This document contains all system specific information that is necessary to operate and maintain the
TS8977 Test System.
The test system supports numerous RF test cases, based on test methods defined in the EN 302-544
Part 2 and EN 302-623: “Harmonized EN for TDD User Equipment covering essential requirements of
article 3.2 of the R&TTE Directive”. These test methods can be executed with defined set of
parameters, being compliant to the relevant sections of the EN 302-544 respective EN 302 623 test
specification. However, the free selection of parameters in order to define customer specific R&D test
scenarios is supported as well.
The test system is designed to perform RF tests for WiMAX subscriber (mobile) stations. The system
support following WiMAX Profiles:
MP05 (2,5 - 2,69 GHz, 5MHz and 10MHz bandwidth),
MP09 (3,4 – 3,6 GHz, 5MHz bandwidth)
MP10 (3,4 – 3,6 GHz, 7MHz bandwidth)
MP12 (3,4 – 3,6 GHz, 10MHz bandwidth)
To simulate interfering signals, R&S SMU vector signal generators (VSG) are integrated in the TS8977
Test System. The RF output of the DUT is analysed by means of the built-in vector signal analyser
(VSA).
The in-band signal switching and conditioning unit SSCU is required to connect the DUT to the RF
devices within the test system. It contains all RF components which are not WiMAX specific.A separate
Advanced Signal Conditioning Unit (ASCU) is used to filter, combine, split, attenuate or amplify band
specific signals which are WiMAX specific.
The system software to operate and maintain the system, namely the RS-PASS Software, is described
in the RS-PASS Operation Manual.
The TS8977 hardware consists of the following components:
No Type Device or Option Manufacturer
1PSL3
2FSU26
FSP-B10 External generator control for ESCI, ESPO
3SMU 200A
SMU-B106 RF path A 100kHz to 6 GHz
SMU-B11 Baseband generator (16 Msample)
SMU-B13 Baseband main module
SMU-B17 Analog baseband input
SMU-B81 Rear panel connectors for 1st RF path
SMU-K49 Digital Standard IEEE 802.16
SMU-K62 Additional white gaussian noise
In signalling mode a connection between the protocol and signalling unit and the DUT has to be
established.
For transceiver and transmitter tests the signal of the DUT is directed not only to the protocol and
signalling unit, but also to the spectrum analyser FSU. This transmission path is the so-called measurement or analyser path.
For receiver tests, interferer signals are generated by the SMU and SMR signal generators. The
interferer signals are combined with the wanted signals of the protocol and signalling unit. This
transmission path is the so-called stimulus or generator path.
The system controller controls all devices within the TS8977. Most of the instruments are commanded
via GPIB connection. The exceptions include the switching units SSCU and ASCU, which are connected
via parallel interface.
The system controller hosts the RS-PASS software, including the system software with all required
device drivers, the applications performing the tests as defined, the graphical user interface and several
tools. Please refer to the RS-PASS operation manual for more details.
The system is being delivered with the Rohde & Schwarz PSL3, configured with 512 MB RAM, 2 hard
disks and two Ethernet interfaces. The operating system is WINDOWS XP.
Before the system controller can be powered up the monitor, the mouse and the keyboard have to be
connected to the TS8977 system panel. To switch “ON” the system, the rocker switch on the front panel
has to be pushed behind the flap.
2.2.1.2 Ethernet HUB
The first Ethernet adapter of the system controller is connected to the Ethernet HUB. All TCP/IP devices
installed on the system have to be connected to that HUB. However, the second adapter card of the
PSL3 shall not be connected to the HUB and cannot be used for a connection to the customer's
company network.
Be aware that for connections to the HUB cross link cables can not be used! Only for
direct connections between instruments a cross link network cable is necessary.
The SMC Ethernet HUB is not equipped with a power switch. In order to apply power to the device, the
power cord needs to be plugged in the AC source. A "power" LED will illuminate when main power is
applied. Several activity and state LEDs indicate the status of the connections.
2.2.2 Signal Generating Instruments
2.2.2.1 Signalling Unit CMW270
In most test cases it is necessary to establish a running connection between the test system and the
DUT before a RF performance test can be performed.
As a consequence the test system has to simulate a base station. In the case of the simulation of a
base station, the test system has to page the DUT, enabling it to access one of the simulated WiMAX
cells and simulating the call establishment process. To achieve this, the corresponding protocol