NSN 7025-01-426-2279
Part Details | SYNCHRONOUS SERIAL
7025-01-426-2279
Alternate Parts: SCB1020, SCB-1020, 7025-01-426-2279, 01-426-2279, 7025014262279, 014262279
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 7025-01-426-2279
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| SCB-1020 | 2Z052 | QUA TECH INC |
Technical Data | NSN 7025-01-426-2279
| Characteristic | Specifications |
|---|---|
| GENERAL CHARACTERISTICS ITEM DESCRIPTION | THE SCB-1020 IS AN ASYNCHRONOUS/SYNCHRONOUS CONNUICATION CARD. IT CONTAINS THE UPD7201A MULTI-PROTOCOL SERIAL COMMUNICATIN CONTROLLER TO PERFORM DATA TRANSFER UP TO 256 KBAUD. THE SCB-1020 SUPPORTS ASYNCHRONOUS BIT AND BYTLE ORIENTED PROTOCOLS. THE SYNCHRONOUS PROTOCOLS MAY BE APPLIED TO MONOSYNC AND BISYNC AS WELL AS HDLC AND SDLC OPERTION. THE RS-232 SIGNALS ARE INTERFACED TO EXTERNAL DEVIVE VIA A D-25 CONNECTORWHICH PROVIDES SHIELDING AGAINST ENVIRONMENTAL NOISE.OTHER CHARACTERISTICS OF THE SCB-1020 INCLUDE JUMPER SELECTABLE DMA REQUEST (CHANNELS 1 &3) AND JUMPER SELECTABLE INTERRUPT REQUESTS (IRQ2-IRQ70). THE SCB-1020 CONTAINS SWITCH SELECTABLE ADDRESSING TO AVOID CONFLICTS WITH OTHER DEVICES IN THE COMPUTER. PROGRAMMABLE ON-BOARD CLOCKS PROVIDE DATA RATES FOR THE UPD7201A |