Teledyne LeCroy QPHY-DDR2 - Manual (Page 31)

QPHY-DDR2 Software Option
QPHY-DDR2-OM-E Rev A
31
QPHY-DDR2 VARIABLES
General Variables
The following variables are used by all configurations. They can be used in conjunction with the test selection and
limit set selection to create custom configurations.
DUT Speed Grade in MT/s
Transfer speed of the DUT. Used to set the oscilloscope timebase and sampling rate, see Clock Period Per
Screen Division variable for more explanation. Choose between: 400, 533, 667 and 800 MT/s. Default is 667
MT/s.
DQ Signal Name
Select name of data (DQ) SUT. Choose between available DDR signal names. Default is DQ0.
DQS Signal Name
Select name of strobe (DQS) SUT. Choose between available DDR signal names. Default is DQS0.
Clock Signal Name
Select name of clock (CK) SUT. Choose between available DDR signal names. Default is CK.
DUT Power Supply VDDQ
Value of VDDQ used to compute test limits as specified by Jedec standard. Default is 1.8 V.
4 th Probe Names
DQSp Signal Name
Select the name of the positive strobe (DQSp) SUT. Choose between available DDR signal names. Default is
DQS0p.
DQSn Signal Name
Select the name of the negative strobe (DQSn) SUT. Choose between available DDR signal names. Default is
DQS0n.
ADD/CTRL signal name
Select the name of the Address or Control SUT. Choose between available DDR signal names. Default is A0.
Clock Positive Signal Name
Select the name of the positive clock (CKp) SUT. Choose between available DDR signal names. Default is CKp.
Clock Negative Signal Name
Select the name of the negative clock (CKn) SUT. Choose between available DDR signal names. Default is CKn.
DM Signal Name
Select the name of the Data Mask SUT. Choose between available DDR signal names. Default is DM0.
Script Settings
Save Acquired Waveforms
Saved waveforms can be used later in demonstration or optimized version of script. Choose between Yes or No.
The default is No. This setting is ignored (no save) if using stored waveforms is enabled and in Demo mode.