When the PMD Trace scan function is selected, the following screen is displayed:
A.
CONTINUOUS TRACE:
In continuous trace mode, the PMDPro varies the PMD along the selected
curve using the minimum DGD step size of 0.1 ps. The user can select the
DGD variation rate, in ps/s. The setup screens for continuous trace mode are
as follows:
Use the up and down arrows to move between scan setup options and the
ENTER key to access the setup screen for the selected option.
a.
START:
This option starts the scan. Use the other options to perform the scan
setup, then return to option a) to begin the scan.
While the scan is running, the screen displays:
e. MODE: BI-DIREC
↑
f. CON RATE: _ _1.0 ps/s
c. STEP DIRECTION: UP
↑
d. CYCLES: _ _10 Count
↓
CYC: _ _ _1/10
DIR:
Å
63.6 ps
2002.7ps2
a. START (con TRACE)
↓
b. Rng: _0.00, 64.4 ps
A. CONTINUOUS TRACE
B. STEP TRACE
CYC: number of completed cycles/ total number of cycles to run.
DIR: scan
direction.
→←
: bidirectional
→
:
unidirectional, increasing DGD
←
:
unidirectional, decreasing DGD
The bottom line displays the current DGD and SOPMD values.
Document #: GP-UM-PMD-1000-21
Page 22 of 122
