Rockwell Automation 1788 NetLinx Media Checker Users Manual - Manual (Page 41)

Specifications 41
1788-UM002A-US-P – April 2000
Specifications
These specifications assume the MediaChecker was
calibrated using 100 ft (30 m) (or more) of cable of the
same type and batch as the cable being measured.
Accuracy is specified for two years after calibration.
Coax Termination Measurements
Any loop resistance value between 5
Ω
and 350
Ω
is
interpreted as a terminator resistance. Resistance values
below 5
Ω
are considered shorts; resistance values
greater than 350
Ω
are displayed as
>
350
Ω
.
Input Connectors
RJ45, DB-9, and BNC
Input Protection
Will withstand connection to any of the supported
networks in a live condition with a supply voltage not
exceeding 25 V.
“ACTIVE CABLE” is displayed and an audible signal
sounds when the MediaChecker is connected to a cable
with voltage present.
ATTENTION: Never connect the
MediaChecker to any telephony inputs,
systems, or equipment, including ISDN.
Table 17. Cable Test Characteristics
Network Cable Wiring Pass/Fail Pins
DeviceNet Thick and
Thin
DeviceNet Data pair, power
pair, shield
DeviceNet KwikLink DeviceNet Data pair,
power pair
DH+/RIO Blue Hose
or similar
DH+ Data pair, shield
ControlNet RG6,
RG6F,
DS3/4
Coaxial Center pin and
shield
Ethernet UTP/FTP EIA/TIA
4-pair
Wire pairs 1, 2;
3, 6; 4, 5; 7, 8
Also the foil
(shield) for FTP