once over the maximum display of 999.99 %. This function will be used for
lock range. If select this function during auto-ranging, it will lock to existing
range. Press
then followed by to exit percentage function
.
Notes:
1. The Auto-ranging Relative mode or auto-ranging dynamic record will be closed
when percentage function is set. For relative or dynamic record function should
be selected again if necessary.
2. For frequency measurement, it will be locked to the range user is in when user
enters this mode will become the selected range.
3-12 Selecting Trigger mode
This meter has two types of trigger mode. One is internal to continuous update
reading, and the other one is external control by bus or front panel. The default
trigger mode is internal after the power up.
The external trigger is used with delay settling has been set by meter automatically. The
amount of trigger delay varies depending on different function.
When external trigger is enabled, the meter determines the ranges for the primary
display based on the input at that time. The meter is then ready to begin measuring the
input on the optimum range as soon as the trigger is received. If the input changes so
that either display auto ranges after the trigger is received, the auto ranging response
times may be required before each measuring result is displayed.
The meter takes measurements when it is triggered to do so. The two trigger types
available on the meter fall into two basic categories:
An "internal trigger" triggers measurements continuously.
An "external trigger" triggers a measurement only at the direction of the user.
A measurement can be externally triggered in three ways:
1. Front panel by TRIG key.
2. RS-232 interface. Please refer to chapter 6 for TGS<n> and TGM<n>.
3. GPIB interface. Please refer to chapter 7 for related commands.
38
To Next Page
Loading...