CNT-90 timer/counter/analyzer
Contents
1. offers microwave CW frequency measurements and very short burst measurements down to 40 ns e Menu oriented settings reduce the risk of mistakes Valuable signal information given in multiparameter displays removes the need for other instruments like DVM s and Scopes Additional Technical Features CNT 90 does not only offer high performance it is an ultimate tool for more specialized measurement Some great features of the CNT 90 are e Zero dead time technique and continuous time stamping of trigger events This feature allows correct measurements of Allan Deviation and is very valuable in mechanical e g rotational ra Y o X S gt 3 spectracom CNT90 J encoder testing and medical e g nerve impulse respiratory cycles measurements where every single cycle must be measured Limit qualifying a handy tool for making correct calculation of statistical parameters e g to verify the jitter of digital pulses that appear in discrete clusters e g in CD players or in HDB3 coded data By setting limits you can isolate one cluster in the calculation Hysteresis compensation in Time Interval measurements reduces trigger level error from the typical 15 20 mV found in most counters on the market today down to typ 2 5 mV This means 6 8 times improved trigger precision in critical time interval measurements Battery Option The CNT 90 has an optional battery pack with 90 Wh capacity capable of mains free operation fo2. 40 C to 50 C Altitude 4 600 meters Vibration Random and sinusoidal according to MIL PRF 28800F Class 3 Shock Half sine 30G per MIL PRF 28800F lt 5x 107 lt 6x 108 lt 2x107 lt 5x108 lt 2x108 23x1O 23x10 lt 1 5x10 lt 2 5x10 lt 4x1070 lt 5x1010 lt 1x108 lt 5x108 lt 5x10 lt 1x10 not specified lt 1x10 lt 1x10 5x10 lt 1x10 lt 1x10 lt 3x10 n a lt 1x107 30 min lt 1x108 10 min lt 5x10 30 min 10 min Bench handling Transit drop test Heavy duty transport case and soft carrying case tested according to MIL PRF 28800F Reliability MTBF 30 000 hours calculated Safety EN 61010 1 pollution degree 2 meas cat 1 CSA C22 2 No 1010 1 CE EMC EN 61326 1997 Al 1998 increased test levels according to EN 50082 2 Group 1 Class B CE Power Requirements Max configuration 90 to 265 Vrms 45 to 440 Hz lt 40 W lt 60 W if battery option Dimensions and Weight Width x Height x Depth 210 x 90 x 395 mm 8 25 x 3 6 x 15 6 in Weight Net 2 7 kg 5 8 b Shipping app 3 5 kg app 7 5 Ib Ordering Information Basic Model CNT 90 400 MHz 100 ps Timer Counter including Standard Time Base Included with Instrument 3 years product warranty line cord user documentation on CD and Certificate of Calibration The warranty period may be dependent on country Input Frequency Options Option 10 3 GHz Input C Option 13 8 GHz Input C Option 1
3. Modulation Domain Analysis is performed by capturing fast frequency changes with up to 250k Samples s e For calibration purposes the CNT 90 offers very high accuracy through stable internal OCXO time base low systematic time interval A B error and high resolution e Wide frequency range to 20 GHz covers most CW and burst microwave frequency measurement needs There s no need to invest in a separate microwave counter Outstanding Performance Price Ratio The high performance CNT 90 _ timer counter analyzer outperforms all counters on the market except Pendulum CNT 91 independent of measurement task USA 1565 Jefferson Road Suite 460 Rochester NY 14623 1 585 321 5800 sales spectracomcorp com FRANCE 3 Avenue du Canada 91974 Les Ulis Cedex 33 0 1 64 53 39 80 sales spectracom fr UK 6A Beechwood Chineham Park Basingstoke Hants RG24 8WA 44 0 1256 303630 info spectracom co uk e The graphic presentation of results histogram trend line numerical statistics modulation domain provide a clearer understanding of random signal distribution and measurement changes over time from slow drift to fast jitter and modulation e Both USB and GPIB interfaces are standard With USB you won t need to invest in a GPIB interface card for your PC The GPIB operates in either SCPI GPIB or 53131 53132 emulation mode for plug and play replacement in existing ATE systems e Wide frequency range to 20 GHz
4. 00 MHz lime Min hysteresis window hysteresis compensation Frequency One third of input signal amplitude Analog LP Filter Nominal 100kHz RC type Digital LP Filter 1 Hz to 50 MHz cut off frequency Max Voltage Without Damage IMO 350 V DC AC pk to 440 Hz falling to 12 Vrms at 1MHz 509 12 Vrms Connector BNC Input C Option 10 Operating Input Voltage Range opt 10 100 to 300 MHz 20 mVrms 21 dBm to 12 Vrms 0 3 to 2 5 GHz 10 mVrms 27 dBm to 12 Vrms 2 5 to 2 7 GHz 20 mVrms 21 dBm to 12 Vrms 2 to 3 0 GHz 40 mVrms 15 dBm to 12 Vrms Prescaler Factor 16 Impedance 50 nominal VSWR lt 2 5 1 Max Voltage without Damage 12 Vrms pin diode protected Connector Type N Female Input C Option 13 Operating Input Voltage Range 100 to 200 MHz 100 mVrms to 7Vrms typ 200 to 300 MHz 40 mVrms to 7Vrms typ 300 to 500 MHz 20 mVrms to 7Vrms 0 5 to 3 0 GHz 10 mVrms to 7Vrms 3 0 to 4 5 GHz 20 mVrms to 7Vrms 4 5 to 6 0 GHz 40 mVrms to 7Vrms 6 0 to 8 GHz 80 mVrms to 7Vrms Prescaler Factor 256 Impedance 50 nominal VSWR lt 2 5 1 Max Voltage Without Damage 7Vrms Connector Type N Female Input C Option 14 and 14B Freq Range 0 25 to 15 GHz opt 14 0 25 to 20 GHz opt 14B Operating input voltage range 250 to 500 MHz 21 to 27 dBm 0 5 to 15 GHz 27 to 27 dBm 15 to 18 GHz 27 to 27 dBm Option 14B only 18 to 20 GHz 21 to 27 dBm Option 14B only Prescaler Fact
5. 4 15 GHz Input C Option 14B 20 GHz Input C Oscillator Options Option 19 90 Medium Stability Oven Time Base 0 06 ppm month Option 30 90 Very High Stability Oven Time Base 0 01 ppm month Option 40 90 Ultra High Stability Oven Time Base 0 003 ppm month Optional Accessories Option 11 90 Rear Panel Inputs replaces front panel inputs Option 22 90 Rack Mount Kit Option 23 90 Battery Unit Option 27 Carrying Case soft Option 27H Heavy duty Hard Transport Case Option 29 90 TimeView Modulation domain Analysis SW for CNT 90 Option 90 01 Calibration Certificate with Protocol Standard oscillator Option 90 06 Calibration Certificate with Protocol Oven oscillator Option 90 00 Calibration Certificate with Protocol Hold over frequency aging week Option 95 05 Extended warranty from 3 to 5 years OM 90 Users Manual English printed PM 90 Programmers Manual English printed SM 90 Service Manual English GS 90 EN Getting Started English GS 90 FR Getting Started French GS 90 DE Getting Started German February 4 2013 4031 600 90101 rev 27 Specifications subject to change or improvement without notice Spectracom is a business of the Orolia Group 2010 2013 Orolia USA Inc
6. Qspectracom TEST amp MEASUREMENT CNT 90 Timer Counter Analyzer e 250k measurements s to internal memory 750k stored measurements results e Fast GPIB USB bus speed 5k meas s block mode e Resolution 12 digits s freq 100 ps time 0 001 phase e 14 digits display e Frequency range 400 MHz as standard 3 8 15 and 20 GHz optional e Ease of use Multi parameter display and graphical presentation of results e Outstanding performance price ratio pendulum ee ee pendulum EEE The Pendulum CNT 90 timer counter analyzer is an ultimate tool for measurement analysis and calibration of Frequency Time Interval or Phase The CNT 90 is a high performance counter with a fast measurement speed to 250 000 measurements s and time interval measurement resolution to 100 ps The CNT 90 offers ease of use including graphical display and improved display and improved control over measurement at an outstanding price Leading Performance The basic performance of the CNT 90 is leading compared to competition e With 5k measurement results transferred per second block mode via GPIB USB the CNT 90 can save you up to 90 testing time and thus money in test systems by increased throughput e High resolution is vital for R amp D and production testing CNT 90 meets this requirement with 100 ps single shot time or 12 digits s frequency Obtained values are displayed with up to 14 digits e
7. creasing to 1 gt 10 MHz Resolution can be improved via averaging statistics Freq Range up to 160 MHz Aux Parameters Freq A Va Vb in cB Vmax Vmin Vp p A B Range 50 V to 50 V 5V to 5V Range is limited by the specification for max input voltage without damage see input A B Freq Range DC 1Hz to 300 MHz Mode Vmax Vmin Vp p Resolution 2 5 mV Uncertainty 5V range typical DG 1Hz to IkHz 1 15 mV IkHz to 20 MHz 3 15 mV 20 to 100 MHz 10 15 mV 100 to 300 MHz 30 15 mV Aux parameters Vmin Vmax Vp p Time stamping A B C Raw time stamp data together with pulse counts on inputs A B or C accessible via GPIB or USB only Max Sample Speed See GPIB specifications Max Frequency 160 MHz Timestamp Resolution 70 ps Input and Output Specifications Inputs A and B Frequency Range DC Coupled DC to 400 MHz AC Coupled 10 Hz to 400 MHz Impedance IMQ 20 pF or 50 Q VSWR lt 2 1 Trigger Slope Positive or negative Max Channel Timing Difference 500 ps Sensitivity DC 200 MHz 15 mVrms 200 300 MHz 25 mVrms 300 400 MHz 35 mVrms Attenuation xl x10 Dynamic Range x1 30 mV p p to 10 V pp within 5V window Trigger Level Read Out on display Resolution 3mV Uncertainty x1 15 mV 1 of trigger level AUTO Trigger Level Trigger level is automatically set to 50 point of input signal 10 and 90 for Rise Fall Time AUTO Hysteresis Freg range 1 Hz to 3
8. e values above below inside or outside limits Measurement Pacing Pacing Time Range 4ps to 500 sec Mathematics Functions K X L M and K X L M X is current reading and K L and Mare constants set via keyboard or as frozen reference value X Other Functions Measuring Time 20 ns to 1000 sec for Frequency Burst and Period Average Single cycle for other measuring functions Timebase Reference Internal External or Automatic Display Hold Freezes result until a new measurement is initiated via Restart Limit Alarm Graphical indication on front panel and or SRQ via GPIB Limit Values Lower limit Upper limit Settings OFF or Alarm if value is above below inside or outside limits On Alarm STOP or CONTINUE Display Numeric Graphic Stored Instrument Set ups 20 instrument setups can be saved recalled from internal non volatile memory 10 can be user protected Result Storage Up to 8 measurements of max 32k samples can be stored in local memory for later downloading Display Backlit LCD Graphics screen for menu control numerical read out and status information Number of Digits 14 digits in numerical mode Resolution 320 97 pixels GPIB Interface Compatibility IEEE 488 2 1987 SCPI 1999 53131A 53132A compatibility mode Interface Functions Time Base Options Time base type OCXO OCXO OCXO Uncertainty due to Aging per 24h per month per year Temperature variations O C to 50 C 20 C
9. equency spec Minimum Burst Duration Down to 40 ns Minimum Pulses in Burst Input A or B 3 6 above 160 MHz Input C 3 x prescaler factor PRF Range 0 5 Hz to 1MHz Start Delay 10 ns to 2sec 10 ns resolution Aux Parameter PRF Period A B C Mode Single Average Range Input A B 2 5 ns to 1000 sec single average Input C option 10 ns down to 330 125 70 or 50 ps Resolution 100 ps single 12 digits s avg Aux Parameter A B Vmax Vmin Vp p Ratio A B B A C A C B Range 10 to 10 Input Frequency Input A B O 1 Hz to 400 MHz Input C option Up to 3 8 15 or 20 GHz Aux Parameters Freq Freq 2 Time Interval A to B B to A A to A B to B Range Normal Calculation Ons to 10 sec Smart Calculation 10 sec to 10 sec Resolution 100 ps Min Pulse Width 1 6 ns Smart Calculation Smart Time Interval to determine sign A before B or A after B Positive and Negative Pulse Width A B Range 2 3 ns to 10 sec Min Pulse Width 2 3 ns Aux Parameters Vmax Vmin Vp p Rise and Fall Time A B Range 1 5 ns to 10 sec Trigger Levels 10 and 90 of signal Vp p Min Pulse Width 1 6 ns Aux Parameters Slew rate Vmax Vmin Positive and Negative Duty Factor A B Range 0 000001 to 0 999999 Freq Range 0 1 Hz to 300 MHz Aux parameters Period pulse width Phase A Relative B B Relative A Range 180 to 360 Resolution Single cycle 0 001 to 10 kHz de
10. or 128 Typical sensitivity option 14B 0 5 2 10 i 15 l I 20 Pi D mg 25 5 my es Ts F 35 D gt aie P i 40 nN oe __ 45 50 0 5 10 15 20 25 GHz Typical Spec Impedance 50 Q nominal VSWR lt 2 0 1 AM tolerance gt 90 within sensitivity range Max Voltage Without Damage 27 dBm Connector Type precision N Female Rear Panel Inputs and Outputs Reference Input 1 5 or 10 MHz 0 1 to 5Vrms sine impedance gt 1kQ Reference Output 10 MHz gt 1Vrms sine into 50 Q Arming Input Arming of all measuring functions Impedance Approx 1kQ Freg Range DC to 80 MHz Rear Panel Measurement Inputs A B C opt 11 90 Impedance 1MQ 50 pF or 50 Q VSWR lt 2 1 Connectors SMA female for rear input C BNC for all other inputs outputs Auxiliary Functions Trigger Hold Off Time Delay Range 20 ns to 2sec 10 ns resolution External Start and Stop Arming Modes Start Stop Start and Stop Arming Input Channels A B or E rear panel Max Rep Rate for Arming Signal Channel A B 160 MHz Channel E 80 MHz Start Time Delay Range spectracom Technical Specifications CNT 90 20 ns to 2sec 10 ns resolution Statistics Functions Maximum Minimum Mean Amax Min Standard Deviation and Allan Deviation Display Numeric histograms or trend plots Sample Size 2 to 2 x 10 samples Limit Qualifier OFF or Captur
11. r at least 4 5 hours In stand by mode the battery pack can keep an OCXO warm and running for over 24 hours Battery operation of a frequency counter analyzer is valuable in three different applications e Mains free operation in the field e Transportation of high stability OCXO to maintain stability which gives instant use at destination without any warm up time Figure 1 Display showing phase value frequency attenuation Va Vb and auxiliary parameters PEH HNR y Ae 50 000 001 76 w A 7 j i ive I i a 3 E Figure 2 Measure function selection menu shown with measured results mAN TTE paai Fpa poe 4881 2 mie 4 i EEE aj mrt E g ri ai Figure 3 Input parameter setting menu shown with measured result e Battery backup acting as a built in UPS Uninterrupted Power Supply Excellent Graphical Presentation One of the great features of the CNT 90 is the graphical display and the menu oriented settings The non expert can easily make correct settings without risking costly mistakes The multiparameter display with auxiliary measurement values such as Vmax Vmin Vp p in frequency measurements and frequency attenuation phase eliminates the need for extra test instruments and provides direct answers to frequently asked questions like What is the attenuation and phase shift of this filter Measurement values are presented both numerically and graphicall
12. to 26 C typ values Short term stability t 1s root Allan Variance t 10 s Power on stability Deviation vs final value after 24 h on time after a warm up time of Typical total uncertainty for operating temperature 20 C to 26 C at 2o 95 confidence interval 1 year after calibration 2 years after calibration 1 After 1 month of continuous operation www spectracomcorp comM SH1 AH1 T6 L4 SR1 RLI DC1 DT1 E2 Max Measurement Rate GPIB 5k readings s block mode 500 readings s individual GET trig ed To Internal Memory 250k readings s Internal Memory Size Up to 750k readings USB Interface USB Version 2 0 Full speed 11 Mbits s Calibration Mode Closed case electronic calibration menu controlled Cal Frequencies 0 1 1 5 10 1 544 and 2 048 MHz Option 23 90 Battery Unit Battery Type Lilon 90 Wh External DC input 10 to 18 V dc max 6A Operating temp range 0 to 40 C Storage 20 to 60 C 1 month 20 to 45 C 3 months 20 to 20 C year Battery operating time at 25 C ON gt 4 5 hours Stand by gt 24 hours Charging Automatically when AC or ext DC is connected Battery status indicator On screen with low battery warning Weight 2 3 kgs General Specifications Environmental Data Class MILPRF 28800F Class 3 Operating Temp 0 C to 50 C Storage Temp 40 C to 71 C Humidity 5 95 10 C to 30 C 5 7 5 30 C to 40 C 5 45
13. y The graphical presentation of results histograms trends etc gives a much better understanding of the nature of jitter It also provides you with a much better view of changes vs time from slow drift to fast modulation trend plot Three statistical views of the same data set can be viewed Numerical Histogram and Trend It is very easy to capture and toggle between views of the same data see figure 4 5 amp 6 When adjusting a frequency source to given limits the graphic display gives fast and accurate visual calibration guidance 15356095 H GG oF 1 L Figure 4 Display showing different statistical parameters viewed at the same time Figure 6 The same result as in Figure 5 now displayed as a histogram spectracom Technical Specifications CNT 90 Measuring Functions All measurements are displayed with a large main parameter value and smaller auxiliary parameter values with less resolution Some measurements are only available as auxiliary parameters Frequency A B C Range Input A B 0 002 Hz to 400 MHz Input C option Up to 3 8 15 or 20 GHz Resolution 12 digits in 1s measuring time normal Aux Parameter A B Vmax Vmin Vp p Frequency Burst A B C opt 14 148 Frequency and PRF of repetitive burst signals can be measured without external control signal and with selectable start arming delay Functions Frequency in burst in Hz PRF in Hz Range Input A B C See Fr
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