Rohde&Schwarz CTS55 Digital Radio Tester
Contents
1. They measure the relevant RF parameters and check the standard Signalling Fast auto matic functional tests as well as comprehen sive Manual measure ments canofcourse be carried out The two CTS models feature a high level output which in con junction with the addi tional sensitive input allows off air measure ments Autotest 1 DECT autotests can simply be generated and started atthe push of a button Each individual func tion eg call setup or power measurement is available as a test step Tolerance limits for the OK not OK Statement are sepa rately stored for each macro and allow an the testrun can be modified depending on the results ie certain parts of the measurement can be repeated several times or not carried out at all Manual test 2 Central test menu Faulty functions detected in the auto matic test can be exactly located by means of the manual test A central test menu shows the main RF parameters at a glance All further test routines are directly available in submenus Power ramp 3 The CTS measures the power ramp of the signal sent by an FP or PP with a dynamic range of gt 60 dB The power ramp is evaluated with reference to the PO bit and allows an accurate timing analysis of the signal in addition to the transmit power measurement O utof tolerance values are quickly and pre cisely determined with the aid of zoom functions and colour highlighting RF m2. lt 2 5 dB resolution lt 51 dBm lt 0 1 us reference lt 1 5 5 C to 40 C 5 C to 45 C 25 C to 60 C complies with requirements of European EMC Directives EN 50081 1 and EN 50082 1 IEC 68 2 6 IEC 1010 1 VG standard 95332 24 A2 MIL1T 28800 D class 5 DIN 40046 IEC 68 2 34 MILSTD 810 D MILT 28800 D classes 3 and 5 IEC 68 2 3 200 V to 240 VAC 10 100 V to 120 VAC 10 50 Hz to 60 Hz 5 approx 60 W ENG 1010 1 IEC 1010 1 VDE 0411 Part 1 319 mmx 177 mmx 350 mm approx 7 8 kg approx 8 8 kg Ordering information Order designation Digital Radio Tester GSM Digital Radio Tester DECT CTS 55 CTS 60 Digital Radio Tester GSM and DECT CTS 65 Options OCXO Reference O scillator Aging 0 2 x 10 year GSM Remote Control with CTS B1 Application Software for W indows CTS K6 GSM Module Test c TS K7 Modification and upgrade kits Upgrade CTS55 to CTS65 2 CTS U56 Upgrade CTS60 to CTS65 CTS U65 Modification new front panel with RF O UT2 on front CTS U7 Recommended extras Universal Shielded Chamber CTS Z12 Antenna Coupler for handheld telephones 900 1800 1900 MHz CTS Z10 GSM Test SIM C RT Z2 DECT antenna with N connector Compact Keyboard G erman PSP Z1 US PSP Z2 Production Calibration DCV 1 Service M anual SC MEMBER E S t 1 making the right connecvions Certified Quality System ISO 9001 DQS REG NO 1954 04 1
3. tests cover all essential Signalling functions as well as the transmitter and receiver charac teristics of the mobile phone In addition to the various signalling functions the CTS checks the transmitter power of the different power classes and the receiver sensitivity by measur ing the RxLev and RxQ ual parameters output by the mobile phone A digital Signal processor also enables measure ment of the phase and frequency error biterror rate and power ramp Versatile testing The scope of measurements and hence the automatic testrun time are variable the user can decide whether he wantsa short test or more in depth testing The number of channels or measured val ues can for instance also be adapted to the individual requirements Display modes The individual results can be displayed as follows e asan OK notOK statement in the Pass Fail mode e in full detail with accurate values in the Value mode in tabular form on the display and if desired as a printout The default tolerance values can be displayed in addition Manual test 6 Digital Radio Tester CTS provides autotest routines as well as extensive manual test functions Transmitter power and characteristic receiver parameters such as RxLev and RxQ ual are displayed M oreover the following Signalling functions are available loca tion update call setup and release by CTS or mobile The dialled number as well as IMSI IMEI power class and revis
4. 5 dBm 5 dBm lt P lt 5 dBm 15 dBm lt P lt 5 dBm GSM measurement of phase and frequency error Frequency range GSM900 band GSM1800 band GSM1900 band Measurement mode Level range Internal phase error GSM900 band GSM1800 1900 band Frequency measurement uncertainty 100 kHz to 100 kHz approx 33 Hz CW burst none dummy burst midamble 0 to 8 890 MHz to 915 MHz 1710 MHz to 1785 MHz 1850 MHz to 1910 MHz 15 dBm to 39 dBm peak values up to 41 dBm 0 dBm to 39 dBm peak values up 41 dBm 0 1 dB lt l dB lt 1 5 dB lt 2 dB 890 MHz to 915 MHz 1710 MHz to 1785 MHz 1850 MHz to 1910 MHz e frequency error e phase error rms and phase error peak current value average value and maximum value over several bursts 15 dBm to 39 dBm peak values up to 41 dBm lt 1 4 rms lt 4 5 peak lt 2 0 rms lt 5 5 peak lt 15 Hz drift of timebase GSM measurement of burst power Frequency range GSM900 band GSM1800 band GSM1900 band Measurement modes Display modes Reference level for full dynamic range with 0 dB ext attenuation Dynamic range P gt 5 dBm Total error of peak power measurement P gt 0 dBm Resolution DECT DECT signal generator Frequency range Frequency drift O utput level RF IN OUT RF OUT2 DECT Burst switch off Resolution Level error RF IN OUT RF OUT2 DECT Modulation Modulation error DECT analyzer Frequency range Measurement range
5. adjustment via narrowband spectrum monitor option CTS K7 e Echo test voice test includes also testing of loudspeaker and micro phone e Functional test of mobile s keypad through display of dialled number e Display of IMSI international mobile Subscriber identity IMEI international mobile equipment identity power class revision level e Short message service SMS Digital Radio Tester CTS 5 ji i ee nfi 6 i _ l Fh i i gm vm 1 i Ais opt i ri Ej EEN fl 0 2 me d Digital Radio Tester CTS J f Po P rs i F E B F i E s y m Tij aa GSM measurements in detail Quick test 1 The quick testprovides an extremely fast go nogo information covering all essential parts of the mobile phone A speech test echo test is carried out immediately after the call setup Echo test Speech received by the microphone of the mobile is sent to the CTS stored ina buffer memory and sentback to the phone In this way itis possible to check the whole signal path from the micro phone via the RF trans mitter receiver sec tion modulator de modulator signalling section speech coder decoder analog audio components to the loudspeaker M easure ment sequences and results are clearly dis played in graphical form Autotest 2 The autotest routines allow complete func tional tests to be started at a keystroke The
6. ment of type approval systems such as the GSM system simulator and the ex tremely successful Digital Radiocom munication Tester CM D for production and service environments This back ground was fully utilized in the devel opment of the Digital Radio Testers CTS service testers which are also fit for the measurementtasks of the future di feria er eS TE Fast _ M Digital Radio Tester CTS55 for GSM measurements eS HE Beads Bes PL miL hi Digital Radio Tester CTS60 for DECT measurements The CTS at a glance e User friendly menu guided control via softkeys e Logicaluser prompting withoutinter leaved submenus e Brilliant TFT colour display a new dimension in this class of instruments e Menus in six different languages e Compact and robust design low weight e Eye strain free working e Dynamic range for measuring the power ramp GSM gt 55 dB DECT gt 60 dB e Builtin reference oscillator TC XO or OCXO option CTS B1 e Combined RF input outoutforG SM and DECT e DECT off air measurements via additional input output e Remote control via RS 232 C 4 Digital Radio Tester CTS GQHinial Technical features in detail The high resolution TFT colour display is out standing for its bright ness and extremely large viewing angle which is flexible for any requirement There are no reading problems due to reflec tions on the display or due to unfavourable lightconditions dire
7. newcomer and the service special istwill be able to conveniently carry out fasta uto matic functionaltestsaswellas complex and comprehensive manual measurements down to component level 2 Digital Radio Tester CTS Fast automatic functional test The automatic test routines of the CTS enable you to demonstrate the reliable functioning of a GSM or DECT mobile phone to the customer in a convincing manner In case of complaints raised aboutmobiles you willbe able to show your technical competence right in front of the customer the CTS detects whether the mobile is defective or whether the origin of the problems is to be sought elsewhere and precise manual fault location Additional man ual measurement routines are pro vided to permit exact fault loca tion on the basis of the conclusive results of the au tomatic test The CTS allows in depth measure ments of bit error rate phase frequency and modulation errors as well as analysis of timing and powerramp to be performed with great speed and high precision The grounds for a perfect mobile radio service are thus well prepared Module test down to component level Fitted with te GSM Module Test O ption CTS K7 the CTS provides addi tional functions allowing repairs down to the component level see page 8 All under remote control The Remote Control O ption CTS K6 provides remote control and individual automatic test runs See page 9 Conve
8. 094 0006 55 1094 0006 60 1094 0006 65 1079 0809 02 1079 2001 01 10 79 250 1 02 1079 1605 02 1079 1705 02 1079 1805 02 1079 1470 02 1079 1240 02 1039 9005 02 1086 3116 00 1091 4000 02 1091 4100 02 0240 2187 08 1094 3405 24 CTS U7 is required for units manufactured in May 1998 or before Digital Radio Tester CTS 13 Fax Reply Digital Radio Tester CTS d Please send me an offer d would like a demo d Please call me d I would like to receive your free of charge CD ROM catalog including Test amp M easurement Products Sound and TV Broadcasting Otherss N ame Company Department Position Address Country Telephone Fax E mail ROHDE amp SCHWARZ ROHDE amp SCHWARZ GmbH amp Co KG MuhldorfstraBe 15 D 81671 Munchen P 0 B 801469 D 81614 Munchen Telephone 4989 4129 0 Internet htto www rsd de CustomerSupport Tel 491805124242 Fax 4989 4129 3777 E mail CustomerSupport rsd rsd de PD 757 2509 22 Trade nares are tradenerks of the owners Subject to change Data without tolerances typical values 1198 U dr we Printed in Germany
9. Digital Radio Tester CTS Compact modular testers e Fastand precise measurements for service and adjustment Brilliant TFT colour display e Menus in six differentlanguages e Connectors for external monitor and keyboard to make opera tion even more convenient e Problem free upgrading of existing units for GSM900 1800 1900 e Measurements to GSM recom mendations e Quick test fast go nogo test e Versatile autotest e Manual test for exact fault location e Module test RF measurements without signalling burst analysis RF generator narrowband spectrum monitor Windows application pro gram for customized autotest for mobile phones and DECT Measurements to CTRO6 Configurable autotest M anual test for exact fault location O ff air measurements via Sensitive inoutand power output Universal DECT frequency range Testing a mobile is so easy GSM and DECT measurements with one and the same tester Digital Radio Tester CTS a new tester family from Rohde amp Schwarz comes in three models e CTS55 for mobile phones to G SM 900 1800 1900 e CTS60 for DECT phones portable partand fixed part e CTS65 for GSM and DECT Digital Radio Tester CTS isan extremely compact modular yet powerful meas uring instrument It combines great ease of operation and the necessary testdepth for use in all service areas for mobile and cordless phones from a simple functional test to repairs Both the
10. RF IN OUT RF IN2 DECT FM demodulator Frequency range Resolution DC offset Residual FM RF IN OUT RF IN 2 DECT Level meter Range RF IN OUT RF IN2 DECT Dynamic range Resolution Accuracy RF IN OUT RF IN 2 DECT 890 MHz to 915 MHz 1710 MHz to 1785 MHz 1850 MHz to 1910 MHz e power ramp rms and peak power of burst full burst view all rising edge useful range falling edge zoom 0 dBm to 39 dBm peak values up to 41 dBm gt 55 dB lt 1 5 dB resolution 0 1 dB 1876 608 MHz to 1935 360 MHz and half channels same as reference oscillator 100 dBm to 40 dBm 40 dBm to 0 dBm 20 dBm to 0 dBm if RF IN2 DECT is active useable up to 5 dBm gt 30 dB 0 1 dB lt 1 5 dB 2 0 dB GFSK B x T 0 5 lt 5 at288 kHz frequency deviation Same as signal generator with 0 dB external attenuation 30 dBm to 30 dBm 35 dBm to 55 dBm 0 kHz to 450 kHz 1 kHz lt 3 kHz lt 15 kHz peak 95 confidence 30 dBm to 5 dBm lt 5 kHz peak 95 confidence 30 dBm to 15 dBm lt 15 kHz peak 95 confidence 35 dBm to 55 dBm lt 5 kHz peak 95 confidence 35 dBm to 40 dBm 30 dBm to 30 dBm 35 dBm to 55 dBm gt 60 dB for P 24 dBm 0 5 dB lt 1 dB resolution 30 dBm to 5 dBm lt 2 dB resolution lt 5 dBm lt 2 dB resolution 35 dBm to 51 dBm lt 2 5 dB resolution lt 51 dBm Digital Radio Tester CTS 12 E Specifications continued Audio interface O utp
11. ct sun light Coloured menus pro vide additional means of clearly displaying the test results or high lighting important events such as outof tolerance conditions The CTS can be fully controlled via six softkeys and one hard key Maximum operat ing convenience is obtained by connect ing an external PC key board Individual key board drivers cater for country specific key boards In addition to the TFT display an external monitor can alternatively be con nected via the VGA interface The specific parameters of the networks and the mobile phones can be preset An automatic test run which immedi ately produces conclusive results can be Started simply at a keystroke For measuring the receiver sensitivity of mobile phones transmit levels below 90 dBm for DECT phones and even 100 dBm with GSM mobiles are required The measurement may be impaired by external interference which occurs for instance in the imme diate vicinity of base stations 2 E e SBD ROHDEA SCHWARZ DGTL RADIO TESTER Eii DET Digital Radio Tester CTS65 for G SM and DECT measurements lid hee a ka The Universal Shielded Chamber CTS Z12 from Rohde amp Schwarz ensures an interference free measurementenviron mentin all cellular mobile radio bands Itallows errorfree measurement of the bit error rate BER as well as of the receiver parameters RxLev and RxQ ual of the mobile phone even under strong interfere
12. ency offset e Maximum modulation deviation e Frequency drift e Timing jitter packet delay e Biterrorrate BER frame errorrate FER Specifications Common data Built in reference oscillator Frequency drift in temperature range 5 C to 40 C Aging OCXO reference oscillator Frequency drift in temperature range 5 to 40 C Aging GSM GSM signal generator Frequency range GSM900 band GSM1800 band GSM1900 band Resolution O utput level RF IN OUT with 0 dB ext attenuation RF OUT2 GSM with 0 dB ext attenuation Level error RF IN OUT RF OUT2 GSM Modulation standard lt 1 x 107 lt 0 5 x 1076 year at 35 C option CTS B1 0 1 x 107 lt 0 2 x 107 year at 35 C 935 MHz to 960 MHz 1805 MHz to 1880 MHz 1930 MHz to 1990 MHz GSM channel spacing 200 kHz 50 dBm to 110 dBm 20 dBm to 75 dBm lt 1 5 dB 2 0 dB GMSK B xT 0 3 Narrowband Spectrum Monitor Option CTS K7 Span Resolution bandwidths Dynamic range P gt 5 dBm Af 0 kHz to 30 kHz Af 30 kHz to 150 kHz M arkers 300 kHz 4 10 20 50 100 kHz typ 35 dBc typ 50 dBc 3 markers and delta marker GSM signal generator in Module Test O ption CTS K7 Frequency offset Resolution Power ramp Bit modulation GSM peak power meter Frequency range GSM900 band GSM1800 band GSM1900 band Measurement range with 0 dB ext attenuation with 15 dB ext attenuation Resolution Error with 0 dB ext attenuation P gt
13. ion level are indicated The CTS also allows the transmission and recep tion of short messages SMS point to point short message service GSM specific RF measurements Power ramp 3 The power ramp can be measured by the CTS with a dynamic range of gt 55 dB and displayed in numerical or graphical form In the graphical display mode the user can choose between overall view and partial view selected with the zoomfunction The powerramp is evaluated with reference to the train ing sequence O utof tolerance values are highlighted Phase and frequency error 4 As soon as the training sequence Is rec ognized the CTS carries outthese meas urements in accordance with the GSM specifications The results are displayed graphically and numerically Bit error rate 5 The BER is an essential criterion for eval uating the receiver characteristics of the mobile phone The CTS measures these characteristics with the aid of various test routines such as RBER class Ib Il FER and BER class Ib Il A search rou tine allows fast and precise determina tion of the limit sensitivity of mobile phones Menus in six languages 6 The multilingual CTS offers the user a choice of six working languages ie English German French Italian Spanish and Dutch User selectable network parameters MCC MNC NCC LAC The CTS is able to simulate any GSM net work This is of advan tage if e the mobile is
14. nce Functional testing of GSM mobiles is also possible via the Universal Antenna Coupler CTS Z10 without an adapter cable Antenna coupling in the 900 MHz 1800MHzand1900MHz bandsisvia the airinterfaceand allows any fault in the antenna to be reliably detected All cableless couplers are sensitive to radiated interference and should there fore be effectively screened The Uni versal Shielded Chamber CTS Z12 has been optimized for use with the Uni versal Antenna Coupler CTS Z10 and permits undisturbed measurements to be performed CTS ensures optimum interplay between the shielded chamber and the universal coupler All essential param eterssuch asinputand outputcoupling adapter cable losses and other device specific parameters can be stored in the CTS and recalled simply ata key stroke GSM measurement test and adjustment capabilities e Synchronization of mobile phone with base station which is simulated by CTS e Location update e Call setup incoming outgoing e Call release incoming outgoing e Control and measurement of transmitter power e Handover channel change e Sensitivity bit error rate BER and RBER limit sensitivity via search routine RxLev and RxQ ual e Phase and frequency error e Power ramp versus time e Timing error e AFC automatic frequency correc tion and RSSI radio signal strength indication with optional GSM Module Test CTS K7 I Q modulator
15. nient ergonomic servicing The CTS adapts itself to the user and not vice versa O peration is extremely easy and does notrequire any special GSM or DECT knowledge Functional tests can immediately be performed without any action being required from the user Automatic test runs or manual test rou tines with a large variety of preset system specific parameters are called up menu driven via softkeys The CTS immediately recognizes any input parameters thatare notmeaningful and limits them to the maximum permissible values Inappropriate entries are thus largely excluded Despite its great variety of test and measurement capabilities the CTS follows one important principle to encompass as many features as required and to keep them as simple as possible The CTS is an ergonomically designed dedicated GSM DECT mobile tester which presents the essen tial test parameters clearly and extremely userfriendly High resolution colour display with outstanding brilliance W ith its TFT colour display the CTS is exploring new grounds The excellent brilliance and intensity are ideal pre requisites for eye strain free work even under adverse ambient illumination wT rik oe oe LLET f has a a Tr Lg i PV areas PNG ioe l Tv a a Rohde amp Schwarz being one of the worldwide leading companies in the field of mobile radio measurements wasable to putits wide range of know how and expertise into the develop
16. odulation 4 In the RF modulation menu the demod ulated signal is graphically displayed in an oscilloscope window in order to allow simple and fast detection of typ ical data patterns with the aid of var ious zoom functions Characteristic modulation parameters can be meas ured and numerically displayed for the data patterns Figure 31 01010101 00001111 Timing 5 The testparameters Timing Accuracy FP test only Jitter and Packet Delay PP test only provide informa tion aboutthe accuracy and stability of the sent frame intervals z U S0 100750 200 250 300 T Ft ie a individual configura oi bd J JI J ET 7 Config tion W ith the aid of i conditionalbranching To obtain DECT meas RF Modulation The bit error rate measurement fur urements ofhighestac nishesreliableinformationaboutthere curacy an OCXO ref S00 View All ceiver characteristicsin the FP or PP The erence oscillator op CTS measures the bit and frame error tionC TS B1 should be rate BER FER and displays both the used page 8 Currentmeasured value and a Statistical value averaged over a defined number of frames DECT measurement test and adjustment capabilities e Synchronization of DUT with the CTS e Call setup e Call release e Echo test e Detection and display of RFPI FP e Normal transmit power N TP e Power ramp versus time e Modulation characteristics versus time e Frequ
17. t enhances the power range of the CTS RF OUT2 15 dBm to 75 dBm Narrowband spectrum monitor 3 The narrowband spectrum monitor in the module test option allows fast and convenient adjustment of the I Q mod ulator of mobile phones The menu is optimized for typical appli cations to ensure problem free inter play with the existing software OCXO reference oscillator option CTS B1 It ensures e excellent absolute accuracy e minimum temperature dependent drift e especially high long term stability aging 0 2 x 10 year In the service mode the absolute fre quency error of the mobile is measured rather than the error relative to the CTS Since the stability of the reference oscil lator directly influences the measure ment accuracy option CTS B1 should be used for this application All under remote control Remote control option CTS K6 O ption CTS K6 allows the CTS to be remote controlled via the serial inter face RS 232 C All settings of the manual test and module test can be called up via the RS 232 C interface and the results and displays read out The Windows Application Program CTSGO supplied with this option allows extremely fast and easy gener ation of individual automatic test runs A test program with individual toler ance evaluation can be configured just with a few mouse clicks 1 Individual tolerance values can be stored for each automatic test run This affords maximum fle
18. to be checked together withthe SIM card of the network e the testSIM card is notaccepted by the mobile phone e a test SIM card is not available Pe Tee Digital Radio Tester CTS aeii ala Digital Radio Tester CTS Testing at component level GSM module test option CTS K7 The GSM module test provides additional functions allowing repairs down to the component level burst analysis RF generator e narrowband spec trum monitor for adjustment of the I Q modulator The mobile phone is setto a special service mode Usually an ex ternal PC is used to controlthe mobile and trigger itto send The CTS is then able to measure the RF param eters of the transmitter section withoutthe sig nalling section of the mobile being re quired Burst analysis 1 All characteristic test parameters of the transmitter such as out put power or phase and frequency error are clearly displayed in a menu The CTS is able to rec ognize and analyze typical modulation patterns training sequence pattern 0 to 8 RF generator 2 An independent RF generator gener ates G SM specific signals which are required for adjustments such as AFC or RSSI In addition to the typical mod ulation patterns training sequence 0 to 7 a frequency offset corresponding to a permanent 0 or 1 modulation can alternatively be entered A second RF outpu
19. ut Range O utput impedance S N THD Passband ripple Input Range Input impedance S N THD Passband ripple DECT applications Accuracy and stability of RF carrier Error Accuracy and stability of timing Error Modulation section 1 2 4 Error Frequency drift Error Transmit power Measurement accuracy RF IN OUT RF IN2 DECT Power versus time Power measurement accuracy RF IN OUT RF IN2 DECT Timing measurement accuracy General data VSW R atall RF connectors Rated temperature range Operating temperature range Storage temperature range Electromagnetic compatibility Mechanical resistance Sine vibration Random vibration Shock Rel humidity Power supply Power consumption Electrical safety Dimensions W x H x D W eight CTS55 CTS60 CTS65 unbalanced 558 mV 300 Hz to 3 kHz lt 10 Q R gt 2 kQ 30 dB at max level 0 5 dB unbalanced 80 mV 300 Hz to 3 kHz 22 kQ 30 dB at max level 0 5 dB averaging 10 bursts lt 2 kHz reference lt 0 1 us reference approx 11 kHz with min 202 kHz permissible deviation approx 13 kHz with max 403 kHz permissible deviation approx 1 kHz ms over 200 bursts lt 1 dB resolution 30 dBm to 5 dBm lt 2 dB resolution lt 5 dBm lt 2 dB resolution 35 dBm to 51 dBm lt 2 5 dB resolution lt 51 dBm lt 1 dB resolution 30 dBm to 5 dBm lt 2 dB resolution lt 5 dBm lt 2 dB resolution 35 dBm to 51 dBm
20. xibility M obile specific critical parameters can thus be taken into account by selecting appro priate tolerance values The testrun can very easily be adapted with justa few mouse clicks and stored Up to six different test sequences per test run can be defined All RF meas urements can be performed separately in each test sequence 2 The CTS outputs the results in a meas urementreport 3 The results can also be stored in a PC for archiving or exported via data filters to other pro grams eg Microsoft Excel for statis tical evaluation Performing BER Measurements anp 1a ee a Sd ECH Fimi tee F Tes Cerun ee ipb Po ior or Or ta ar E T Mactng POP Serer ar ie F ane Corer ne aris EOE E zE z 2 E L E Him ti Ei ieme E eee e fel p ee ees m g e a BE Ma l i AE l E S o d A ee ippa ol Ee pp Bl ain ailemi bia n j an oe m i OP bd Ps ee E Ts a SP a ra l E as Ea T E a wa eee Pen ob isi Ga ga ee bees ee e x i ee mmi u a a Emm mge ie DEE pihl FT es Fl LE j Ps T ENE Eai es E E ri bib msa m HS cem m he ie ae l peme fi oe EE biy Foes fee Se dee Digital Radio Tester CTS DECT measurements DECT measurements with CTS60 and CTS65 These two CTS models provide DECT meas urements on the fixed part FP and on the portable part PP in the service mode CTRO6 mode
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