Sifos Technologies PowerSync PSA100, Техническое справочное руководство

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PowerSync Analyzer Reference Manual
March 9, 2010 Sifos Technologies page 127
The total execution time for the above test script on a sample PSE measures 8.1 seconds and produces the following
results:
Vvalid(1,1) = 5.6
Vvalid(1,2) = 6.1
Vvalid(2,1) = 6.1
Vvalid(2,2) = 6.1
Vvalid(3,1) = 6.2
Vvalid(3,2) = 6.1
Vport(1,1) = 47.8
Vport(1,2) = 47.8
Vport(2,1) = 47.6
Vport(2,2) = 47.9
Vport(3,1) = 47.9
Vport(3,2) = 47.9
RgoodMax(1,1) = >=27_K
RgoodMax(1,2) = >=27_K
RgoodMax(2,1) = >=27_K
RgoodMax(2,2) = >=27_K
RgoodMax(3,1) = >=27_K
RgoodMax(3,2) = >=27_K
If the same measurements were to be run on just a single port, the total test time measures 2.1 seconds. Thus, the net
time savings from interlacing across 6 ports would be:
Time Savings = (6 * 2.1 seconds) – 8.1 seconds = 4.5 seconds
For reference, to get these three parameters from the PSE Conformance Test Suite requires running the det_v,
det_range, and powerup_v tests. The total time for those 3 tests on the same PSE measures 125 seconds per port! (Of
course, those tests produce considerably more information as well.)
A second example of time interlacing of tests will recover port voltage and port power capacity across 6 user-selected
ports. Again, this script will take advantage of port interlacing to recover Vport measurements as well as to assess
power capacity.
proc psa_six_pack {args} {
global port
# Inputs: List of 6 test ports in list format
# DUT Assumptions
# Detection Signal: No pre-detection, NRZ, 3 steps, 2 edges, > 600 msec backoff
# Classification Signal: NRZ
# MPS Method: AC
# Initiate Test Time
set t0 [clock clicks -milliseconds]
# Process the Test Port List
set portList $args
if { [llength $portList] != 6 } {
return -code error "Must Specify 6 Ports in Slot,Port format"
}
# Power down all ports and set up valid detection
port 99,99 isolate
iload 99,99 i 0
passive 99,99 r 23 c 0
# Set up measurements to recover port voltages
vdcaverage 99,99 trig on period 200m timeout 10
# Set up triggering for Vport measurement
trig1 99,99 rising level 45
# Initiate voltage measurements on all ports
foreach port $portList {
vdcaverage $port stat
port $port connect
}
# Continued