R&S®NRPC/NRVC, R&S®Recal+
Power Sensor Calibration Kits and
Calibration Software
Manual
1109.0930.32 – 14
Manual
This manual describes the following power sensor calibration kit types and the calibration software.
Power Sensor Calibration Kits
● R&S®NRPC18 order no. 1418.0931.03
● R&S®NRPC33 order no. 1418.0677.03
● R&S®NRPC40 order no. 1159.6802.03
● R&S®NRPC50 order no. 1159.6883.03
● R&S®NRPC67 order no. 1418.1567.02
● R&S®NRPC-LS order no. 1421.7004.02
● R&S®NRVC discontinued product
Calibration Software
● R&S®Recal+
© 2021 Rohde & Schwarz GmbH & Co. KG
Mühldorfstr. 15, 81671 München, Germany
Phone: +49 89 41 29 - 0
Fax: +49 89 41 29 12 164
Email: info@rohde-schwarz.com
Internet: www.rohde-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 their owners.
Throughout this manual, the products from Rohde & Schwarz are indicated without the ® symbol, e.g. R&S®NRPC/NRVC is
abbreviated as R&S NRPC/NRVC.
Contents R&S NRPC
1109.0930.32 - 14 3 E-14
Contents
1 General .................................................................................................................... 6
Intended Use ........................................................................................................................................ 6
Key features ......................................................................................................................................... 6
Description of the Calibration Kits .................................................................................................... 6
Information about the R&S
®
NRPC Calibration Kit ........................................................................... 7
Information about the R&S
®
NRVC Calibration Kit ........................................................................... 7
Information and Instructions on Calibration .................................................................................... 8
Warm-Up Time for Devices under Test (DUTs) ............................................................................... 8
Reflection Measurement .................................................................................................................. 8
Calibration of Absolute Accuracy ..................................................................................................... 8
Refreshing the Device under Test's Data Set ............................................................................. 8
Gamma Correction ...................................................................................................................... 9
R&S
®
NRP Sensors with Attenuator ............................................................................................ 9
Diode Sensors in the R&S®NRV and R&S
®
URV5 Families........................................................ 9
Linearity Calibration .......................................................................................................................... 9
Information about the Supported Sensors .....................................................................................10
Calibration of absolute accuracy with standard R&S
®
NRPC ....................................................10
Calibration of linearity with standard R&S
®
NRPC-LS ...............................................................12
2 Putting into Operation ......................................................................................... 13
Unpacking the Unit ............................................................................................................................13
R&S®NRPC18 and R&S
®
NRPC18-B1 ...........................................................................................13
R&S®NRPC33 and R&S
®
NRPC33-B1 ...........................................................................................14
R&S®NRPC40 and R&S
®
NRPC40-B1 ...........................................................................................15
R&S®NRPC50 and R&S
®
NRPC50-B1 ...........................................................................................16
R&S®NRPC67 and R&S
®
NRPC67-B1 ...........................................................................................17
R&S
®
NRPC-LS...............................................................................................................................18
Additional Hardware Requirements ................................................................................................19
Devices for the R&S
®
NRPC Calibration Kit ...................................................................................19
Controller ...................................................................................................................................19
R&S
®
NRP-ZK6, -ZK8 interface cable .......................................................................................19
R&S
®
NRX Power Meter ............................................................................................................19
Generators for Calibration of Absolute Accuracy ......................................................................20
Generators for Calibration of Linearity ......................................................................................22
Vector Network Analyzers for Calibration of Matching .............................................................22
Power Calibration for R&S
®
NRP Sensors .......................................................................................24
R&S
®
NRP Sensors 10 MHz (8 kHz) up to 18 GHz ........................................................................24
R&S
®
FSH-Z1, -Z18 ........................................................................................................................24
R&S
®
NRP Sensors up to 33 GHz ..................................................................................................25
R&S
®
NRP Sensors up to 40 GHz ..................................................................................................25
R&S
®
NRP Sensors up to 50 GHz ..................................................................................................26
R&S NRPC / NRVC Contents
1109.0930.32 - 14 4 E-14
R&S
®
NRP Sensors up to 67 GHz ..................................................................................................26
Linearity Calibration for R&S
®
NRP Sensors...................................................................................27
R&S
®
NRP Sensors ........................................................................................................................27
3 Sensor Calibration ............................................................................................... 28
Preparation 28
Installing the R&S
®
Recal+ Calibration Software on the Hard Disk ................................................28
Installing the R&S
®
ZVX_RECAL Additional Program on the Hard Disk ........................................28
Starting the Calibration Software ...................................................................................................28
Entering the Name and Address of the Calibration Laboratory .....................................................29
Defining Directories ...................................................................................................................29
Initializing the Measuring Equipment .............................................................................................30
Configuration of Power Meters with the R&S
®
NRPC Calibration Kit ........................................30
Initializing the R&S
®
NRX ...........................................................................................................31
Initializing the Generators .........................................................................................................31
Initializing Network Analyzers ...................................................................................................31
Performing the Calibration ...............................................................................................................32
Incoming Inspection .......................................................................................................................33
Checking the Matching ...................................................................................................................34
Checking the Linearity ....................................................................................................................35
Checking the Absolute Accuracy ...................................................................................................37
Generating the Calibration Report...................................................................................................41
Suppressing the Rohde & Schwarz logo ........................................................................................42
Calculating a New EPROM File ........................................................................................................43
Overwriting the Data Memory of a Sensor with Flash EPROM .........................................................45
Archiving 46
Copying Files to Archive ..................................................................................................................46
Fetching Files from Archive ............................................................................................................47
4 Verification ............................................................................................................ 48
Verification of the R&S
®
NRPC Calibration Kit ................................................................................48
Built-In Self-Test of the Power Standard ........................................................................................48
Comparison Measurements with the R&S
®
NRPC-B1 Verification Set ..........................................48
5 Recalibration ........................................................................................................ 50
Procedures to be Performed after Recalibration ...........................................................................50
6 Appendix ............................................................................................................... 51
Exchanging the RF Connector on the Test Port of the Power Standard .....................................51
Measurements on a Separate Measurement Setup .......................................................................54
Reflection .......................................................................................................................................54
Program-Controlled Reflection Measurement with R&S
®
ZVX_RECAL ....................................54
Information about reflection measurements with R&S
®
ZVX_RECAL .......................................59
Contents R&S NRPC
1109.0930.32 - 14 5 E-14
Reflection measurement without using R&S
®
ZVX_RECAL ......................................................61
Configuration of the Network Analyzer .....................................................................................61
Formatting and Saving the Reflection Measured Values ..........................................................62
S-parameter file for sensors with attenuators ................................................................................68
Linearity 70
Absolute Accuracy ..........................................................................................................................72
Power Calibration for R&S®NRV and R&S
®
URV Sensors .............................................................75
R&S
®
NRV-Z2, -Z5, -Z8, -Z51 .........................................................................................................75
R&S
®
NRV-Z32 ...............................................................................................................................75
R&S
®
NRV-Z33, -Z53, -Z54 ............................................................................................................76
R&S
®
NRV-Z1, -Z4, -Z7, -Z31 .........................................................................................................76
R&S
®
URV5-Z2 ...............................................................................................................................77
R&S
®
URV5-Z4 ...............................................................................................................................77
R&S
®
URV5-Z7 ...............................................................................................................................78
R&S
®
NRV-Z52 ...............................................................................................................................78
R&S
®
NRV-Z6 .................................................................................................................................79
R&S
®
NRV-Z55 ...............................................................................................................................79
R&S
®
NRV-Z15 ...............................................................................................................................80
Linearity Calibration for R&S®NRV and R&S
®
URV Sensors .........................................................81
R&S
®
NRV Sensors ........................................................................................................................81
R&S
®
URV5 Sensors ......................................................................................................................81
Configuration of Power Meter NRVD ...............................................................................................82
Initializing the R&S
®
NRVD .............................................................................................................82
Operation of the R&S
®
NRVC Calibration Kit ..................................................................................84
Devices for the R&S
®
NRVC Calibration Kit ...................................................................................84
R&S
®
NRVD Dual-Channel Power Meter ..................................................................................84
Installing the remaining components of the R&S
®
NRVC ...............................................................84
Update Additional Data for the R&S
®
NRVC Calibration Kit ...........................................................85
Configuration of Power Meters with the R&S
®
NRVC Calibration Kit ........................................85
Verification of the R&S
®
NRVC Calibration Kit ................................................................................87
Comparison Measurements with the R&S
®
NRVC-B1 Verification Set ..........................................87
DC Voltage Tests with the R&S
®
NRVC Calibration Kit ..................................................................88
Additional measuring equipment required ................................................................................89
Measurement procedure ...........................................................................................................89
Measurement Uncertainty ................................................................................................................92
Calibration of Absolute Accuracy ...................................................................................................92
Linearity using the R&S
®
NRPC-LS linearity standard..................................................................107
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 6 E-14
1 General
Intended Use
The R&S®NRPC/NRVC Power Sensor Calibration Kits enable you to calibrate the power sensors of the
R&S®NRP family.
Connected between the RF output of a signal source and the sensor (DUT), you can use the calibration
kits to perform both, absolute accuracy and linearity calibration. A power meter indicates the power
standard output. The R&S®Recal+ software controls the calibration.
Key features
Various calibration kits are available for calibration of sensors depending on the frequency range. Calibration of the sensors is supported by the R&S®Recal+ software. All of the calibration kits are calibrated
in a traceable manner by Deutscher Kalibrierdienst laboratory D-K-15195-01-01. This laboratory is accredited by the Deutsche Akkreditierungsstelle GmbH for the relevant measured quantities (reflection,
equivalent reflection and RF power). The appendix to the accreditation certificate can be found on the
Internet at www.dakks.de.
The calibration kits support the following functions:
• Calibration of absolute accuracy for power sensors with N-50Ω, 3.5 mm, 2.92 mm, 2.4 mm, 1.85 mm
connectors from DC to max. 67 GHz
• Linearity calibration with a level range of −60 dBm to +35 dBm at 1 GHz
• Recording of the reflection with the additional program R&S®ZVX_RECAL
• Computation of new correction factors for the data memories based on the calibration data *)
• Rewriting to the data memories
• Report generation
*) For certain sensors (see Table 1-5 to Table 1-10), calibration is performed without rewriting the data
memory.
Note: This document refers to the R&S®NRPC18, R&S®NRPC33, R&S®NRPC40, R&S®NRPC50
and R&S®NRPC67 calibration kits using the general designation R&S®NRPC.
Description of the Calibration Kits
The R&S®NRPC calibration kits support the common connector types that are used in the frequency
range up to 67 GHz (Table 1-1).
Table 1-1 Calibration kits for absolute accuracy
Calibration kit
Connector type
Meas. level
Frequency range
R&S®NRPC18
N-50Ω
-20 dBm (10 µW) to +20 dBm (100 mW)
DC to 18 GHz
R&S®NRPC33
3.5 mm
-20 dBm (10 µW) to +20 dBm (100 mW)
DC to 33 GHz
R&S®NRPC40
2.92 mm
-20 dBm (10 µW) to +20 dBm (100 mW)
DC to 40 GHz
R&S®NRPC50
2.4 mm
-20 dBm (10 µW) to +20 dBm (100 mW)
DC to 50 GHz
R&S®NRPC67
1.85 mm
-20 dBm (10 µW) to +20 dBm (100 mW)
DC to 67 GHz
Calibration Kits for Power Sensors R&S NRPC
1109.0930.32 - 14 7 E-14
The R&S®NRPC-LS calibration kit supports the linearity check at 1 GHz (Table 1-2).
Table 1-2 Calibration kit for linearity
Calibration kit
Connector type
Meas. level
Frequency
R&S®NRPC-LS
N-50Ω
-60 dBm (1 nW) to +35 dBm (3 W)
1 GHz
The R&S®NRPC-B1 options are verification sets for the power standards in the R&S®NRPC calibration
kits. Each verification set contains a thermal sensor that is appropriate for the power standard (
Table 1-3).
Table 1-3 Options for the R&S®NRPC calibration kits
Option
Connector type
Function
Frequency range
R&S®NRPC18-B1
N-50Ω
For verification R&S®NRPC18
10 MHz to 18 GHz
R&S®NRPC33-B1
3.5 mm
For verification R&S®NRPC33
10 MHz to 33 GHz
R&S®NRPC40-B1
2.92 mm
For verification R&S®NRPC40
10 MHz to 40 GHz
R&S®NRPC50-B1
2.4 mm
For verification R&S®NRPC50
10 MHz to 50 GHz
R&S®NRPC67-B1
1.85 mm
For verification R&S®NRPC67
10 MHz to 67 GHz
Information about the R&S®NRPC Calibration Kit
The R&S®NRPC calibration kits use the technology in the R&S®NRP thermal sensors. The display of the
RF power measurand takes place here entirely in the sensor all the way through the numerical measurement result. The R&S®NRX base unit is used only to set the sensor parameters and to display the measured value computed in the sensor. In this manner, any influence of the power meter base unit on the
measured value is eliminated for the R&S®NRPC calibration kits. All of the necessary correction factors
including the S-parameters for the reference attenuator are saved in the power standard's data
memory .
Note: In the R&S®NRPC calibration kits, the power standards contain all of the necessary data
(correction and characteristic data).
Information about the R&S®NRVC Calibration Kit
The R&S®NRVC calibration kit is a discontinued product. The R&S®Recal+ software supports still the
use of the R&S®NRVC calibration kit (Table 1-4). The option R&S®NRVC-B1 is a verification set for the
power standard in the R&S®NRVC calibration kit. Each verification set contains two appropriate sensors
for the given power standard.
Table 1-4 Obsolete R&S®NRVC calibration kits
Option
Connector type
Function
Frequency range
R&S®NRVC
N-50Ω
-30 dBm (1 µW) to +20 dBm (100 mW)
DC to 18 GHz
R&S®NRVC-B1
N-50Ω
For verification R&S®NRVC
10 MHz to 18 GHz
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 8 E-14
Information and Instructions on Calibration
Warm-Up Time for Devices under Test (DUTs)
The sensors in the R&S®NRP and R&S®FSH family require a warm-up time of at least one hour after
startup to attain their operating temperature. If it is frequently necessary to calibrate a series of sensors,
let the uncalibrated sensors warm up while calibration is being performed on another one. In this application, they can be connected either to a multichannel R&S®NRX (option R&S®NRP-B2 and R&S®NRPB5) or to a PC, preferably via the four-channel R&S NRP-Z5 USB sensor hub (material number
1146.7740.02).
Simply connecting the sensor to the PC is not sufficient for warm-up; instead, the sensor processor, which
is the main source of heat for the sensor, must be placed in a typical operating state. For this to occur,
the sensor must be recognized by Windows after it is connected and properly numbered (entered in the
Windows device manager in the USB controller device group).
For numbering purposes, Windows always needs the associated device drivers that R&S provides with
the R&S®NRP Toolkit software. This software is supplied with all R&S NRP sensors and can also be
obtained from the Rohde & Schwarz website. For proper numbering of a sensor, R&S®NRP Toolkit must
be installed prior to connecting the sensor for the first time.
For the sensors in the R&S®NRV and R&S®URV5 family, it is adequate to wait for two minutes after
connection to the R&S®NRVD.
Reflection Measurement
A sensor's reflection must always measured from two perspectives. On the one hand, it is an important
device property. On the other hand, reflection data in complex notation can be used to reduce the measurement errors resulting from mismatching during calibration of absolute accuracy (see section “Checking
the Absolute Accuracy”). Reflection measurement is supported by the R&S®ZVX_RECAL additional program in conjunction with selected network analyzers from Rohde & Schwarz. In the appendix under
Measurements on a Separate Measurement Setup in the Reflection section, methods are described for
integrating reflection data from other network analyzers into the R&S®Recal+ software.
Calibration of Absolute Accuracy
Refreshing the Device under Test's Data Set
When absolute accuracy is checked, the DUT's power reading is compared with that of a power standard
over the DUT's entire frequency range. A tolerance test that is performed automatically by the R&S®Recal+ software provides an indication of whether the sensor can be considered to comply with the specifications at the time point of delivery at the individual frequency points.
In order to ensure compliance with specifications for the following calibration interval, it is necessary for
most sensors to also readjust the saved correction factors (calibration data) so that the errors that are
measured compared to the power standard will disappear. This can be achieved in a subsequent measurement. Devices under test calibrated/adjusted in this manner reliably conform to the uncertainties specified in the data sheet.
A few sensors are specified such that the compliance with specifications is basically ensured if the tolerance limits used in calibration of absolute accuracy are met. In this case, it is not necessary to rewrite the
correction factor memory (nor is it possible). In Table 1-5 to Table 1-10, these sensor types are indicated
accordingly in the Absolute accuracy / Adjustment column.
Calibration Kits for Power Sensors R&S NRPC
1109.0930.32 - 14 9 E-14
Gamma Correction
Correction of the mismatch between the device under test and the power standard ( correction for short)
generally reduces the influence of the mismatch by an order of magnitude. This correction is recommended in all cases, and it is even mandatory for some sensor types. These sensors are designated
accordingly in Table 1-5 to Table 1-10. correction is easy to activate via the user interface of the
R&S®Recal+ software, but it does require the availability of reflection values for the device under test in
complex notation. Reflection measurement is supported by the R&S®ZVX_RECAL additional program in
conjunction with selected network analyzers from Rohde & Schwarz.
R&S®NRP Sensors with Attenuator
Calibration is different with the R&S®NRP18S-10, -20, -25 and R&S®NRP-Z22, -Z23, -Z24 and -Z92 sensors which consist of a power sensor with an attenuator connected to the input. The attenuator is treated
as a connectable S-parameter device for which separate correction factors are present in the data
memory for the sensor. When these sensors are calibrated, the correction factors for the power sensor
as well as for the attenuator must be refreshed if the uncertainties specified for the combination thereof
are to be in conformance after the calibration.
Like all of the other R&S®NRP sensors, calibration of the power sensors is supported by the R&S®Recal+
software. However, calibration of the attenuators is not supported. Since the risk of significant measurement errors is much higher compared to power calibration, this should be handled only by experienced
personnel using suitable measurement setups. The section S-parameter file for sensors with attenuators
(see appendix under Measurements on a Separate Measurement Setup) contains further details.
Insight into whether the existing calibration values for the attenuator are roughly correct can be obtained
with a check measurement supported by the R&S®Recal+ software on the power sensor with the attenuator screwed on.
Diode Sensors in the R&S®NRV and R&S®URV5 Families
Some of these sensors require a power level of less than 10 µW for calibration of absolute accuracy.
Accordingly, it is necessary to connect the reference attenuator to the output of the power standard to
reduce the power level.
Linearity Calibration
For most DUTs, calibration of the linearity is used only to check that the sensor is functioning properly.
This means that the check for compliance with tolerance limits that is performed by the R&S®Recal+
software is fully adequate. In such cases, there is no need to refresh the set of correction factors (nor is
it possible).
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 10 E-14
Information about the Supported Sensors
Calibration of absolute accuracy with standard R&S®NRPC
Table 1-5 Power sensors supported by the R&S®NRPC18 calibration kit
Type (model)
Absolute accuracy
correction
Frequency range, DUT
(generator)
R&S®…
Adjustment
Check
Mandatory
NRP6A(N)
✓
✓
-
8 kHz to 6 GHz
NRP18A(N)
✓
✓
-
8 kHz to 18 GHz
NRP8S(N)
✓
✓
-
10 MHz to 8 GHz
NRP18S(N)
✓
✓
-
10 MHz to 18 GHz
NRP18T(N)
✓ ✓ ✓
10 MHz to 18 GHz
NRP18S-10/-20/-25
✓
✓
-
10 MHz to 18 GHz
FSH-Z1
✓
✓
-
10 MHz to 8 GHz
FSH-Z18
✓
✓
-
10 MHz to 18 GHz
NRP-Z11
✓
✓
-
10 MHz to 8 GHz
NRP-Z21/-Z22/-Z23/-Z24
✓
✓
-
10 MHz to 18 GHz
NRP-Z211
✓
✓
-
10 MHz to 8 GHz
NRP-Z221
✓
✓
-
10 MHz to 18 GHz
NRP-Z51 (02, 62)
✓
✓
-
10 MHz to 18 GHz
NRP-Z51 (03)
✓ ✓ ✓
10 MHz to 18 GHz
NRP-Z81
✓
✓
-
50 MHz to 18 GHz
NRP-Z91 (02, 04)
✓
✓
-
9 kHz to 6 GHz
NRP-Z91 (08)
- ✓ -
10 MHz to 8 GHz
NRP-Z92
✓
✓
-
9 kHz to 6 GHz
NRV-Z1/-Z2
✓
✓
-
10 MHz to 18 GHz
NRV-Z4/-Z5
✓
✓
-
100 kHz to 6 GHz
NRV-Z7/-Z8
✓
✓
-
10 MHz to 13 GHz
NRV-Z31/-Z32/-Z33
- ✓ -
30 MHz to 6 GHz
NRV-Z51 (02, 04)
✓
✓
-
10 MHz to 18 GHz
NRV-Z51 (06)
✓
✓
-
1 kHz to 6 GHz
NRV-Z53/-Z54
✓
✓
-
10 MHz to 18 GHz
NRV-Z53/-Z54
✓
✓
-
10 MHz to 18 GHz
NRV-Z1/-Z2
✓
✓
-
10 MHz to 18 GHz
Calibration Kits for Power Sensors R&S NRPC
1109.0930.32 - 14 11 E-14
Table 1-6 R&S®URV Voltage sensors supported by the R&S®NRPC18 calibration kit
Table 1-7 Power sensors supported by the R&S®NRPC33 calibration kit
Table 1-8 Power sensors supported by the R&S®NRPC40 calibration kit
Type (model)
Absolute accuracy
correction
Frequency range, DUT
(generator)
R&S®…
Adjustment
Check
Mandatory
URV5-Z2 (02, 05)
- ✓ -
9 kHz to 3 GHz
URV5-Z2 (04)
- ✓ -
9 kHz to 1 GHz
URV5-Z2 (55, 56)
- ✓ -
9 kHz to 2 GHz
URV5-Z4 (02, 05)
- ✓ -
100 kHz to 3 GHz
URV5-Z4 (04)
- ✓ -
100 kHz to 2 GHz
URV5-Z4 (55, 56)
- ✓ -
100 kHz to 2 GHz
URV5-Z5 (55)
✓
✓
-
10 MHz to 18 GHz
URV5-Z7
- ✓ -
20 kHz to 1 GHz
URY-Z2
- ✓ -
9 kHz to 2 GHz
URY-Z4
- ✓ -
100 kHz to 2 GHz
URY-Z7
- ✓ -
20 kHz to 1 GHz
Type (model)
Absolute accuracy
correction
Frequency range, DUT
(generator)
R&S®…
Adjustment
Check
Mandatory
NRP33S(N)(-V)
✓ ✓ ✓
10 MHz to 33 GHz
NRP33T(N)
✓ ✓ ✓
10 MHz to 33 GHz
NRP-Z31
✓ ✓ ✓
10 MHz to 33 GHz
NRP-Z52 (02, 62)
✓ ✓ ✓
10 MHz to 33 GHz
NRP-Z52 (18)
✓ ✓ ✓
10 MHz to 18 GHz
NRV-Z6
✓ ✓ ✓
50 MHz to 26.5 GHz
NRV-Z52
✓ ✓ ✓
10 MHz to 26.5 GHz
Type (model)
Absolute accuracy
correction
Frequency range, DUT
(generator)
R&S®…
Adjustment
Check
Mandatory
NRP40S(N)
✓ ✓ ✓
50 MHz to 40 GHz
NRP40T(N)
✓ ✓ ✓
10 MHz to 40 GHz
NRP-Z41
✓ ✓ ✓
50 MHz to 40 GHz
NRP-Z55
✓ ✓ ✓
10 MHz to 40 GHz
NRP-Z85
✓ ✓ ✓
50 MHz to 40 GHz
NRV-Z15
✓ ✓ ✓
50 MHz to 40 GHz
NRV-Z55
✓ ✓ ✓
10 MHz to 40 GHz
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 12 E-14
Table 1-9 Power sensors supported by the R&S®NRPC50 calibration kit
Table 1-10 Power sensors supported by the R&S®NRPC67 calibration kit
Calibration of linearity with standard R&S®NRPC-LS
The R&S®NRPC-LS calibration kit allows the check of all R&S power sensors (see Table 1-5 to Table
1-10) at a calibration frequency of 1 GHz.
Mostly, the power sensors are only checked and can not be adjusted. In case of the wideband sensors
R&S®NRP-Z81, -Z85 and -Z86 also an adjustment can be performed.
Type (model)
Absolute accuracy
correction
Frequency range, DUT
(generator)
R&S®…
Adjustment
Check
Mandatory
NRP50S(N)
✓ ✓ ✓
50 MHz to 50 GHz
NRP50T(N)
✓ ✓ ✓
10 MHz to 50 GHz
NRP-Z61
✓ ✓ ✓
50 MHz to 50 GHz
NRP-Z56
✓ ✓ ✓
10 MHz to 50 GHz
NRP-Z86 (40)
✓ ✓ ✓
50 MHz to 40 GHz
NRP-Z86 (44)
✓ ✓ ✓
50 MHz to 44 GHz
Type (model)
Absolute accuracy
correction
Frequency range, DUT
(generator)
R&S®…
Adjustment
Check
Mandatory
NRP67S(N)(-V)
✓ ✓ ✓
50 MHz to 67 GHz
NRP67T(N)
✓ ✓ ✓
10 MHz to 67 GHz
NRP-Z57
✓ ✓ ✓
10 MHz to 67 GHz
Calibration Kits for Power Sensors R&S NRPC
1109.0930.32 - 14 13 E-14
2 Putting into Operation
Unpacking the Unit
Check the delivery to ensure that it is complete and that there are no signs of damage. If any damage is
present, inform the carrier immediately and keep the packaging to support any subsequent claims.
R&S®NRPC18 and R&S®NRPC18-B1
The R&S®NRPC18 calibration kit is supplied together with the R&S®NRPC18-B1 option in a storage case
(Fig. 2-1 and Table 2-1).
Fig. 2-1 R&S®NRPC18 calibration kit
Table 2-1 Individual parts in the R&S®NRPC18 calibration kit
Item
no.
Designation
Material number
Power standard
1418.0948.03
20 dB reference attenuator
1109.0898.00
CD with manual, program and data
1109.0769.00
Microwave connecting cable N (male) – N (male)
1306.4620.00
Precision 50 termination
1418.1109.02
Adapter N (male) to BNC (male)
0351.7286.00
Adapter cable for connecting R&S®FSH-Z… sensors to the
R&S®NRP (not shown)
1155.4940.00
Torque wrench (not shown)
1311.8242.04
Option: R&S®NRPC18-B1 verification kit
1418.0954.03
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 14 E-14
R&S®NRPC33 and R&S®NRPC33-B1
The R&S®NRPC33 calibration kit is supplied together with the R&S®NRPC33-B1 option in a storage case
(Fig. 2-2 and Table 2-2).
Fig. 2-2 R&S®NRPC33 calibration kit
Table 2-2 Individual parts in the R&S®NRPC33 calibration kit
Item
no.
Designation
Material number
Power standard
1418.0660.03
20 dB reference attenuator
1418.0731.00
CD with manual, program and data
1109.0769.00
Microwave connecting cable PC2.92 (male) – PC2.92 (male)
1159.6602.02
Replacement adapter PC2.4 (male) – PC3.5 (female) for the test
port
1418.0902.00
Adapter for linearity N (male) – SMA (female)
4012.5837.00
Torque wrench
1311.8213.02
Option: R&S®NRPC33-B1 verification kit
1418.0683.03
Calibration Kits for Power Sensors R&S NRPC
1109.0930.32 - 14 15 E-14
R&S®NRPC40 and R&S®NRPC40-B1
The R&S®NRPC40 calibration kit is supplied together with the R&S®NRPC40-B1 option in a storage case
(Fig. 2-3 and Table 2-3).
Fig. 2-3 R&S®NRPC40 calibration kit
Table 2-3 Individual parts in the R&S®NRPC40 calibration kit
Item
no.
Designation
Material number
Power standard
1159.6625.03
20 dB reference attenuator
1159.6654.00
CD with manual, program and data
1109.0769.00
Microwave connecting cable PC2.92 (male) – PC2.92 (male)
1159.6602.00
Replacement adapter PC2.4 (male) – PC2.92 (female) for the
test port
1418.0919.00
Adapter N (male) – SMA (female)
4012.5837.00
Torque wrench
1311.8213.02
Option: R&S®NRPC40-B1 verification kit
1159.6819.03
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 16 E-14
R&S®NRPC50 and R&S®NRPC50-B1
The R&S®NRPC50 calibration kit is supplied together with the R&S®NRPC50-B1 option in a storage case
(Fig. 2-4 and Table 2-4).
Fig. 2-4 R&S®NRPC50 calibration kit
Table 2-4 Individual parts in the R&S®NRPC50 calibration kit
Item
no.
Designation
Material number
Power standard
1159.6725.03
CD with manual, program and data
1109.0769.00
Microwave connecting cable PC2.4 (male) – PC2.4 (male)
1159.6619.00
Replacement adapter PC2.4 (male) – PC2.4 (female) for the test
port
1418.0925.00
Adapter N (male) – PC2.4 (female)
1159.6919.00
Torque wrench
1311.8213.02
Option: R&S®NRPC50-B1 verification kit
1159.6890.03
Calibration Kits for Power Sensors R&S NRPC
1109.0930.32 - 14 17 E-14
R&S®NRPC67 and R&S®NRPC67-B1
The R&S®NRPC67 calibration kit is supplied together with the R&S®NRPC67-B1 option in a storage case
(Fig. 2-5 and Table 2-5).
Fig. 2-5 R&S®NRPC67 calibration kit
Table 2-5 Individual parts in the R&S®NRPC67 calibration kit
Item
no.
Designation
Material number
Power standard
1418.1573.02
CD with manual, program and data
1109.0769.00
Microwave connecting cable PC1.85 (male) - PC1.85 (male)
1306.4736.00
Replacement adapter PC1.85 (male) – PC1.85 (female) for the
test port
1418.1767.00
Adapter N (male) – PC2.4 (female)
1159.6919.00
Torque wrench
1311.8213.02
Option: R&S®NRPC67-B1 verification kit
1418.1550.02
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 18 E-14
R&S®NRPC-LS
Fig. 2-6 R&S®NRPC-LS Linearity Standard
Table 2-6 Ordering information for NRPC-LS calibration kit
Item
no.
Designation
Material number
Linearity standard
1421.7004.02
Calibration Kits for Power Sensors R&S NRPC
1109.0930.32 - 14 19 E-14
Additional Hardware Requirements
Several additional devices that are not included in the delivery are required in order to perform calibrations:
Required devices for operation of an R&S®NRPC:
• Controller (PC) with IEC/IEEE bus interface from National Instruments
• R&S®NRP-ZK6, -ZK8 interface cable
• R&S®NRX power meter with options B1 and K2, respectively
• Generator for calibration of absolute accuracy and linearity
• Vector network analyzer for calibration of matching
• Calibration kit for calibration of network analyzer
The following sections provide detailed descriptions of the devices listed above.
Devices for the R&S®NRPC Calibration Kit
Controller
The entire calibration procedure, i.e. recording measured values, setting the generators and reading from
and writing to the calibration data memory, is remote-controlled from a PC. The hardware requirements
(clock frequency, RAM, hard disk space) are not critical; the operating system must be Microsoft Windows® 10.
Also required is a National Instruments IEC/IEEE bus interface which can run under the installed operating system and act as the interface to the measuring instruments. Before using the calibration kit for the
first time, test the installation of the IEC/IEEE bus card with the tools supplied by the manufacturer ( ib-
conf, ibdiag, etc.).
R&S®NRP-ZK6, -ZK8 interface cable
For the R&S®NRPxxS/SN and R&S®NRPxxT/TN power sensors an R&S®NRP-ZK6 or R&S®NRP-ZK8
(Table 2-7) interface cable is mandatory.
Table 2-7 Interface Cable for R&S®NRPxxS/SN power sensors
Type
Option
Material number
R&S®NRP-ZK6
length: 1.5 m
1419.0664.02
length: 3 m
1419.0664.03
length: 5 m
1419.0664.04
R&S®NRP-ZK8
length: 1.5 m
1424.9408.02
length: 3 m
1424.9408.03
length: 5 m
1424.9408.04
R&S®NRX Power Meter
For operation of the R&S®Recal+ calibration software in conjunction with an R&S®NRPC power standard, an R&S®NRX power meter is mandatory.
This device also needs to be fitted with option R&S®NRX-B1, a 50 MHz/1GHz sensor check source, so
that a quick check of the sensors can be performed before calibration is started. In order for the
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 20 E-14
R&S®Recal+ calibration software to function properly, the appropriate firmware version
must be installed in the R&S®NRX. The firmware must be replaced if the displayed version
number is less than 02.31.
Table 2-8 Ordering information for the R&S®NRX power meter
Type
R&S®NRX
Power unit
Option: R&S®NRX-B1
Sensor check source
Option: R&S®NRX-K2
2nd measurement
channel
Option: R&S®NRX-B4
3rd and 4th sensor inputs (C, D)
Material number
1424.7005.02
1424.7805.02
1424.9208.02
1424.8901.02
Generators for Calibration of Absolute Accuracy
The required characteristics depend on the frequency measurement range and the power measurement
range of the DUT (Table 1-5 to Table 1-10). The generator that is selected must cover the entire frequency
range. Table 2-9 shows a selection of generators from the current R&S product line that are recommended for operation of the R&S®NRPC calibration kit. This selection makes it possible to cover a wide
frequency range with only a few types.
We recommend the generator R&S®SMA100B with option R&S®SMA100B-B120 since it can be used for
calibration of absolute accuracy as well as linearity.
Older generators supported by the R&S®Recal+ software are listed in
Table 2-11.
Table 2-9 Supported generators in the current product range
f range, DUT
Generator type + options
≥ 8 kHz to
≤ 6 GHz
≥ 8 kHz to
≤ 18 GHz
≥ 10 MHz to
≤ 18 GHz
≥ 10 MHz to
≤ 40 GHz
≥ 10 MHz to
≤ 50 GHz
≥ 10 MHz to
≤ 67 GHz
R&S®SMA100B*
+ options R&S®SMAB-B106,
R&S®SMAB-K31,
R&S®SMAB-B32
✓
R&S®SMA100B*
+ options R&S®SMAB-B120,
R&S®SMAB-K33,
R&S®SMAB-B34
✓ ✓ ✓
R&S®SMA100B
+ option R&S®SMAB-B140
✓ ✓ ✓
✓
R&S®SMA100B
+ options R&S®SMAB-B150,
R&S®SMAB-B37
✓ ✓ ✓ ✓ ✓
R&S®SMA100B
+ options R&S®SMAB-B167,
R&S®SMAB-B39
R&S®SMAB-K40
✓ ✓ ✓ ✓ ✓
✓
R&S®SMB100A
+ options -B120, -B31 **
✓
R&S®SMB100A
+ options -B140, -B32
✓
✓
* The options “High output power” (R&S®SMAB-K31, R&S®SMAB-K33) and “Ultra high output power”
(R&S®SMAB-B32, R&S®SMAB-B34) are necessary only for calibration of the linearity. It is recommended to select
this option.
Calibration Kits for Power Sensors R&S NRPC
1109.0930.32 - 14 21 E-14
** The option R&S
®
SMB-B31 is necessary only for calibration of the R&S®NRV-Z53/-Z54 power sensors.
Table 2-10 Ordering information for the generators in the current R&S product range
Type
Material number
Options
Material number
for option
R&S®SMA100B
1419.8888.02
6 GHz
R&S®SMAB-B106
R&S®SMAB-K31
R&S®SMAB-B32
1420.8588.02
1420.7100.02
1420.7200.02
20 GHz
R&S®SMAB-B120
R&S®SMAB-K33
R&S®SMAB-B34
1420.8788.02
1420.7300.02
1420.7400.02
40 GHz
R&S®SMAB-B140
1420.8988.02
50 GHz
R&S®SMAB-B150
R&S®SMAB-B37
1420.9049.02
1420.7700.02
67 GHz
R&S®SMAB-B167
R&S®SMAB-B39
R&S®SMAB-K40
1420.9149.02
1420.7900.02
1420.9278.02
R&S®SMB100A
1406.6000.02
20 GHz
R&S®SMB-B120
R&S®SMB-B31
1407.2209.02
1407.1260.02
40 GHz
R&S®SMB-B140
R&S®SMB-B32
1407.2309.02
1407.1360.02
Table 2-11 Supported generators that are no longer available
f range, DUT
≥ 9 kHz to
≤ 3 GHz
≥ 9 kHz to
≤ 6 GHz
≥ 10 MHz to
≤ 18 GHz
≥ 10 MHz to
≤ 26.5 GHz
≥ 10 MHz to
≤ 33 GHz
≥ 10 MHz to
≤ 40 GHz
Generator type
R&S®SML03, R&S®SMV03
✓
R&S®SME06, R&S®SMT06
✓
✓
R&S®SMB100A
+ option -B106
✓
✓
R&S®SMR20
✓
R&S®SMR27/30
✓
(✓)
R&S®SMR40
✓
(✓) (✓) *
R&S®SMP02/22
✓
R&S®SMP03
✓
✓
R&S®SMP04
✓ ✓ ✓
(✓) *
R&S®SMF100A
+ options -B144, -B2, -B27,
+ option –B34
✓ ✓ ✓
* Only suitable for calibration R&S®NRV-Z6/-Z15.
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 22 E-14
Generators for Calibration of Linearity
R&S®SMA100B Generator is mandatory for linearity measurements by R&S®Recal+ with the
R&S®NRPC-LS calibration kit. All R&S power sensors (see Table 1-5 to Table 1-10) are measured at a
calibration frequency of 1 GHz.
The R&S®SMA100B with frequency option up to 20 GHz and with output power options “High output
power” and “Ultra high output power” is excellent suitable for calibration of linearity (Table 2-9).
Vector Network Analyzers for Calibration of Matching
The required characteristics are focused primarily on the frequency range and connector used by the
DUT (Table 1-5 to Table 1-10). Its lower frequency limit is less important since R&S sensors at least do
not exhibit any significant changes in the matching at lower frequencies. Accordingly, a standard lower
frequency limit of 10 MHz can be assumed when selecting an appropriate analyzer.
Table 2-12 shows a group of network analyzers selected based on this perspective where the objective
is to cover a very large frequency range with very few types. Only these analyzers along with those listed
in Table 2-13 which are no longer sold are currently supported by the R&S®Recal+ calibration software
and the R&S®ZVX_RECAL additional program. Of course, it is also possible to use other network analyzers. However, the user must take care to ensure that the appropriate frequency points are measured
and the calibration results are made available in the necessary file format (see appendix under Measure-
ments on a Separate Measurement Setup in the Matching section, Separate recording of the matching).
For calibration of the supported network analyzers, the calibration kits listed in Table 2-15 are recommended. For sensors with a 3.5 mm connector, the R&S®ZV-Z235 standard kit with a frequency range of
24 GHz is not adequate. Instead, the “E” version must be used. It is specified for use up to 33 GHz.
Note: For the sake of traceability and higher accuracy, German Accreditation Body (DAkkS) cali-
bration is recommended at the laboratory D-K-15195-01-01 operated by Rohde & Schwarz.
The German Accreditation Body calibration must generally be ordered separately. It is in-
cluded with the item only for the R&S®ZV-Z235E and R&S®NRPC calibration kits.
Table 2-12 Supported network analyzers in the current product range
f range, DUT
Type
≥ 8 kHz to
≤ 6 GHz
≥ 8 kHz to
≤ 18 GHz
≥ 10 MHz to
≤ 18 GHz
≥ 10 MHz to
≤ 40 GHz
≥ 10 MHz to
≤ 50 GHz
≥ 10 MHz to
≤ 67 GHz
R&S®ZNB8
✓ *
R&S®ZNB20
✓ *
✓ * ✓
R&S®ZNB40
✓ *
✓ *
✓
✓
R&S®ZVA24
✓
R&S®ZVA40
✓
✓
R&S®ZVA50
✓
✓
✓
R&S®ZVA67
✓ ✓ ✓
✓
* A VNA with a lower frequency limit of 9 kHz is sufficient. The calibration software extrapolates the 8 kHz
Matching value.
Calibration Kits for Power Sensors R&S NRPC
1109.0930.32 - 14 23 E-14
Table 2-13 Supported network analyzers which are no longer available
Type
R&S®… calibration kit used for power calibration
NRPC18
NRPC33
NRPC40
NRPC50
R&S®ZVM
✓
R&S®ZVB20
✓
R&S®ZVK
✓
✓
✓
Table 2-14 Ordering information for network analyzers
Type
Material number
Comments
R&S®ZNB8
1311.6010.42
Versions with four ports
are also supported
R&S®ZNB20
1311.6010.62
R&S®ZNB40
1311.6010.72
R&S
®
ZVA24
1145.1110.24
R&S
®
ZVA40
1145.1110.40
R&S
®
ZVA50
1145.1110.50
R&S
®
ZVA67
1305.7002.02
Table 2-15 Recommended calibration kits for network analyzers
Connector
N-50
3.5 mm
2.92 mm
2.4 mm
1.85 mm
Frequency
range
DC to 18 GHz
DC to 33 GHz
DC to 40 GHz
DC to 50 GHz
DC to 67 GHz
Type
R&S®ZV-Z270
R&S®ZV-Z235E
R&S®ZN-Z229
R&S®ZN-Z224
R&S®ZN-Z218
Table 2-16 Ordering information for calibration kits
Type
Material number
Comments
R&S
®
ZV-Z270
5011.6536.02
German Accreditation Body (DAkkS) calibration must
be ordered separately
R&S
®
ZV-Z235E
5011.6707.02
German Accreditation Body (DAkkS) calibration included
R&S
®
ZN-Z229
1336.7004.02
German Accreditation Body (DAkkS) calibration must
be ordered separately
R&S
®
ZN-Z224
1339.5002.02
German Accreditation Body (DAkkS) calibration must
be ordered separately
R&S
®
ZN-Z218
1337.3502.02
German Accreditation Body (DAkkS) calibration must
be ordered separately
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 24 E-14
Power Calibration for R&S®NRP Sensors
Power calibration of the older R&S®NRV and R&S®URV Sensors are shown in the Appendix, s. Power
Calibration for R&S®NRV and R&S®URV Sensors.
R&S®NRP Sensors 10 MHz (8 kHz) up to 18 GHz
Fig. 2-7 to Fig. 2-8 show the measurement setups used for calibration of absolute accuracy with the
R&S®NRPC18 calibration kit.
Fig. 2-7
Measurement setup for calibrating absolute accuracy for the
R&S®NRP power meter family.
(Start frequency 8 kHz only using
generator R&S®SMA100B.)
• For the R&S®NRPxxS(N), R&S®NRPxxT(N) and R&S®NRPxxA(N) power sensors an R&S®NRP-
ZK6, -ZK8 interface cable as well as an R&S®NRX power meter is mandatory.
• The generator R&S®SMA100B covers the entire frequency range of 8 kHz up to 18 GHz. In this
case the R&S®NRP18A(N) average power sensor can be calibrated.
• Depending on the generator used, an adapter for connecting the RF cable may be required.
R&S®FSH-Z1, -Z18
Fig. 2-8
Measurement setup for calibrating absolute accuracy for the
R&S®FSH-Z1, -Z18.
• Adapter cable is necessary for connecting the sensor to the R&S®NRX.
• Depending on the generator used, an adapter for connecting the RF cable may be required.
Calibration Kits for Power Sensors R&S NRPC
1109.0930.32 - 14 25 E-14
R&S®NRP Sensors up to 33 GHz
Fig. 2-9 shows the measurement setups used for calibration of absolute accuracy with the R&S®NRPC33
calibration kit.
Fig. 2-9
Measurement setup for calibrating absolute accuracy for the
R&S®NRP power meter family.
• For the R&S®NRPxxS/SN and R&S®NRPxxT/TN power sensors an R&S®NRP-ZK6, -ZK8 inter-
face cable as well as an R&S®NRX power meter is mandatory.
• Depending on the generator used, an adapter for connecting the RF cable may be required.
R&S®NRP Sensors up to 40 GHz
Fig. 2-10 shows the measurement setups used for calibration of absolute accuracy with the
R&S®NRPC40 calibration kit.
Fig. 2-10
Measurement setup for calibrating absolute accuracy for the
R&S®NRP power meter family.
• For the R&S®NRPxxS/SN and R&S®NRPxxT/TN power sensors an R&S®NRP-ZK6 interface ca-
ble as well as an R&S®NRX power meter is mandatory.
• Depending on the generator used, an adapter for connecting the RF cable may be required.
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 26 E-14
R&S®NRP Sensors up to 50 GHz
Fig. 2-11 shows the measurement setup used for calibration of absolute accuracy with the R&S®NRPC50
calibration kit.
Fig. 2-11
Measurement setup for calibrating absolute accuracy for the
R&S®NRP power meter family.
• For the R&S®NRPxxS/SN and R&S®NRPxxT/TN power sensors an R&S®NRP-ZK6, -ZK8 inter-
face cable as well as an R&S®NRX power meter is mandatory.
• Depending on the generator used, an adapter for connecting the RF cable may be required.
R&S®NRP Sensors up to 67 GHz
Fig. 2-12 shows the measurement setup used for calibration of absolute accuracy with the R&S®NRPC67
calibration kit.
Fig. 2-12
Measurement setup for calibrating absolute accuracy for the
R&S®NRP power meter family.
• For the R&S®NRPxxS/SN and R&S®NRPxxT/TN power sensors an R&S®NRP-ZK6, -ZK8 inter-
face cable as well as an R&S®NRX power meter is mandatory.
• Depending on the generator used, an adapter for connecting the RF cable may be required.
Calibration Kits for Power Sensors R&S NRPC
1109.0930.32 - 14 27 E-14
Linearity Calibration for R&S®NRP Sensors
R&S®NRP Sensors
NRX
Generator
Adapter
NRPC67
DUT
NRPC-LS
RF Cable
10 MHz
reference
Fig. 2-13
Measurement setup for linearity calibration for R&S®NRP power meter
family.
• R&S®SMA100B is recommended for calibration of linearity.
• The internal reference oscillator of the generator (10 MHz) has to be connected with the reference
clock of the R&S®NRPC-LS for synchronization.
• For the R&S®NRPC-LS an R&S®NRP-ZK6, -ZK8 interface cable is mandatory.
• For the R&S®NRPxxS(N), R&S®NRPxxT(N) and R&S®NRPxxA(N) power sensors an R&S®NRP-
ZK6, -ZK8 interface cable as well as an R&S®NRX power meter is mandatory.
• To allow connection of DUTs with 3.5 mm connectors, the R&S®NRPC33 calibration kits include
adapter .
• To allow connection of DUTs with 2.92 mm connectors, the R&S®NRPC40 calibration kits include
adapter .
• To allow connection of DUTs with 2.4 mm connectors, the R&S®NRPC50 calibration kit includes
adapter .
• To allow connection of DUTs with 1.85 mm connectors, the R&S®NRPC67 calibration kit includes
adapter .
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 28 E-14
3 Sensor Calibration
Preparation
Installing the R&S®Recal+ Calibration Software on the Hard Disk
The R&S®Recal+ software for the R&S®NRPC calibration kits is on the program CD and must be
installed on the controller’s hard disk before the calibration kit is used for the first time. Installation is
handled on an interactive basis by executing Recal+_Setup_<>.msi (e.g. Recal+_Setup_5.00.msi).
The R&S®Recal+ program group and the corresponding directory structure will be created automatically.
Note: First generation of R&S®NRPC-LS (with power spliter, with DC Input Port) only supported
by R&S®Recal+ Version 4.02 and Version 4.03.
Second generation of R&S®NRPC-LS (with directional coupler, without DC Input Port) only
supported by R&S®Recal+ Version 5.00 and higger.
Installing the R&S®ZVX_RECAL Additional Program on the Hard Disk
The R&S®ZVX_RECAL additional program allows reflection measurements under program control using
the R&S®Recal+ software in conjunction with selected network analyzers from Rohde & Schwarz. It is
also found on CD-ROM . Installation is handled interactively by executing the file setup.exe. After the
program is successfully installed, the dialog box Measurement with NRPC (after pressing the button
) should have the Reflection / S Parameter tab (Fig. 6-3). From there, the network analyzer and DUT
are selected and the test program is launched.
Starting the Calibration Software
➢ Start the calibration software by double-clicking the following icon
on the desktop or the entry in the corresponding program group in the Windows Start menu.
When R&S®Recal+ is called for the first time, some variables are not yet defined. Accordingly, follow the
prompt to enter the name and address of the calibration laboratory, initialize the measuring equipment,
etc. The required steps are described in detail in the sections below. All entries are stored in the
Calibration Kits for Power Sensors R&S NRPC
1109.0930.32 - 14 29 E-14
recal32.ini initialization file in the Windows directory and are applied automatically when R&S®Recal+ is
called again. They can be updated when necessary by using the Options... menu.
Entering the Name and Address of the Calibration Laboratory
➢ Enter the required information in the General Sensor Data dialog box:
• Name of the calibration laboratory (max. 20 characters)
• Name of the person carrying out the calibration: Up to 5 persons (max. 20 characters per entry).
To enter a new name, mark the name currently displayed, overwrite it and complete the entry by
pressing the Enter key. Use the Delete button to delete individual names
• Name of the company to which the calibration laboratory belongs (max. 40 characters)
• Company address (max. 40 characters)
➢ Press the OK button. For subsequent modifications, use the General Sensor Data... dialog box in
the Options menu
Defining Directories
After correct installation, the subdirectories shown below should have been created. Confirm the settings
by pressing the OK button or select other subdirectories by using the Browse... buttons.
Press the OK button. For subsequent modifications, use the Directories... dialog box in the Options
menu.
R&S NRPC Calibration Kits for Power Sensors
1109.0930.32 - 14 30 E-14
Initializing the Measuring Equipment
All remote-controlled measuring devices (R&S®NRX, generator for calibration of absolute accuracy, generator for linearization and vector network analyzer) must be initialized before any measurements are
made.
➢ Connect these devices via the IEC/IEEE bus to the controller and switch them on
Configuration of Power Meters with the R&S®NRPC Calibration Kit
Operating an R&S®NRPC calibration kit requires at least one R&S®NRX base unit to which the power
standards and sensors in the R&S®NRP and R&S®FSH-Z families can be connected. For calibration of
sensors in the R&S®NRV-Z and R&S®URV5-Z series, an R&S®NRVD base unit is also necessary. Overall, two base units can be controlled. The DUT must be connected to Channel A or Channel B of the Basic
Power Meter and the power standards can be connected to all available channels. The following tables
show the possible combinations:
Basic Power Meter
Meter 2**
R&S®NRX
R&S®NRX
Channel A (B)
Channel B (A)
Channel C / D*
Channel A / B / C / D*
DUT (R&S®NRP /
R&S®FSH-Z)
R&S®NRPC
R&S®NRPC
R&S®NRPC
* Availability depends on the configuration of the R&S®NRX.
** Necessary if more power standards from the R&S®NRPC calibration kits are to be connected.
➢ Regardless of the selected combination, the R&S®NRPC reinitializes prior to calibration of a sensor.
After pressing the Add data ... (Error! Reference source not found.) button, information is provided for each R&S®NRPC that was used in the last calibration. After changing the power standard,
this information is not updated immediately. Instead, it is updated after launching a new measure-
ment (button ).
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