Agilent Technologies 93000 SOC Series Training Manual page 238

Timing Setup
Edge Delay Option
Cursor and Marker Option
Description Option
238
Period Option
The Period Option can be used to enter
• the tester period
• the clock source
For each Waveform set, you can specify whether the clock source is
internal (intern) or external (AMC [Alternate Master Clock]). The
use of the AMC reduces the noise and jitter of the signal and is used
for example for high speed applications.
For this exercise we will only use the internal clock.
The Edge Delay Option displays
• the edge number (e1 for edge 1)
• the use of each edge: D for drive, R for receive, nothing if not used
• the delay of each edge
Most of the time you will use the Edge Delay Option to control the exact
positions of the edges.
The Cursor and Marker Option provides
• a cursor for absolute and relative timing settings
• a marker for absolute and relative timing settings
The Description Option can be used to enter
• the waveform set description
• the timing set description
Later, when building up complete test flows, you will identify the sets
by means of these descriptions.
Setting up the Timing
When setting up the first tests for a device, you should define a relaxed
timing: not full speed, relaxed edge placements. Later, you can use the
test functions to stress the device.
Before you start setting up the timing for the individual pins and pin
groups, you have to enter the period. You do this in the period display
option, which is shown initially after starting the Timing Setup
window:
1 Enter the desired period in the period edit box.
The units are ns. The allowed range depends on the chosen access
time of your test system.
Agilent 93000 SOC Series User Training Part 1, October 2004
9-9 Fixed Timing