A
Figure A-7. HP-IB Connector
Caution
HP products delivered now are equipped with connectors
having ISO metric- threaded lock screws and stud mounts (ISO
M3.5
2
0.6) that are black in color. Earlier connectors may have
lock screws and stud mounts with imperial-threaded lock screws
and stud mounts (6-32 UNC) that have a shiny nickel nish.
Caution
It is recommended that you do not stack more than three
connectors, one on top of the other.
Hand-tighten the connector lock screws. Do not use a
screwdriver.
HP-IB Logic Levels
The tunable laser source HP-IB lines use standard TTL logic, as follows:
True = Low = digital ground or 0Vdc to 0.4Vdc
False = High = open or 2.5Vdc to 5Vdc
All HP-IB lines have LOW assertion states. High states are held at 3.0Vdc by
pull-ups within the instrument. When a line functions as an input, it requires
approximately 3.2mA to pull it low through a closure to digital ground. When
a line functions as an output, it will sink up to 48mA in the low state and
approximately 0.6mA in the high state.
Installation A-11
To Next Page
Loading...
