Time Scale Accuracy (Tsa) Test - Keysight Technologies 90000 A Series Service Manual

Time Scale Accuracy (TSA) Test

This procedure verifies the maximum TSA specification for the oscilloscope.
Description
TSA refers to the absolute accuracy of an oscilloscope's time scale. Because TSA
depends directly on frequency of a crystal oscillator, it is comprised of two
components: an initial accuracy component and an aging component.
The initial accuracy component applies to the oscilloscope's accuracy immediately
after a time base calibration, whether performed at the factory, by a customer, or
by a Keysight service center. The aging component scales linearly from the time
since the last time base calibration, and adds to the initial accuracy component.
Equipment Required
Description
Synthesized sine
wave source
10 MHz frequency
reference
SMA cable
RF cable
Adapters, assorted
90000 A-Series Service Guide
Critical Specifications
Output Frequency: ≥ 10 MHz
Output Amplitude: 0 dBm
Frequency Resolution: 0.1 Hz
Output Frequency: 10 MHz
Output amplitude: 0 dBm
Absolute Freq. Error: < ±0.01 ppm
Ω
50 characteristic impedance
SMA connectors
Max frequency: ≥ 50 MHz
Ω
50 characteristic impedance
BNC (m) connectors
Max Frequency: ≥ 50 MHz
3.5 mm (f) to Precision BNC (m)
Testing Performance
Recommended Model/Part #
Keysight E8257D PSG
Keysight 53132A opt. 012
frequency counter
Keysight 8120-4948
Keysight 8120-1840
Keysight 54855-67604
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