---
type: product
schema_version: 1
stock_number: "73565-2"
canonical_url: "https://www.artisantg.com/TestMeasurement/73565-2/Tektronix-Adherent-AD991-Stream-Source"
json_url: "https://www.artisantg.com/TestMeasurement/73565-2/Tektronix-Adherent-AD991-Stream-Source.json"
generated_at: "2026-11-07T11:02:43.221Z"
last_updated: "2026-05-29T14:26:29.303-05:00"
---

# Tektronix / Adherent AD991 Stream Source

_Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._

## Summary

- Manufacturer: Adherent
- Model: AD991
- Condition: Used and in Excellent Condition
- Price: $2,495.00 USD
- Availability: In stock, 1 available
- Warranty: 1-Year Warranty with 30-Day Return Guarantee
- ITAR restricted: No
- Shipping weight: 45 lb
- Shipping dimensions: 32X24X20 in

## Categories

- Test Equipment > Electrical Test > TV and Video Test (primary)

## Details

This Tektronix / Adherent AD991 Stream Source is used and in excellent condition. This unit comes with a user manual and a tutorial document.

### Parts and Accesories

- Pentium MMX CPU 233MHz
- 64 MB
- Windows NT 4.0
- (1) Keyboard
- (1) BNC Cable

## Images

- <https://www.artisantg.com/itemimages/adherent_ad991_view5.jpg>
