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 4 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 11801A update was introduced in 1991, the 11801B in 1994.

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