Rohde & Schwarz 1094.0006.50, Operating Manual

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CTS55 Introduction
1094.0006.55 1.1 E-6
1 Introduction
The tester CTS is a value-for-money instrument for automatic and fast function tests, as well as detailed
service testing on digital mobiles. Two automatic and fast function tests are implemented in CTS, one
being called
Quicktest , the other being called Autotest . The detailed service test is called the Manual
Test of the CTS.
1.1 Application for the Autotest
1.1.1 Overview
The main application of the Autotest is to check the operation of a mobile station upon handing it out to
the customer, e.g. upon sale (to give enhanced customer confidence, by demonstrating proper
functioning of equipment in the presence of the customer), before or after a repair or in the event a
complaint is received. In the latter case, the customer's complaint can be verified immediately, avoiding
unnecessary return of the mobile phone to a central service station, and thus saving time and expense.
With the CTS, optimum customer support can be provided even by small service shops and sales
chains that have no highly-qualified service staff of their own but rely on an external service centre.
1.1.2 Test Functions in the Autotest
•
location update
•
set-up of speech link (call from network and from mobile)
•
close-down of speech link (from network and from mobile)
•
echo test (a message spoken into the mobile is sent back by the tester with a delay)
•
tests and measurements on customer-defined GSM channels. It can be configured to carry out tests
and measurements on one, two or three channels.
•
mobile receiver sensitivity (RxLev, RxQual)
•
measurement of average output power of mobile
•
measurement of the power ramp and phase frequency error
•
measurement of the Bit Error Rate
•
change of power level on existing speech link
•
change of channel on existing speech link
•
Test of the mobile's keypad (by dialling a phone number)
•
Testing of one or two GSM bands within a single test sequence.
•
Handover between two different GSM bands.