Wavetek ANT-20, Operating Manual

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ANT-20/ANT-20E Broadband Analyzer/Generator
Operation O-21
4.4.2 “Edit Signal Structure”
The “PHYSICAL” button brings the “Signal Structure” VI to the front if it was previously loaded
using the Application Manager. The relevant parameters such as physical interface, bit rate,
frame structure or mapping, etc. are set from this VI.
This button is provided for both Tx and Rx sides in “Looped” topology. The buttons both perform
the same action.
When the “ATM Test Control” VI has been opened, settings in the “Signal Structure” VI can only
be made via the mentioned “PHYSICAL” button. Direct opening of the “Signal Structure” VI by
the Application Manager will cause disabling most of the edit boxes. This avoids undesired
effects during instrument settings.
Note: Overhead bytes of the physical frame can be configured with the separate “Overhead
Generator” VI.
4.5 Signaling emulation
The check box activates signaling emulation.
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Note: Signaling can only be activated if “Emulate” topology has been selected.
To configure the signaling, open the “Instrument configuration - Signaling Protocol”
dialog using the “SIG”-button.
4.5.1 The “Signaling Protocol” dialog
This dialog is used to configure the signaling and to set the instrument ATM address (own call
address). You should normally always enter an instrument address. This address is used as the
called address in self-call mode.
Fig. O-21 The “Signaling Protocol” sub dialog
Check box checked: Allow switched virtual connections (SVC).
Check box unchecked: Only allow permanent virtual connections (PVC).
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