Product Manual

291, 292, 294
Users Manual
2. Entering an amplitude of 25 V p-p. The error message:
Maximum output level exceeded is shown.
3. Entering a dc offset of 20 V. The error message:
Maximum DC offset exceeded is shown.
The messages remain on the display for approximately two seconds. The last two
messages can be viewed again by pressing the last error… soft-key on the
UTILITY
screen. Refer to the section System Operations from the Utility Screen for
more information.
Each message has a number and the full list appears in appendix B.
The default set-up is for all warning and error messages to be displayed and for a beep to
sound with each message. This set-up can be changed on the error… menu on the
UTILITY
screen. The error menu is shown below:
error beep: ON
error message: ON
warn beep: ON
warn message: ON
Each feature can be turned on and off with alternate presses of the associated soft-key;
the factory default is for all features to be on.
Synchronization Output
SYNC OUT is a multifunction CMOS/TTL level output that can be automatically or
manually set to be any of the following:
waveform sync: A square wave with 50 % duty cycle at the main waveform
frequency, or a pulse coincident with the first few points of
an arbitrary waveform. Can be selected for all waveforms.
position marker: If an arbitrary waveform is selected, any point(s) on the
main waveform may have associated marker bit(s) set high
or low. These will then show as pulses when
position marker is selected.
burst done: Produces a pulse coincident with the last cycle of the burst.
sequence sync: Produces a pulse coincident with the end of a waveform
sequence.
trigger: Selects the current trigger signal (internal, external or
manual). Useful for synchronizing burst or gated signals.
sweep sync: Outputs the sweep trigger and sweep marker signals.
phase lock: Used to synchronize two or more generators. Produces a
positive edge at the 0 º phase point.
The setting up of the signals themselves is discussed in the relevant sections later in this
manual. Triggering is described in the Triggered Burst and Gate chapter and
position marker in the Arbitrary Waveform Generation chapter.
Pressing the
SYNC OUT key calls the SYNC OUT set-up screen:
5-6