IEEE-488 GPIB / IEC 625 cable assembly | |||
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Cable assembly ( colour grey) to IEEE-488 GPIB /IEC 625 . Designed to facilitate rapid interconnection up up to 15 programmable instruments ( in star or daisy chain configuration ) or control equipments equipped with IEEE-488 GPIB IEC 625 ( also known as HPIB ) communication link capable of , talking ,listening , talking and listening and or controlling . Each end of the assembly consists of a back to back 24-way male and female connector (rack and panel type ) with captive locking screws . The cable contains 24 conductors of which 16 are used for signal lines and the balance used for logic ground returns and overall sheild . Lines DAV , NRFD , NDAC, IFC , SRQ and ATN lines are each twisted together with a ground wire to form twisted pairs as detailed in the connector contact assignment table show below . Available in 1m and 2m lengths. Voltage rating 200V d.c. Current rating 5A per contact . Contact resitance <10M ohm . Contact material , gold over copper . connector contact assignments A contact assignment of the cable connector and the device connector is as shown below: | |||
| contact | signal line | contact | signal line |
| 1 | DIO 1 | 13 | DIO 5 |
| 2 | DIO 2 | 14 | DIO 6 |
| 3 | DIO 3 | 15 | DIO 7 |
| 4 | DIO 41 | 16 | DIO 8 |
| 5 | EOI | 17 | REN |
| 6 | DAV | 18 | Gnd. (6) |
| 7 | NRFD | 19 | Gnd. (7) |
| 8 | NDAC | 20 | Gnd. (8) |
| 9 | IFC | 21 | Gnd. (9) |
| 10 | SRQ | 22 | Gnd. (10) |
| 11 | ATN | 23 | Gnd. (11) |
| 12 | SHEILD | 24 | Gnd. LOGIC |
| Note : Gnd.(n) refers to the signal ground return of the referenced contact. | |||