Product Manual

291, 292, 294
Users Manual
11-4
Warnings are given when either a modulation depth or output amplitude change has
caused clipping; the new setting is accepted but it must either be changed back or the
other parameter must also be changed to avoid the contention.
When
SCM is selected the screen has an additional soft-key labeled level; selecting
this key permits the peak carrier output level to be set directly from the keyboard or by
the rotary control. The maximum output level that can be set is 10 V p-p.
When internal SCM is selected for a channel both the amplitude control of that channel
and of the previous channel (which is the modulation source) are disabled. The
AMPLITUDE
set-up screen of the channel being modulated shows the message
fixed by SCM.
The AMPLITUDE screen of the previous channel shows the
message
Set by CHx mod and its status screen shows the message •x to indicate
that it is being used as a source for channel x.
Internal modulation cannot be used with internal or external sum.