Specifications
Table 1-1: Signal acquisition system characteristics (cont.)
Characteristic
Description
Sensitivity Range 2 m V/div to 5 V/div in 1-2-5 sequence with the probe attenuation set to 1X.
The Display Gain Variable function allows the user to vary the vertical display gain continuously over the
full range.
Display Gain Variable
Resolution is that of the coarse gain from w hich these data are constructed. Fine gain values (for
instance 120 mV/div) are acquired at the next higher coarse gain setting (in this case 200 mV/div).
The Display Gain Va riable is achieved by digital multiplication of the data to obtain the settings between
the 1-2-5 gain settings.
Hard copy outputs to printer will be exactly the same as seen on screen even when the Display Gain
Variable is used.
However, WAVEFORM DATA obtained through the I/O interface is limited to the 1-2-5 gain settings.
1X, 10X, 20X, 50X, 100X, 500X, 1000X voltage attenuation.
5, 1, 500 m, 200 m, 20 m, 10 m, 1 m V/A current scale factor.
Probe Scale Factors
This adjusts the display scale factor of the instrument to accommodate various probe types.
Accuracy of the probe used must be added to the accuracy specifications of instrument.
No automatic probe interface is provided, so you must v erify that the settings match the probe
characteristics. The probe check function allows setting of the proper attenuation for voltage probes.
Acquisition Modes
Sample, Peak Detect, Average
Envelope mode not provided
Front panel settings are retained when the instrument power is turned off and on with the power switch.
The settings are retained when the line power is turned off and on.
Retained Front Panel
Settings
The instrument periodically saves front panel settings after settings are changed. There is a delay of
three seconds after the last change and before the storage of the settings in memory.
All Units:
Channel 1 - Channel 2
Channel 2 - Channel 1
Channel 1 + Channel 2
Channel 1 * Channel 2 FFT
Math Modes
4 channel units (TDS20X4C):
Channel 3 - Channel 4
Channel 4 - Channel 3
Channel 3 + Channel 4
Channel 3 * Channel 4
Voltage Measurement
Functions
Mean, Cyc RMS, Peak-to-Peak, Max, Min, RMS, CursorRMS
This is the d ifference between the measured DC gain and the nominal DC gain, divided by the nominal
DC gain and expressed as a percent.
±3%, 5 V/div through 10 mV/div
√ DC Gain Accuracy,
Sample or Average
Acquisition
±4%, 5 mV/div and 2 mV/div
1–2 TDS2000C Series Oscilloscope Service Manual
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