TDR
- Updated2023-02-17
- 3 minute(s) read
TDR
Measures propagation delays through cables, connectors, and load boards using Time-Domain Reflectometry (TDR).
Ensure that the channels and pins you select are connected to an open circuit.
Inputs/Outputs
apply offsets
A Boolean that specifies whether to apply the measured TDR offsets.
| True | TDR offsets are applied. |
| False | TDR offsets are not applied. |
If you need to adjust the measured offsets prior to applying, set this input to False, and call the niDigital Apply TDR Offsets node to specify the adjusted TDR offsets values.
Default value: True
session in
Instrument session obtained from the niDigital Initialize with Optionsnode.
channel list
List of channel names or list of pins. Do not pass a mix of channel names and pin names.
An empty string denotes all digital pattern instrument channels.
Specify channel names using the form PXI1Slot3/0,2-3 or PXI1Slot3/0,PXI1Slot3/2-3, where PXI1Slot3 is the instrument resource name and 0, 2, 3 are channel names.
To specify channels from multiple instruments, use the form PXI1Slot3/0,PXI1Slot3/2-3,PXI1Slot4/2-3. The instruments must be in the same chassis.
Site Considerations and Syntax
Pin names and pin groups apply to all enabled sites, unless the pin name explicitly specifies the site. You can specify a pin in a specific site using the form siteN/pinName, where N is the site number. This node ignores pins that are not mapped to the digital pattern instrument.
error in
Error conditions that occur before this node runs.
The node responds to this input according to standard error behavior.
Default value: No error
session out
Handle that identifies the session in all subsequent NI-Digital node calls.
offsets
Measured TDR offsets specified in seconds.
error out
Error information.
The node produces this output according to standard error behavior.