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2 Installation
Connecting the BNC Connectors
Installing a Redundant Ground for 400 Hz Operation
44
The rear panel BNC connectors let you apply trigger signals to the
instrument as well as generate trigger signals from the instrument.
This also applies to the digital port.
Trigger Input - Allows a negative-going external signal to trigger the
instrument. The signal must have a minimum pulse width of two
microseconds. Trigger input signals are used by the Arb, Scope, and
Data Logger functions.
Trigger Output - Generates a negative-going 10 microsecond pulse
when a triggered event has occurred on the instrument. Trigger
output signals can be generated by the user-defined voltage or
current Arb functions.
Information on configuring external triggers is found in Appendix C.
The electrical characteristics are described in Appendix A.
Operation at 400 Hz requires the installation of a redundant ground
from the instrument chassis to earth ground. The redundant ground
must be permanently attached to the unit as well as to the earth
ground point.
The following procedure describes how to make the permanent
connection at the unit using one of the two rear panel BNC
connectors. The user must ensure the integrity and permanence of
the connection at the earth ground point.
The following customer-supplied hardware is required:
Ground wire (14/16 AWG)
Uninsulated ring terminal for attaching wire to unit
(Tyco p/n 328976 or equivalent)
Hardware for attaching wire to earth ground point
The following tools are required for installing the redundant
ground:
5/8 inch nut driver
Step 1. Use the nut driver and remove the hex nut (1) from only one of the
BNC connectors. Do not remove the lock washer located behind the
hex nut.
Step 2. Crimp the ring terminal (2) onto the end of the ground wire.
Model N6705 User's Guide
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