Rohde & Schwarz 1094.0006.50, Operating Manual

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CTS55 Getting Started With Manual Test
1094.0006.55 6.1 E-6
6 Getting Started With Manual Test
6.1 Overview
Unlike Autotest and Quicktest the Manual Test mode does not have a fixed sequence of tests. Instead
the user selects the required test using the buttons and menus.
In Manual Test mode the CTS for digital mobiles is easy and convenient to operate thanks to its clear-
cut menu structure.
If this is your first encounter with CTS in Manual Test mode, this chapter will give you a quick survey of
tests performed on mobile stations. You will be guided step by step through the Manual Test menus.
Each step is provided with reference numbers, e.g. circles with a number (
c
) relate to further
information to be found below.
The layout and the contents of this chapter are tailored to application requirements and provide
information both on CTS and GSM, PCS and PCN.
To become familiar with CTS in Manual Test mode and its wide variety of test functions, try out the
functions described immediately using a CTS and a mobile. The instructions and information given in
this chapter are based on the assumption that the mobile station is connected to the CTS via a cable.
Important notes:
In order to exclude unpredictable circumstances that may arise due to the use of a network SIM card
(e.g. the SIM card prohibits the registration (Location Update) on the network simulated by CTS or it
probibits the signalling for the bit error test), it is strongly recommended that an R&S GSM test SIM card
(part CRT-Z2) is used.
The GSM, PCN and PCS networks are cellular networks. The area to be covered by the network is
divided up into honeycomb-shaped cells in the ideal case.
Each cell accommodates a base station transmitting the control information on a defined channel. The
CTS is simulating the radio network, i.e. the base station, so that a control channel is transmitted. If the
CTS is in the area of a cell make sure that the control channel of the CTS differs from that of the cell. In
the case where the CTS uses the same channel as the base station of the cell, the mobile phone may
try to register with the cell or the Location Update with the CTS may be disturbed.
Special attention is required when using an antenna coupler (see chapter 8).