BNC 577 - Manual (Page 22)

Model 577 Operating Manual 21
The 577 will ignore incoming triggers until all channels have fully completed their assigned pulses, even if that
channel is disabled. For example if all channels were set to 100
µs pulse widths and one channel had a 50 µs
delay, even if that channel was disabled, the 577 could not be retriggered faster than 150 µs. To ensure this does
not cause triggering problems set unused channels to have a combined delay and width time less than the
desired trigger rate.
When the system is in Continuous, Single Shot, or Burst mode with a trigger source enabled the 577 will
generated one T
0
pulse for every incoming trigger pulse. But if system is in Duty Cycle mode the first incoming
trigger will start the 577 pulsing and every trigger after the initial one will be ignored until the system is re-armed.
The in the Channel Menu the second soft key from right is the Channel Gate selection sub-menu. To change if
the Gate is Active High/Low or disabled for each channel press the Gate soft key. If the Dual Trigger option has
been enabled the Gate soft key in the channel menu will now allow the user to see which input will be the trigger
source for that channel.
7.4.2 Saving and Loading Configurations
To Save and Recall a unit configuration select the Storage Menu with the Menu soft key. Select the desired
number location to save the configuration, press the Save soft key, and then confirm the choice. Also from this
menu a previously saved configuration can be loaded by selecting the number location to be recalled, then
pressing and confirming with the Load soft key. The system can save and recall up to 16 configurations. The unit
also ships with an uncorrectable factory default configuration that is located in Config 0 (Recall 0 by pressing the
Load Dflt soft key).