Working with the Tunable Laser Source
Tunable Laser Source
21
Setting the Sweep Parameters
To add or delete steps from the lists, see
Adding Items on the Current Lists
on page 17 and
Deleting Items from the Current Lists
on page 18.
You can also set the Pause length between the steps by entering the
desired value in 59:999 format.
Selecting the Trigger Option
You can toggle the Trigger option on or off by checking the box in the
Synchronization area of the Sweep setup menu.
The IQ-2600B features Trigger In and Out connectors. When the trigger
option is set to on, the Trigger In will wait for signals. The Trigger Out is
always active and emits a signal for each one-way pass (in Continuous
mode) or step (in Stepped mode) the system does during the sweep.
The synchronization feature uses a TTL, 5 V signal. The synchronisation is
achieved on the signal’s rising edge. The pulse width of the Trigger In signal
must be larger than 1 µs. The pulse width of the Trigger Out signal is 8 µs.
Trigger Option in Continuous Mode
The sweep will begin when the first synchronization signal is received at
the In port. When a pass (one way) is completed, the system waits for
another synchronization signal to move again.
If the synchronization signal arrives before the sweep is completed, it is
kept in memory to be used on the next pass. The memory keeps only one
synchronization signal in advance; if the system receives more than one
synchronization signal before the sweep is completed, only the first signal
will be kept.
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