Teledyne LeCroy IBTrainer - IBTrainer Users Manual - Manual (Page 45)

Running the Test Testing with the User Interface
CATC IBTrainer InfiniBand Exerciser, August 2002
45
How to Trigger the Transmission from an
External Signal
With the software, you can specify in the properties of a given packet
stored in the transmit memory that the IBTrainer waits for an external
trigger signal before sending it and the following packets.
1 Connect the instrument generating the trigger signal to the IBTrainer
via the Ext. Input connector located on the rear of the IBTrainer. The
cable should have following characteristics: LVTTL level, low active,
internal termination: 50 ohm to +2.5V, level sensitive.
The associated LED indicates trigger activity.
2 In the software, create a new packet.
– or –
Use a pre-defined packet.
3 Drag and drop this packet to the Transmit Memory list.
4 Double-click the packet.
The dialog box displaying the properties of the packet opens.
5 Click Advanced attributes.
6 Enter 1 (True) in the Wait Trigger In box.
7 Click Ok.
8 On the toolbar, click the Run button.
The IBTrainer waits for the trigger signal to send the set packet and
all following packets to the DUT.
N O T E You can also use the IBTrainer to trigger another test device when a
specific packet is sent. Connect your cable (characteristics: LVTTL level,
low active) to the Ext. Output connector. In the dialog box displaying the
packet’s properties, click Show advanced attributes and set Assert
Trigger Out to 1 (True).