Filter
Top Products
182 Chapter 5
If You Have a Problem
Problem Symptoms and Solutions
Measurement Keys Do Not Appear after Pressing the
Mode Key
Symptom: After pressing the MODE key, you have selected a particular
mode (like
Basic, Service, or one of the measurement personalities), but
the menu for the mode you have selected does not appear on the
softkeys.
Solution: If you were already in the mode that you selected, you must
press the
MEASURE key to display the available measurements.
Instrument Power-On Problem
Symptom: The instrument will not power-on. The instrument is
plugged in, but the green LED above the front panel power switch is not
on. The yellow standby LED may be flashing or may be extinguished.
Something appears to be causing the instrument power supply to shut
down.
Solution: An external device or internal assembly is causing the
instrument to shut down, or the power supply may be in thermal
shutdown. Inspect the instrument to ensure that it is receiving
adequate air flow. Disconnect all devices from the rear panel and
remove anything connected to the front panel probe power jack. If after
powering the instrument off, the instrument powers on, determine
which device caused the problem.
LAN Communication Problem
Symptom: You cannot communicate with the instrument over the
LAN.
Solution: Make sure the correct IP address, subnet mask, and host
name are stored in the instrument. Press
System, Config I/O, then read
the IP address, subnet mask and host name which are shown on the
corresponding softkey labels. The default subnet mask of 255.255.0.0
should be sufficient for most closed network applications. If the
Restore
Sys Defaults
key has been used recently, the IP address, subnet mask,
and host name will have been reset to factory defaults. (The IP address
is changed to
10.10.10.10., the subnet mask is changed to
255.255.0.0., and the host name is set to VSA.)
Instrument Keyboard is Locked
Symptom: The keyboard is locked and does not respond to attempts to
activate features.
Solution: A programmer can lock the keyboard remotely using the
SCPI
KLOCk command. You can confirm if this is the reason the
keyboard is locked by examining the annunciator bar; a message saying
Klock will appear if this command has been executed.