User`s guide

Installation 2

Model N6705A User’s Guide 29

Connecting the Digital Port

NOTE

It is good engineering practice to twist and shield all signal wires to and from

the digital connectors. If shielded wire is used, connect only one end of the

shield to chassis ground to prevent ground loops.

An 8-pin connector and a quick-disconnect connector plug are

provided for accessing the digital port functions. The connector plug

accepts wires sizes from AWG 14 to AWG 30. Wire sizes smaller than

AWG 24 are not recommended. Disconnect the connector plug to

make your wire connections.

1. Insert wires

2. Tighten screws

3. Signal common

4. Digital I/O signals

5. FLT/INH signals

6. Output Couple

controls

Information on configuring the digital port is discussed in chapter 4.

The electrical characteristics are described in Appendix A.

Connecting the BNC Connectors

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 or positive-going external

signal to trigger the instrument. The signal must have a minimum

pulse width of 2 microseconds. Trigger input signals are used by the

Arb, Scope, and Data Logger functions.

Trigger Output - Generates a negative-going or positive-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 chapter 4

under “Configuring the Digital Port”. The electrical characteristics

are described in Appendix A.

Input Output

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