The Front Panel Indicators At A Glance - Keysight 53147A Operating And Programming Manual

The Front Panel Indicators at a Glance

There are five front-panel LED indicators. These are listed and described in the
following table.
Ind icator
Keysight 53147A/148A/149A Operating and Programming Guide
Description
The Standby indicator is lit whenever the power cord is connected (or the
battery option is supplying power), and the POWER switch on the front
POWER
panel is OFF (out). During Standby, most of the instrument's circuits do not
receive power. The cooling fan and the timebase are powered to maintain
temperature stability in the timebase components, and if the Battery option
is installed, the battery-charging circuits are powered. When you press the
Standby
POWER switch on the front panel, the Standby indicator goes off, and all of
the instrument's circuits receive power.
The function LEDs light to indicate which of the instrument's functions are
displayed. If frequency is the only measurement displayed (the Power
Meter and the DVM are disabled), only the Counter LED is lit. If both
Counter
frequency and power measurements are displayed (the Counter and the
Power Meter are enabled), the Counter and Power Meter LEDs are lit. If a
Power
Meter
voltage reading and a power reading are displayed (the DVM and the Power
Meter are enabled), the Power Meter and DVM LEDs are lit. If only a voltage
DVM
reading is displayed (the DVM is the only function enabled), the DVM LED
is lit, and the Counter and Power Meter LEDs are not lit.
When the LED indicator between the arrow keys flashes, the arrow keys
can be used to navigate and change values in menus.
When you make a change in a menu, always press the Enter key to save the
setting and exit the menu.
The Gate LED indicator flashes to indicate the rate at which Counter
COUNT
measurements are triggered. The flash rate of the LED varies with the
Gate
settings of the measurement rate (Rate key) and the Counter measurement
resolution (Resol key). The flash rate of the LED provides a rough indication
Chan
of the number of Counter measurements that are being taken in a given
Select
period of time.
Getting Started
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