Rohde & Schwarz R&S ZN-Z3x User manual

R&S®ZN-Z3x
Inline Calibration System
User Manual
User Manual
1177.6381.02 ─ 03
(;ÛÍß2)

This manual describes the Inline Calibration System R&S®ZN-Z3x, comprising
the following components:
●R&S®ZN-Z30 "Inline Calibration Controller", order no. 1328.7609.02
●R&S®ZN-Z32 "Inline Calibration Unit 8.5 GHz", order no. 1328.7638.02
●R&S®ZN-Z33 "Inline Calibration Unit 40 GHz", order no. 1328.7644.02
●R&S®ZN-Z33 "Inline Calibration Unit 40 GHz, Var. 03 (TVAC)", order no.
1328.7644.03
●R&S®ZN-CAN025 "CAN-bus control cable (baked out), 0.25 m", order no.
1339.3622.02
●R&S®ZN-CAN2 "CAN-bus control cable (baked out), 2 m", order no.
1339.3639.02
●R&S®ZN-CAN10 "CAN-bus control cable (baked out), 10 m", order no.
1339.3654.02
●R&S®ZN-CANA "CAN-bus adapter cable (baked out), 0.25 m", order no.
1339.3651.02
The software contained in this product uses several valuable open source software packages. For infor-
mation, see the "Open Source Acknowledgment" on the user documentation CD-ROM (included in deliv-
ery).
Rohde & Schwarz would like to thank the open source community for their valuable contribution to embed-
ded computing.
© 2017 Rohde & Schwarz GmbH & Co. KG
Mühldorfstr. 15, 81671 München, Germany
Phone: [phone] - 0
Fax: [phone]
Email: [email protected]
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, products from Rohde & Schwarz are indicated without the ® symbol, e.g.
R&S®ZN-Z3x is abbreviated as R&S ZN-Z3x

Contents
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Contents
1 Introduction............................................................................5
2 Putting the System into Operation.......................................9
3 Application........................................................................... 23
4 Operation..............................................................................25
5 Maintenance......................................................................... 47
6 ZN-Z3x User Tool................................................................. 51
List of Commands............................................................... 59
Index..................................................................................... 61

Contents
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Introduction
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1 Introduction
The measurement accuracy of a Vector Network Analyzer (VNA) heavily depends
on a careful user calibration. Any deviation of the test setup after the calibration
process inevitably produces errors. In case of a massive system error correction
(e.g. if long RF cables with high damping or switch matrices are used), those
deviations can lead to strongly altered measurement results. Especially in remote
scenarios such as multiport measurements, a re-calibration using traditional cali-
bration kits or calibration units is a costly and time consuming process.
The Rohde & Schwarz Inline Calibration System R&S ZN-Z3x allows re-calibrat-
ing a running measurement setup without mechanically changing the measure-
ment setup. For each DUT port an Inline Calibration Unit (ICU) is inserted
between the corresponding VNA test port and the DUT. The ICU remains within
the signal path throughout the measurement (low-loss through path) and, on
request of the VNA, performs a full one-port calibration (OSM) in-situ.
In order to perform full multiport measurements an initial calibration of the system
has to be done.
Figure 1-1: Inline Calibration Unit
Control connections are established via a central Inline Calibration Controller
(ICC) with
●2 CAN bus interfaces towards the ICUs
●LAN and USB interface for remote control

Introduction
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Figure 1-2: Inline Calibration Controller
With respect to control, the ICC shall act as the master for the connected ICUs.
However, in order to avoid unnecessary polling of data that might not have
changed (e.g. the temperature of the ICUs) the ICUs themselves are able to send
data autonomously. The CAN protocol supports this kind of multi-master opera-
tion.

Introduction
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1.1 System Overview
An Inline Calibration System R&S ZN-Z3x consists of an Inline Calibration Con-
troller R&S ZN-Z30 (order no. 1328.7609.02) and one or more Inline Calibration
Units R&S ZN-Z32/Z33, interconnected via CAN bus.
Table 1-1: Inline Calibration Units
Product Number Name Order No.
R&S®ZN-Z32 RF Inline Calibration Unit,
10 MHz to 8.5 GHz
1328.7638.02
R&S®ZN-Z33 MW Inline Calibration Unit,
10 MHz to 40 GHz
1328.7644.02
R&S®ZN-Z33 Var. 03 (TVAC) MW Inline Calibration Unit,
10 MHz to 40 GHz
1328.7644.03
CAN bus systems are well established in automotive environments and
have proven a high degree of robustness.
The Inline Calibration Controller (ICC) offers two CAN bus interfaces and is able
to control and power supply up to 24 Inline Calibration Units per CAN bus. The
ICC itself can be controlled via LAN or USB.
For technical details see the R&S ZN-Z3x data sheet.
System Overview

Introduction
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1.2 About this Manual
The user manual contains the "getting started" chapters as well as descriptions of
all instrument functions and of the remote control of the instrument. In addition, it
contains notes on preventative maintenance for the R&S ZN-Z3x and on trouble-
shooting on the basis of the warnings and error messages that the instrument
emits.
The user manual is organized into the following chapters:
●Putting the Instrument into Operation
●Application
●Operation (via Remote Control)
●Maintenance
●Appendix
The most recent version is always available on the Internet.
About this Manual

Putting the System into Operation
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2 Putting the System into Operation
An Inline Calibration System R&S ZN-Z3x consists of a Inline Calibration Control-
ler R&S ZN-Z30 and one or more Inline Calibration Units R&S ZN-Z32/Z33.
The sections below describe how to put the system into operation and how to
establish the required control connections between the system components. Gen-
eral notes are provided to ensure safety while operating the system.
2.1 Inline Calibration Controller Tour
This chapter shows all control elements and connectors on the front and rear
panel of the Inline Calibration Controller R&S ZN-Z30.
2.1.1 Front Panel
The front panel of the Inline Calibration Controller is shown on the photo below.
Brief explanations on the controls and connectors can be found on the following
pages.
Inline Calibration Controller Tour

Putting the System into Operation
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Mini display
The R&S ZN-Z30 offers an OLED status display which provides the following
information:
●serial number
●IP-address
●CAN bus 1,2: number of connected Inline Calibration Units, bus status (see
ICC:CAN<bus>:GET:STATe? on page 36)
Note that in certain error states the ICC may not be able to detect the number
of connected ICUs.
●Status of Inline Calibration Controller: "OK" or "Error 6" (configuration corrup-
ted)
If "STAT | Error 6" persists the Inline Calibration Controller has to be
returned to Rohde & Schwarz service.
Display Reset
The Display Reset key deactivates the screensaver.
Status LEDs
●Power: green = ready, red = standby; see Chapter 2.3.4, "Turning the ICC On
and Starting", on page 17
●LAN: green = OK, red = not OK or booting
●USB: green = connected, red = not connected
Standby key
The key serves two purposes:
●Toggle between standby and ready state; see Chapter 2.3.4, "Turning the ICC
On and Starting", on page 17.
When the instrument is powered up it comes up in ready state.
Inline Calibration Controller Tour