306902 ONÓ2 ...

Page 2: ...ohde schwarz com Subject to change Data without tolerance limits is not binding R S is a registered trademark of Rohde Schwarz GmbH Co KG Trade names are trademarks of the owners 1331 3069 02 Version 03 Software Utility Throughout this manual R S is abbreviated as R S The R S Converter Leveling Tool is abbreviated as Leveling Tool ...

Page 3: ... or R S NRP Z58 13 5 2 Setup with a VDI Erickson Power Meter 13 6 Preparing Analyzer and Converters 15 6 1 Vector Network Analyzers R S ZNA 15 6 2 Vector Network Analyzers R S ZVA and R S ZVT 16 7 Program Start and VNA Remote Control 18 8 External Power Meters Control Connection 20 8 1 R S NRP110T or R S NRP Z58 20 8 2 VDI Erickson PM4 or PM5 21 9 Working with the Leveling Tool 23 9 1 Remote Contr...

Page 4: ...Contents Software Utility 4 Getting Started 1331 3069 02 03 ...

Page 5: ...g measurements can be extended to setups involving fre quency converters within their supported frequency and power ranges 1 frequency sweeps with correct and constant test port power channel base power 2 power sweeps with correct test port power steps The R S Converter Leveling Tool is provided under the terms and conditions for roy alty free products For details see Terms Conditions on the Rohde...

Page 6: ... frequency converter s maximum RF level which is typically advantageous w r t measurement time and accuracy at the power meter For the subsequent steps the correction factors c fj PRF Out fj PREF fj on loga rithmic scale are assumed to be independent of the input power level PRF In 2 RF input power calibration This is the actual leveling step i e for each point on the leveling grid the RF out put ...

Page 7: ...r calibration is not available How ever E type converters can also be used with their default unattenuated output power To improve the accuracy of PRF In it is recommended to perform complementary power flatness calibrations at the related analyzer ports including the cables con necting the analyzer port to the RF Input of the frequency converter before starting the frequency converter leveling ...

Page 8: ...Required Options For two port instruments which can only have one internal source the LO signal for the converters must be provided via R S ZNA B8 or an external generator If R S ZNA B8 is used then option R S ZNA B26 is also required Option R S ZNA B26 Direct IF Access or R S ZNAxx B16 Direct Generator Receiver Access to connect the Meas and Ref ports of the converters Option R S ZNA K8 Converter...

Page 9: ...ns The present version of the Leveling Tool requires a or R S ZVT firmware version V3 60 or higher For the R S ZVA110 a firmware version 4 11 or higher is required Free firmware updates are available for download on the R S ZVA and R S ZVT product pages http www rohde schwarz com product zva http www rohde schwarz com product zvt Refer to the instrument s help system or operating manual for instal...

Page 10: ... required For details concerning its usage see the R S NRPxxT N or R S NRP Z Power Sensors User Manual and references no 3 4 and 5 in Chapter 10 Additional Information on page 33 VDI Erickson power meters PM5 or PM4 for frequencies above 110 GHz The power meter s sensor head is equipped with a WR10 waveguide connector so depending on the frequency converter model a suitable WRxx to WR10 waveguide ...

Page 11: ...frequency converter allow sufficient thermal settling time 1 hour is recom mended After the system has reached thermal equilibrium switch off the conver ter s RF output power by selecting Channel Pwr Bw Avg Power RF Off All Chanels on the VNA Press the ZERO button on the front panel of the PMx After that reactivate the converter s output power by deselecting RF Off All Chanels Other power meters s...

Page 12: ... rohde schwarz com software zna run it and follow the on screen instructions The Leveling Tool can be installed and run on the R S ZNA without issues For R S ZVA and R S ZVT it is recommended to install the Leveling Tool on a separate PC the Leveling Tool PC if the Leveling Tool is installed on a PC R S ZVA or R S ZVT running Windows XP SP3 power meters VDI Erickson PMx are not supported In the fo...

Page 13: ...nectors on the front or rear panel of the analyzer The Leveling Tool uses a LAN or GPIB connection to operate the analyzer read write settings query results 5 2 Setup with a VDI Erickson Power Meter The VDI Erickson power meters PM5 and PM4 are not natively supported by the ana lyzer firmware The PMx control unit is connected to the Leveling Tool PC via USB The PM5 is equipped with a USB interface...

Page 14: ... power meter driver on the VNA and sets up an external power meter connec tion using this driver The Leveling Tool acts as an adapter between the higher level power meter interface specified by the driver file and the low level serial interface of the VDI Erickson power meters Remote control of a PMx requires a LAN connection between VNA and the Leveling Tool PC USB and GPIB are only supported for...

Page 15: ...nalyzers R S ZNA At the analyzer GUI proceed as follows Open the Converter Configuration dialog System Setup Frequency Con verter Frequency Converter and configure the connected converters and signal paths as described in the online help of the analyzer firmware see 2 in Chapter 10 Additional Information on page 33 Figure 6 1 R S ZNA Converter Configuration dialog For frequency converters of the R...

Page 16: ...nd the network analyzer For details refer to reference no 3 or 4 2 If you use a frequency converter of the R S ZCxxx family that has never been con nected to the respective VNA before connect it to the VNA via USB and follow the on screen instructions of the New Converter Detected dialog 3 Ensure that the frequency converter mode of the VNA is active Open the System System Configuration Frequency ...

Page 17: ...etting Started 1331 3069 02 03 Figure 6 2 System Configuration Frequency Converter tab For frequency converters of the R S ZCxxx family make sure the converters are individually assigned to their respective ports Vector Network Analyzers R S ZVA and R S ZVT ...

Page 18: ...nfiguration dialog Figure 7 1 VNA connection configuration 2 In the Select Connection Configuration dialog select specify the appropriate con nection properties for your analyzer E g select connection type TCP IP HiSLIP R S ZNA only or VXI 11 and enter the IP Address of the VNA If the Leveling Tool is installed directly on the VNA select Local and enter IP Address 127 0 0 1 default The VISA Connec...

Page 19: ... Configuration dialog 4 In the Select Connection Configuration dialog click OK to establish the connec tion or Cancel to abort the connection attempt You can start another connection attempt by selecting Configuration from the main window of the Leveling Tool see Configuration on page 24 On subsequent program starts the configuration of the last successful connection is reused ...

Page 20: ... R S NRP110T or R S NRP Z58 To establish a remote control connection between the VNA and an R S NRP110T or R S NRP Z58 the power meter has to be connected to the analyzer via USB see Chapter 5 1 Setup with R S NRP110T or R S NRP Z58 on page 13 If Auto Con fig R S NRP Power Sensors is enabled the power meter is automatically configured by the analyzer firmware otherwise it has to be configured manu...

Page 21: ...eter a serial connection between Leveling Tool PC and power meter see Chapter 5 2 Setup with a VDI Erickson Power Meter on page 13 To set up the power meter select PM4 or PM5 from the main window of the Level ing Tool see Figure 9 1 You are prompted with the following dialog Figure 8 3 Connection configuration for PM4 left and PM5 right With suitable COM port and LAN IP settings the analyzer can c...

Page 22: ... interfaces select the IP address of the network interface that is used for communication with the VNA Connect On Connect the Leveling Tool takes the following actions configure the corresponding power meter in the analyzer firmware establish the required serial connection to the power meter In the Leveling Tool when the connection is established the Power Meter Display PMx dialog indicates the po...

Page 23: ...dow Figure 9 1 Leveling Tool main window The menu bar at the top of the window gives access to the remote control connection configuration Each tab in the client area represents a frequency converter port according to the selected Use of Resources see Figure 6 1 For each port that requires exact output levels perform the leveling tasks as described in Chapter 9 4 Operating the Leveling Tool on pag...

Page 24: ...ickson power meters PM4 and PM5 respec tively See Chapter 8 2 VDI Erickson PM4 or PM5 on page 21 9 2 Calibration Settings The left part of each tab in the Leveling Tool main window allows you to define the cali bration settings for the respective port For background information see Chapter 2 Leveling Procedure on page 6 Frequency From To and Sweep Points 25 Min Max RF In Level and RF In Level Step...

Page 25: ...mended for converters with extremely steep power transfer characteristics If Fixed ALC Configuration is checked RF In Level Step Size is set to 1 dB and dis abled Fixed ALC Configuration This checkbox is available for R S ZNA only If checked RF In Level Step Size is fixed to 1dB and the corresponding input field is disabled Threshold This read only value is available for frequency converters with ...

Page 26: ...tive Meas Delay Time only makes sense if an additional delay on top of the system determined response time is required Load from VNA Loads the active channel s start frequency stop frequency number of sweep points and measurement delay from the analyzer and applies them as Frequency From Frequency To Sweep Points see Frequency From To and Sweep Points on page 25 and Meas Delay Time on page 25 resp...

Page 27: ...ecutes all applicable steps Automatic Calibration Calibrate All 27 Manual Calibration 1 Calibration Reference Receiver 27 Manual Calibration 2 Calibration RF Input Power 28 Manual Calibration 3 Calibration Waveguide Attenuator 29 Activate Cal Data 30 Automatic Calibration Calibrate All Performs calibration steps 1 and 2 in one go Manual Calibration 1 Calibration Reference Receiver Performs a refer...

Page 28: ...ation R S ZVA Firmware Make sure the power meter is connected to the frequency converter test port before executing this command Otherwise the following error message is displayed Manual Calibration 2 Calibration RF Input Power Records the relation between frequency converter input and output power Calibration Commands ...

Page 29: ...ency converter User Data Set on the hard disk of the analyzer but is not activated unless Activate Cal Data is selected Because the output is measured via the reference receiver the power meter is not used during this step Manual Calibration 3 Calibration Waveguide Attenuator This step is required for frequency converters with electronic attenuators that are con trolled by a R S ZVA or R S ZVT via...

Page 30: ...he R S ZNA firmware this activates Power Control mode User for the related frequency converter port and activates the Data Set created by the Leveling Tool Figure 9 4 Leveling Dataset Configuration The user data sets are stored in a child directory of C Users Public Documents Rohde Schwarz ZNA FrequencyConverter The directory name is automatically generated using the frequency converter type and t...

Page 31: ...warz NWA FrequencyConverter The directory name is automat ically generated using the frequency converter type and the current date and time 9 4 Operating the Leveling Tool Operation of the Leveling Tool is straightforward For each frequency converter Port i that requires output power leveling connect the power sensor to the waveguide test port activate the corresponding tab in the main window of t...

Page 32: ...en the Calibration Manager dialog Channel Cal Use Cal Cal Manager Select the recorded receiver calibration from the Calibration Pool and apply it to the active channel see Figure 9 2 R S ZVA or R S ZVT Open the Frequency Converter tab of the System Configuration dialog see Figure 6 1 Click the ellipsis button in the Power Control column of the Port Config table to open the Power Control dialog see...

Page 33: ...e Multiport Millimeter Wave Measurements Using Converters of the R S ZVA Family Rohde Schwarz GmbH Co KG 2007 2 User manual or help system of R S ZNA R S ZVA and R S ZVT vector network analyzers see https www rohde schwarz com manual zna https www rohde schwarz com manual zva https www rohde schwarz com manual zvt 3 R S ZCxxx converters Getting Started see https www rohde schwarz com manual zcxxx ...

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