SCSI NexZo TPO Stranded Dual-Laminated MQT - Test Summary
 

Project: 20185-068 TPO Dual Laminant 250mm span SCSI NexZO

Annex E
Section 		Test Domain Measurement Conditions Test Equipment SPI-3 Acceptable
Values		 Section in T10 SPI 3 & 4 Average Measured Results PASS/FAIL
2.1 Single Ended
Impedance 		Time Rise time at 3nS, Length 3m (10ft) Tie one wire of each pair to shield and ground (only end under test) Time Domain
Refectometer 54750A		 84 -96 ohms 6.3.3 Not measured here
2.2 Differential Time Rise time at 1nS and 3nS, Length 3m (10ft). Test 2nS to 4nS down the cable. All wires floating during test Domain Reflectometer
54750A		 110-135 ohms 6.3.3 115 Ohms
PASS
2.3 Differential
Extended
Distance
Impedance 		Freq Freq sweep 30MHz-600MHz. Length 30m (100ft). All wires floating during test Network Analyzer
8712B		 60 ohms p-p (+/- 30ohm)
range 70 to 130 ohms		 6.3.4 Not measured here
3.1 Single Ended
Capacitance 		Freq Freq Points: 100KHz & 1MHz. Length 3m (10ft). Tie one wire of each pair to shield and ground (only end under test) LCR Meter 4263A 40-66 pF/m (12.19-
20.12pF/ft)		 6.3.5 40.88 (12.46)
PASS
3.2 Differential
Capacitance 		Freq Freq Point: 1MHz & 120 MHz. Length 3m (10ft). All wires floating during test Impedance, Material
Analyzer HP, 4291B		 26-46 pF/m (7.92 - 14.02
pF/ft)		 6.3.5 35.01pf/m (10.67pf/ft)
PASS
na Dielectric
Constant		 Freq Time Freq Sweep 300KHz-600MHz. Undefined by industry standard at this time. 10ft sample, measured under section 2.1 Network Analyzer
8712B or TDR-54750A		 No more than 10% variation
from min value to max value
measured.		 6.3.5 Max: 2.14 Min: 1.99
7.01%,
PASS
4 Differential
Propagation
Time 		Freq S12 measurement, sweep 10MHz-650MHz. Length 30m (100ft). All wires floating during test Network Analyzer
8712B		 5.4nS/m max, 135nS/m max
termination to termination
(1.65nS/ft, 41.15nS/ft)		 6.3.7 4.95nS/m (1.51ns/ft)
PASS
5 Differential
Propagation
Time 		Time Rise time 1nS-3nS. Length 6m(20ft). All wires floating during test Time Domain
Refectometer 54750A		 5.4nS/m max, 135nS/m max
termination to termination
(1.65nS/ft, 41.15nS/ft)		 6.3.7 4.87 ns/m (1.487ns/ft),
PASS
6 Differential
Propagation
Time Skew		 Time Difference between the min and max
calculation		 Time Domain
Refectometer 54750A		 82ps/m max Skew, 2 nS/m
max termination to termination
(0.609nS/ft, 24.99ps/ft)		 6.3.7 72ps/m (22 ps/ft)
PASS
7 Differential
Attenuation 		Freq Freq Point 200MHz. Low Freq shelf to 1 GHz where a 3X change in freq produces less than 0.5dB in attenuation difference. Length typically > 30m (100ft). All wires floating during test. Network Analyzer
8712B
AWG STRANDED
(dB/m) 		SOLID
(dB/m)
32 O.XX 0.68
30 0.68 0.48
28 0.48 O.XX
(0.146dB/ft, 0.207dB/ft) max
6.3.9 .77 dB/m (0.23 dB/ft) Passes
for lengths allowed up to 7.5m
8 Differential
Cross Talk
NEXT 		Time Single pulse max, min signal transition duration. Length typically > 30m (100ft). All wires floating during test. Time Domain
Refectometer 54750A		 3.0% of the 1nS 6.3.10 PASS

Note: " * "Laminated Sub-MicroQuick Twist"and the "MQT" family are considered Non Uniform Media as defined in Section 6.3.1 of the SPI-3 & SPI-4 document. Since it is listed as a non-uniform media, not all electrical properties will be met, due in part to the construciton of the cable. Electrical properties like Propagation Time Skew and Attenuation may fall outside of the industry spec. This would also be true if you took a round SCSI cable and terminated the cable. After the cable leaves its manufactured state, the electrical properties can be greatly diminished.