Fluke PM6690-661 - Frequency counter

Unbeaten speed and resolution
The PM 6690 offers an unprecedented resolution and speed of 12 digits per second for frequency measurements, and 100 ps single-shot time resolution. Phase measurements come with a resolution up to 0.001º, speeded up by a "single pass" technique not found in any other counter before. The instrument speed is also seen in the acquisition speed: up to 250 000 measurements per second are taken and stored in internal memory, or 2,000 measurement per second can be made over the bus. The internal memory can hold as many as 750,000 measurement results for further analysis.

Ease of use
The menu-driven instrument control structure reduces the risk of mistakes. The main measurement result is supported by auxiliary parameter readings, which put an end to the need for other instruments like a DMM or an oscilloscope. You can measure the phase relationship between input and output signal of a device, simultaneously reading the test frequency of the signal and the voltage ratio (in dB) between input and output signals.

The graphical presentation of results, like histogram and trend curve, gives a much better understanding of random signal distribution and of system changes over time.

Auto-trigger automatically sets optimum trigger level and hysteresis adapted to the actual signal applied.

Unique graphical presentation mode
The PM 6690 uniquely offers a graphical display to present the measurement results in numerical (up to 14 digits) or graphical format. The display is also used to present the setup information as part of a convenient, menu-driven control system. The display gives the main measurement as well as auxiliary measurement results, so that commonly asked questions like “What is the attenuation and phase shift of this network?” are answered directly, in a single look at the display.

The results of statistical analysis can be presented as numerical data, as a trend graph, or as a histogram, giving an insight in the behavior of the device under test without the help of external processing – quickly and easily .

Excellent computer connectivity
The PM 6690 is equipped with both a GPIB/IEEE-488 and a USB-interface for high-speed communications with your PC. The GPIB-interface allows an easy integration in larger test systems. Alternatively, thanks to the USB interface, no dedicated GPIB-controller and plug-in card are needed to get fast communications with the PC in small test setups.

The optional TimeView-90W PC software package allows for instrument remote control, and the analysis and display of measurement results in a choice of graphs. For example, results can be displayed as raw data, as a statistical histogram, as a waveform graph (as if you were using an oscilloscope) or as an FFT spectrum graph. TimeView allows analysis of modulation parameters like modulation depth or frequency modulation index.

Plug-and-play in systems
The remote programming allows for remote control of each front panel accessible, using either GPIB/IEEE-488 or the USB-bus. Next to its native, standard SCPI-command structure, the PM 6690 offers a 53131A-emulation mode which allows for an easy exchange of instruments in test systems, requiring virtually no reprogramming.

Calibration Instruments   >   Time and Frequency Instruments   >

PM 6690 Counter/Timer/Analyzer

Measurement Features Measurement Functions   Frequency, Frequency Burst, Period, Frequency Ratio, Time Interval, Pulse Width, Rise- and Fall-Times, Phase, Duty Factor, Voltage Level Frequency A, B, C Range:   Input A, B: 0.001 Hz to 300 MHz (PM 6690/0xx) Input C (option): Up to 3 GHz (PM 6690/6xx), up to 8 GHz (PM 6690/7xx) Resolution: 12 digits in 1s measuring time Aux parameters: Vmax, Vmin, Vp-p Frequency Burst A, B, C   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)   Number of cycles in burst Range: Input A, B, C: See Frequency spec. Minimum burst duration: 40 ns (80 ns above 160 MHz) Minimum number of pulses in burst:   Input A or B: 3 (6 above 160 MHz) Input C: 3 x prescaler factor PRF range: 0.5 Hz to 1 MHz Start delay range: 10 ns to 2 s, 10 ns resolution Aux parameters: PRF, number of cycles in burst Period A, B, C Average Range:   Input A,B: 3.3 ns to 1000 s Input C: 330 ps to 10 ns (PM 6690/6xx)   125 ps to 5 ns (PM 6690/7xx) Resolution: 100 ps (single); 12 digits/s (average) Aux parameters: Vmax, Vmin, Vp-p Frequency Ratio A/B, B/A, C/A, C/B Range: 10 -9 to 10 11 Input frequency:   Input A, B: 0.1 Hz to 300 MHz Input C (option): Up to 3 GHz, up to 8 GHz Aux parameters: Freq 1, Freq 2 Time Interval A to B, B to A, A to A, B to B Range:   Normal calculation: 0 to +10 6 s Smart calculation: -10 6 s to +10 6 s Resolution: 100 ps Min. pulse width: 1.6 ns Smart calculation: Smart Time Interval to determine sign (A before B or B before A) Positive and Negative Pulse Width A, B Range: 1.6 ns to 10 6 s Min. pulse width: 1.6 ns Aux parameters: Vmax, Vmin, Vp-p Rise and Fall Time A, B Range: 700 ps to 1000 s (max. freq. 160 MHz) Trigger levels: 10% and 90% of signal amplitude, or manual Min. pulse width: 1.6 ns Aux parameters: Slew rate, Vmax, Vmin Phase A Relative to B, B relative to A Range: -180° to +360° Resolution: 0.001° to 100 kHz, decreasing to 0.1° to10 MHz,   1° to 160 MHz   Resolution can be improved via averaging (Statistics) Frequency range: up to 160 MHz Aux parameters: Freq (A), Va/Vb (in dB) Positive and Negative Duty Factor A, B Range: 0.000001 to 0.999999 Frequency range: 0.1 Hz to 300 MHz Aux parameters: Period, pulse width Vmax, Vmin, Vp-p A, B Range: -50 V to +50 V, -5 V to +5 V, within the ranges of max.   input voltage Frequency range: DC, 1 Hz to 300 MHz Mode: Vmax, Vmin, Vp-p Resolution: 2.5 mV Auxiliary parameters:   Mode Vmax: Vmin, Vp-p Mode Vmin: Vmax, Vp-p Mode Vp-p: Vmin, Vmax Time stamping A, B   Raw time stamp data together with pulse counts on input A or B, accessible via GPIB or USB only. Max sample speed: See GPIB specifications Max frequency: 160 MHz Timestamp resolution: 100 ps All measurements are displayed with a main parameter value and smaller auxiliary parameter values (with reduced resolution). Some measurements are available only as auxiliary parameters. Outputs and Inputs Inputs A and B Frequency range:   DC-coupled: DC to 300 MHz AC-coupled: 10 Hz to 300 MHz Impedance: 1 MΩ// 20 pF or 50 Ω(VSWR ≤ 2:1) Trigger slope: Positive or negative Max. channel timing difference: 500 ps Sensitivity:   DC-200 MHz: 15 mVrms 200-300 MHz: 25 mVrms Attenuation: x1, x10 Dynamic range (x1): 30 mVp-p to 10 Vp-p within ±5 V window Trigger Trigger level: Read-out on display Resolution: 2.5 mV 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) or can be set by the user AUTO hysteresis:   Time: Min. hysteresis window (plus hysteresis compensation) Frequency: 33% and 67% of input signal amplitude Analog noise reduction filter: Nominal 100 kHz, RC-type. Digital low pass filter: Variable 1 Hz to 50 MHz cut-off frequency Max input voltage without damage:   1 MΩ: 350 V (DC + AC pk) to 440 Hz, falling to 12 V rms (x1) at 1 MHz 50 Ω: 12 Vrms Connector: BNC Optional Prescalers (C-input) 3 GHz RF Input option (PM 6690/6xx) Rear Panel Inputs and Outputs   100 to 300 MHz: 20 mVrms to 12 Vrms 0.3 to 2.5 GHz: 10 mVrms to 12 Vrms 2.5 to 2.7 GHz: 20 mVrms to 12 Vrms 2.7 to 3.0 GHz: 40 mVrms to 12 Vrms Prescaler factor: 16 Input impedance: 50 Ω nominal, VSWR <2.5:1 Max voltage without damage: 12 Vrms, pin-diode protected Connector: Type N Female 8 GHz RF Input option (PM 6690/7xx) Operating Input Voltage Range:   300 to 500 MHz: 20 mVrms to 7 Vrms 0.5 to 3.0 GHz: 10 mVrms to 7 Vrms 3.0 to 4.5 GHz: 20 mVrms to 7 Vrms 4.5 to 6.0 GHz: 40 mVrms to 7 Vrms 6.0 to 8 GHz: 80 mVrms to 7 Vrms Prescaler Factor: 256 Input Impedance: 50 Ω nominal, VSWR <2.5:1 Max Input Voltage Without Damage: 7 Vrms Connector: Type N Female Rear Panel Inputs and Outputs Reference Input: 1, 5, or 10 MHz; 0.1 to 5 Vrms sine Input impedance: 1 kΩ (AC coupled) Reference Output: 10 MHz; > 1 Vrms sine into 50Ω Arming Input: Arming of all measuring functions Frequency Range: DC to 80 MHz Rear panel measurement inputs (option PM6690/xx2): A, B, C Impedance: Channels A and B: 1 MΩ // 50 pF or 50 Ω (VSWR ≤ 2:1); channel C: 50 Ω Connectors: Type SMA female for rear input C, BNC for all other inputs/outputs Auxiliary Functions Trigger Hold-Off Time Delay Range: 20 ns to 2 s, 10 ns resolution External Start and Stop Arming Modes: Start, Stop, Start and Stop Arming Input channels: A, B or E (External Arming) Max rep. Rate for Arming signal:   Channel A,B: 160 MHz Channel E: 80 MHz Start Time Delay Range: 20 ns to 2 s, 10 ns resolution Statistics Functions: Maximum, Minimum, Mean, Δ (Max-Min),   Standard Deviation and Allan Deviation Display: Numeric, histograms or trend plots Sample Size: 2 to 2*10 9 samples Limit qualifier: OFF or Capture values above/below/inside or   outside limits Measurement pacing   Pacing time range: 2 µs to 1000 s, max 10 k measurements/sec. Mathematics   Functions: (K*X+L)/M and (K/X+L)/M.   X is current reading; K, L and M are constants   which can be set via keyboard or as frozen reference   value (X0) obtained through earlier measurement Other Functions Measuring Time: 20 ns to 1000 s 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: Indication on front panel and/or SRQ via GPIB Limit values Lower limit (limit 1), Upper limit (limit 2) Settings: OFF or Alarm if value is above/below/inside or outside limits On alarm: Alarm, STOP or CONTINUE Display: Numerical + Graphical Stored instrument set-ups: 20 instrument setups can be saved/recalled in non-volatile memory; 10 can be user protected. 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 Programmable functions: All front panel accessible functions Compatibility: IEEE 488.2-1987, SCPI 1999   Model 53131A compatibility mode Interface Functions: SH1, AH1, T6, L4, SR1, RL1, DC1, DT1, E2 Max. measurement Rate   Via GPIB: 2k readings/s (block) or 350 readings/s individually triggered To Internal Memory: 250k readings/s, 100 k readings/s with cal on Internal Memory Size: 750k readings. USB Interface USB version: 2.0 Full Speed (11 Mbit/s) Calibration Mode: Closed case, menu controlled. One-shot. Cal. Frequencies: 0.1, 1, 5, 10, 1.544 and 2.048 MHz Environmental Specifications Environmental Data Class of Product: Class 3 according MIL-PRF-28800F Operating Temp: 0°C to +50°C Storage Temp: -40°C to +71°C Humidity: 5% to 95% (10°C to 30°C)   5% to 75% (30°C to 40°C)   5% to 45% (40°C to 50°C) Altitude: 4600m Vibration: Random and sinusoidal according to MIL-PRF-28800F, Class 3 Shock: Half-sine 30G per MIL-PRF-28800F, Bench handling Transit Drop Test: The optional heavy duty transport case and the soft carrying case have been tested according to MIL-PRF-28800F Reliability: MTBF 30 000 h (calculated value) Safety: Designed and tested for measurement Category I, Polution Degree II in accordance with EN/IEC 61010-1:2001; CAN/CSA-C22.2 No 61010.1-04 (incl. approval) EMC: EN61326 (1997) A1 (1998), increased test levels according to EN 50082-2, Group 1, Class B Power Requirements Basic version: 90 to 265 Vrms, 45 to 440 Hz, < 40 W Dimensions   210 x 90 x 395 mm (8.25 x 3.6 x 15.6 in) Weight   Net 2.7 kg (5.9 lb),   Shipping 4.5 kg (9.9 lb) < Buďte prvý, kto napíše príspevok k tejto položke. 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