Agilent Technologies J3972A - Manual (Page 33)

Introduction
Probe Overview
13
OC-3 ATM Interface Status LEDs
The Agilent J3919A ATM interface has LEDs for Activity and Cell Sync
functions. The Agilent J3972A ATM interface additionally has a Fault LED. Refer
to the following list for information on how these LEDs work:
Activity. This green LED is turned on when valid cells are received by the OC-3
ATM interface from the network. When flashing, the frequency shows the amount
of traffic. During periods of steady traffic, the LED may appear to stay on solid.
Cell Sync. This yellow LED is turned on when the OC-3 ATM interface detects a
loss of cell synchronization.
The following LED is on the Agilent J3972A probe only:
Fault. This yellow LED is turned on when the processor on the Agilent J3972A
probe is not running. The Fault LED can turn on during the power-on self-test, but
should be off when the probe is running.
CONFIG Button
The CONFIG button is used to configure the probe from a terminal or to restart
the probe. The CONFIG button is recessed and located on the back of the probe
near the RS-232C connector. You will need to use a narrow, pointed object (like a
pen) to press the CONFIG button.
To configure the probe using a local terminal (or PC emulating a terminal),
connect a terminal to the probe using a null modem cable and push the CONFIG
button to display the probe’s Main Menu. This operation is described in Chapter 2
“Local Terminal Configuration”.
You can restart the probe (with a warm start or cold start) using the CONFIG
button. These functions are described in Chapter 5 “Probe Operation”.