Front Panel Overview

Introduction to the Agilent 81133A/81134A Pulse Generator

LEDs The front panel of the 81133A/81134A pulse generator contains the

following LEDs:

LED

Description

 

 

Unlock

When this LED is lit, the frequency entered for the external clock

 

does not match the actual input from the external clock. In this

 

state, the internal PLL is not locked and the instrument's outputs

 

may not be within specification.

 

You have to either reenter the frequency of the external clock, or ex-

 

ecute the Measure function. See “Clock Sources” on page 73 for

 

details.

Active

When lit, indicates that the instrument is either in external or direct

 

external clock mode. A valid external clock signal has to be applied

 

to the clock input.

 

If not lit, the internal clock source is used.

Armed

Indicates that the instrument is waiting for a signal at the Start In-

 

put.

 

When the specified signal arrives, the instrument starts generating

 

signals.

Port LEDs

Indicate the status of the port. When the LED is lit, the port is

 

active.

 

 

Agilent 81133A/81134A Pulse Generator User’s Guide, January 2005

17

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Agilent Technologies 5988-7401EN manual Description

5988-7401EN specifications

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