The "Atm Layer Qos - Looped Topology" Test Type - Wavetek ANT-20 Operating Manual

ANT-20/ANT-20E
The "Test Setup" dialog consists of the following sections:
Section
Test type (a)
Virtual Channel
Setup (b)
Configure Test (c)
Action buttons(d)
1 Names as specified in the Channel Editor
Table O-15
5.3

The "ATM Layer QoS - Looped Topology" test type

This test type is intended for ATM layer QoS measurements in Looped topology. This means
that the transmitter and receiver are connected to different ports of the device under test (DUT),
with the Tx signal looped back to the receiver.
Characteristics
• Measurement of permanent virtual connections
(PVC)
• Up to four virtual channels possible
• Cell delay measurements are possible
• Unidirectional or bi-directional channels can be
tested. The parameters for the backward direction are
ignored for bi-directional channels..
Basic instrument settings
• "Looped" topology
The pictogram shown opposite appears in the workspace
of the VI.
Operation
Meaning
List of test types, depends on the actual instrument configuration.
Display of current virtual connection mode as a pictogram with the channel
1
names .
Button for opening the "Test Setup - <...>" dialog to configure the test.
(Sec. 5.9, Page O-32)
OK: Confirm the selected test type and/or parameter settings in the
"Test Setup - <...>" dialog and return to the main window.
Cancel: Cancel the settings
"Test Setup" dialog sections
Broadband Analyzer/Generator
"Point-to-point", "Calling" or "Called" connection
mode
"Looped" topology
"Looped" or "Self-Call" connection mode
O-27