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Auto MDI/MDI-X Connection
The Auto MDI/MDI-X function allows users to connect the NI MES-3980's
10/100BaseTX ports to any kind of Ethernet device, without needing to pay
attention to the type of Ethernet cable being used for the connection. This
means that you can use either a straight-through cable or cross-over cable to
connect the NI MES-3980 to Ethernet devices.
Specifications
Technology
Standards
Protocols
MIB
Forwarding and
Filtering Rate
Processing Type
Flow Control
Interface
RJ45 Ports
Console
LED Indicators
Relay Contact
DIP Switches
Digital Input
Power
Input Voltage
Input Current (@24V)
Connection
Overload Current
Protection
Reverse Polarity
Protection
Mechanical
Casing
Dimensions
Weight
IEEE802.3, 802.3u, 802.3x, 802.1D, 802.1w, 802.1Q,
802.1p, 802.1X, 802.3ad
IGMP V1/V2/V3 device, GVRP, GMRP, SNMP
V1/V2c/V3, DHCP Server/Client, BootP, RMON,
TFTP, SNTP, SMTP, RARP
MIB-II, Ethernet-Like MIB, P-BRIDGE MIB,
Q-BRIDGE MIB, Bridge MIB, RSTP MIB, RMON
MIB Group 1,2,3,9
148810 pps
Store and Forward
IEEE802.3x flow control, back pressure flow control
10/100BaseT(X) auto negotiation speed, F/H duplex
mode, and auto MDI/MDI-X connection
RS-232 (RJ45)
PWR1, PWR2, FAULT, 10M, 100M, MASTER and
COUPLER
Two relay outputs with current carrying capacity of
1A @ 24 VDC
Master, Coupler, Turbo Ring, Reserve
Two inputs with the same ground, but electrically
isolated from the electronics
• For state "1": +13 to +30V
• For state "0": -30 to +3V
• Max. input current: 8 mA
12 to 45 VDC, redundant inputs
Max. 0.29A
Two removable 6-pin terminal blocks
Present
Present
IP30 protection, metal case
80.5 × 135 × 105 mm (W × H × D)
1.04 kg
— 10 —
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