CSA803

The Tektronix CSA803 is a digital sampling oscilloscope that takes two 11800 series plug-in sampling modules. The two left plug-in slots are supplying DC only and are supposed to be used for optical to electrical converters like the SD-48.

Manuals – Specifications – Links – Pictures

From the specifications of the CSA803C and the 11801C it seems that they are identical, except for omitting the two left plug-ins and adding the trigger ×10 prescaler function in the CSA803.

Key Specifications

Vertical Resolution	8 bits - 25 points/div
Input Sensitivity	2 to 255 mV/div in 1 mV/div steps
Record Duration	10 ps to 50 ms
Record Length	512, 1024, 2048, 4096, 5120 samples
Sample Rate	up to 200 kHz
Jitter	1.1 ps RMS + 4 ppm of position (typical)
Maximum Trigger Input	1 Vp-p direct, 2.5 Vp-p prescaler
Trigger Sensitivity Direct	50 mVp-p, DC − 4 GHz typical; 100 mV DC − 2.5 GHz (CSA803), DC − 3GHz (CSA803A&C)
Trigger Sensitivity Prescaler CSA803 & CSA803A	< 600 mVp-pV for 2-8 GHz typical; < 2 Vp-pV for 8-10 GHz
Trigger Sensitivity Prescaler CSA803C	< 800 mVp-pV for 2-8 GHz; < 1 Vp-pV for 10-12.5 GHz typical
Display	8½" diagonal color CRT

Options

• 1R − Rack Mount
• 1T − Provides 38 predefined telecommunication masks (option for CSA803A, standard for CSA803C)
• 10 − Deletes Prescaler

Prices

1990: $23,950 ($56,400 in 2023 dollars)

Links

• Fixing a CSA803

Documents Referencing CSA803

Document	Class	Title	Authors	Year	Links
85W-8882.pdf	Application Note	Z-Profile Algorithm		1993	SD-24 • 11801 • 11802 • CSA803

Pictures

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