11801

The Tektronix 11801 is a digital sampling oscilloscope that takes four 11800 series plug-in sampling modules. Input channel capacity can be expanded up to 68 sampling modules (136 channels) using up to four SM-11 Multi-Channel Units if option 1M is installed in the 11801.

Tektronix 11801

Digital sampling scope

Produced from 1989 to 1998+

Manuals

– 11801 –

11801 Service Manual

– 11801A –

– 11801B –

– 11801C –

– Additional Information –

Tektronix 11801, 11802, and SM11 Diagnostics

ROM Images

File	Pos.	Checksum

(All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The 11801 design team included Murlan Kaufman, Stan Kaveckis, Agoston Agoston, John Carlson, John Rettig, Jon Lueker, and Roy Lewallen.

The 11801A update was introduced in 1991, the 11801B in 1994, and the 11801C by 1997.

The CSA803 is effectively a variant of the 11801.

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 V_p-p (1x), 10 V_p-p (10x), 2.5 V_p-p prescaler
Trigger Sensitivity	50 mV, DC − 4 GHz, AC coupled trigger prescaler to 10 GHz
CRT	Plain 11801: 9" monochrome, touch screen 11801A/B/C: 8½" color, touch screen

Software

Tekdump screen capture software for Unix written by Steve Tell: Web page / Download
TSC screen capture portable software written by Joel Koltner

Prices

1990: $23,500 (~$55,300 in 2023 dollars)

Links

Tek 11801 ROMs / Manuals @ KO4BB

Documents Referencing 11801

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

Pictures

11801 with monochrome screen
11801A
11801A option 1M
11801A option 1M
11801A option 1M on top of SM-11
11801C with SD-24 head installed