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TDP7700 Series
TriMode™ Probes
Technical Reference

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Содержание Trimode TDP7700 Series

Страница 1: ...TDP7700 Series TriMode Probes Technical Reference Register now Click the following link to protect your product www tek com register 077 1427 01...

Страница 2: ...n in this publication supersedes that in all previously published material Specifications and price change privileges reserved TEKTRONIX and TEK are registered trademarks of Tektronix Inc TriMode and...

Страница 3: ...der in tip connection wire length 14 Using offset voltage to extend TekFlex solder in tip input voltage range 17 Making single ended measurements using the P77BRWSR differential probe tip 18 Temperatu...

Страница 4: ...P77C292MM adapter 13 Figure 16 P77STFLXA solder tip attached with 10 mils 0 250 mm wires rise time 30 5 ps 15 Figure 17 P77STFLXA solder tip attached with 75 mils 1 90 mm wires rise time 27 9 ps 15 F...

Страница 5: ...List of Tables Table 1 Probe tip attenuation factors 5 Table 2 Rise time and overshoot degradation versus lead length 17 List of Tables TDP7700 Series TriMode Probes Technical Reference v...

Страница 6: ...and components when power is present Do not operate in wet damp conditions Be aware that condensation may occur if a unit is moved from a cold to a warm environment Do not operate in an explosive atm...

Страница 7: ...ou read the marking WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product Symbols on the product The follow...

Страница 8: ...Important safety information TDP7700 Series TriMode Probes Technical Reference viii...

Страница 9: ...tight spaces a 2 92 mm adapter for connecting to fixtures and pre installed test points and a high bandwidth adjustable browser for debugging and non permanent connections Figure 1 TDP7700 Series Tri...

Страница 10: ...signals from the probe comp box through the TekFlex connector interface Some of the wires carry bidirectional data such as queries and responses about the type of probe tip attached to the TekFlex co...

Страница 11: ...struction provides better usability compared to the lower cost flex circuit tips The first time the probe tip is detected S parameter data for the probe tip is sent to the oscilloscope and probe tip s...

Страница 12: ...s higher loading characteristic below 1 GHz has problems when taking measurements of signals such as MIPI that can be switched to an unterminated high impedance mode for low power operation The TDP770...

Страница 13: ...SP correction filters that are unique to the probe tip The S parameter memory includes a unique data header used in automatically identifying the probe tip type and serial number The A and B signal ou...

Страница 14: ...signal input pins A low frequency ground connection is optionally available at a square pin socket on the browser probe tip housing The comp box receives power and control signals from the oscillosco...

Страница 15: ...ncy and convenience by enabling full differential signal characterization from a single soldered connection TekFlex active probe solder tips support the TriMode functionality of a TDP7700 Series probe...

Страница 16: ...ovides the probe ground reference and is connected to the probe tip ground interconnect using the probe s cable coaxial shields Figure 6 TriMode input structure Operating voltages The TDP7700 Series p...

Страница 17: ...e input signal dynamic range gain compression will result in increased linearity error and clipping The DC specifications of the probe are valid only over the input signal dynamic range The dynamic ra...

Страница 18: ...esult the offset voltage control is no longer calibrated and will have twice the calibrated effect on the measured probe output The offset voltage control accessible from the attached oscilloscope fro...

Страница 19: ...n by the probe amplifier maximizing the differential dynamic range Figure 9 Simplified Auto Tracking circuitry The A and B input signals are buffered by the active probe tip buffer amplifier and passe...

Страница 20: ...is shown on the vertical axis and the B operating voltage window range of 5 25 V is shown on the horizontal axis The dynamic range is also shown on the figure as the smaller green square The TekFlex s...

Страница 21: ...operating voltage for the TekFlex solder in tips the dynamic range square labeled Small Signal AC can be moved around within the limits of the operating voltage window by adjusting the A and B offset...

Страница 22: ...nnecting to the probe input and output signal ports are de embedded to remove interconnect losses and signal path imperfections TekFlex probe tip signal performance is measured using a 4 port VNA meas...

Страница 23: ...wing figures show the effect of input wire length variation on measured responses Note that these measurements in these images were made using a 20 Ghz P7720 probe Figure 16 P77STFLXA solder tip attac...

Страница 24: ...older tip attached with 200 mils 5 08 mm wires rise time 34 ps Figure 20 P77STFLXA solder tip attached with 300 mils 7 62 mm wires rise time 42 8 ps The following table shows the rise time and oversho...

Страница 25: ...solder in tips is 4 V to 4 V which is adjusted using the Probe Setup screen of the oscilloscope or the offset knobs on the oscilloscope front panel Using the offset voltage controls it is possible to...

Страница 26: ...d Offset B settings are both adjusted to match the DC common mode voltage of the A and B input signals A B 2 The differential Offset voltage should be set manually to the center of the signal voltage...

Страница 27: ...sonable to try to make a skew measurement by directly comparing the A and B signal timing Although it is possible to display both the single ended A and B signals that make up the differential signal...

Страница 28: ...fferential amplifier used to make differential measurements that reject any voltage common to the inputs and amplifies any difference between the inputs Voltage that is common to both inputs is often...

Страница 29: ...ower the input impedance of the probe relative to the source impedance the lower the CMRR for a given source impedance imbalance Differences in the source impedance driving the two inputs lowers the C...

Страница 30: ...log S32 S31 B Mode A typical isolation plot for the TDP7700 Series probes using a TekFlex solder tip is shown in the following figure When the probe is used with TekFlex solder tips note that channel...

Страница 31: ...nvironmental on page 27 Output zero typical 4 mV Linearity typical 1 Termination voltage range typical 2 5 mV Overload indicator range typical P77C292MM tip only The Overload indicator is active when...

Страница 32: ...4 65 mV RMS 4 65 mV RMS 4 65 mV RMS TDP7706 4 1 mV RMS 4 1 mV RMS 4 1 mV RMS TDP7704 4 1 mV RMS 4 1 mV RMS 4 1 mV RMS System Noise Typical Probe A B mode C mode D mode TDP7710 3 6 mV RMS 2 8 mV RMS 3...

Страница 33: ...10 V to 10 V SMA adapter 4 V to 4 V Input range typical Solder in tips Single ended Differential 2 5 Vpp 5 0 Vpp Browser Single ended Differential 6 0 Vpp 12 0 Vpp SMA adapter Single ended Differenti...

Страница 34: ...Figure 28 P77STCABL SE impedance Figure 29 P77STFLXA differential impedance Figure 30 PST77FLXA SE impedance Specifications TDP7700 Series TriMode Probes Technical Reference 26...

Страница 35: ...rating 0 C to 50 C 32 F to 122 F Non Operating 20 C to 60 C 4 F to 140 F Cable and solder in tips Operating 35 C to 85 C 31 F to 185 F Non Operating 35 C to 85 C 31 F to 185 F SMA adapter Operating 35...

Страница 36: ...Nonoperating 5 to 90 RH Relative Humidity at up to 40 C 5 to 55 RH above 40 C up to 60 C non condensing Specifications TDP7700 Series TriMode Probes Technical Reference 28...

Страница 37: ...to a channel on the oscilloscope The LED on the tip should light up after loading 2 Set the probe to Differential A B mode 3 Adjust the vertical resolution so the noise is on the screen and isn t cli...

Страница 38: ...Mode rejection ratio 21 DMRR 21 DSP correction filtering 14 E error conditions LED indicators 2 I input network 18 input voltage 9 L LED indicators 2 O offset voltage 10 operating voltage window 12 op...

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