Rockwell-automation 1788 NetLinx Media Checker Users Manual Bedienungsanleitung PDF herunterladen (Seite 41)

Specifications

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

1 2 ... 36 37 38 39 40 41 42 43 44

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