ESI VideoBridge 2150, Руководство по обслуживанию

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A. 2.7 Bus Connector
Instruments that connect to the IEEE-488 bus use a 24 contact, trap i-
zoidal, polariz ed shell connector.
connector are shown in Table A-3.
The contact assignments for the
Table A-3 . IEEE-488 Bus Connector Contact Assignments
CONTACT SIGNAL LINE
CONTACT
SIGNAL LINE
1 010 1 13 010 5
2 010 2 14 010 6
3 010 3 15 010 7
4
010 4 16
010 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)
1 2 SHIELD 24 Gnd LOGIC
NOTE:
Gnd (n) refers to the signal ground return of the
referenced contact.
A.2.8 Instrument Address Selection
Bus addresses for the 2150/2160 are set via switches on the GPIB
interface circuit card (see Figure A-7). Primary bus addresses can be
set over the full range allowed by the IEEE-488 standard:
32 to 62
(decimal) for LISTEN addresses and 64 to 94 (decimal) for TALK ad­
dresses. However, the values of the LISTEN and TALK addresses are not
independent since they share the same switch setting (see Figure
A-7). The address swi tches are set in binary fashion. The LISTEN
address is achieved by the instrument ' s software automatically adding
32 to the switch setting. The TALK address is achieved by adding 64
to the switch setting.
els / i
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