Loopback Tester: a synchronous communications circuit diagnostic device
The Loopback Tester is an Intel SBC 86/12A Single Board Computer and an Intel SBC 534 Communications Expansion Board configured and programmed to perform various basic or less. These tests include: (1) Data Communications Equipment (DCE) transmit timing detection (2) data rate measurement (3) instantaneous loopback indication and (4) bit error rate testing. It requires no initial setup after plug in, and can be used to locate the source of communications loss in a circuit. It can also be used to determine when crypto variable mismatch problems are the source of communications loss. This report discusses the functionality of the Loopback Tester as a diagnostic device. It also discusses the hardware and software which implements this simple yet reliable device.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA). Computer Communications Design Div.
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5307530
- Report Number(s):
- SAND-85-0866; ON: DE86014935
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
Similar Records
Digital circuit analyzer: logic board tester makes a powerful diagnostic tool in design, production, and maintenance
Hardware on the horizons. A perspective on LSI/VLSI data communications controllers