Milan Technology MIL 4000H User's Manual
Contents
1. SPECIFICATIONS Product Package MicroHub LE Model 4000H hardware 110 220 Volt Desk Mount Power Supply User Manual Electrical Power Consumption 1 0A at 16VAC Maximum Environmental Operating Temperature 02 552 C 329 1319 F Storage Temeperature 10 70 C 14 158 F Operating Humidity 10 90 non condensing Storage Humidity 5 95 non condensing Tested to comply with FCC Class A Radiation requirements Hardware Compatibility Backbone Uplink Port Thin Coax Thinnet BNC 10Base2 Thick Coax Thicknet DB 15 10Base5 Unshielded Twisted Pair RJ45 10BaseT Front panel 10BaseT Ports 8 Unshielded Twisted Pair RJ45 10BaseT BNC Port Unit Typical Worst Cable Type RG 58u Maximum Cable Length meters 185 Power and Signal Isolation vrms 500 Maximum Number of Taps segment 30 Transmit Output Voltage AC Sine 1 8 2 2 Jitter ns S 2 Squelch Threshold mV 175 300 Collision Detection Voltage V Lol T8 Physical The MIL 4000H is packaged in lightweight aluminum alloy with a gray finish for years of durable maintanance free use Dimensions 7 0 L x 5 0 W x 1 6 D Weight 27 oz Shipping 40 oz MiLAN Technology Corporation 894 Ross Drive Suite 101 Sunnyvale CA 94089 408 e 752 e2770 Fax 408 e 752 e2790 1993 MILAN Technology Corporation Ethernet IEEE 802 3 V1 0 V2 0 MicroHub LE MODEL MILe 4000H 9 Port 10BaseT Workgroup Hub Conforms to IEEE 802 3 Repeater Unit Specifications e A2. Voltage Return 11 GRD 2 Control In A 7 NC 12 Data In B 3 DataOut A 8 NC 13 Voltage 4 GRD 9 Control In B 14 GRD 5 Data In A 10 Data Out B 15 NC NC No Connection NOTICE MiLAN Technology Corporation reserves the right to change these specifications without notice LITDS 4000H Rev 1 3 93 Printed in the U S A
3. ll ports are seperately partitioned in response to excessive collision or fault conditions e All ports automatically reconnect once fault condition is cured e Transmit and receive mode collision detection and propagation are implemented Full amplitude and retiming regeneration for re transmitted waveforms removes jitter caused by cable attenuation and other devices on the network Deep fifo eliminates any preamble loss Jabber lock up protection Repeater logic disables transmission for 96 bit times once jabber packet of 65 536 bits is received e Automatic polarity reversal is disabled by default e Link test is enabled by default UTP Ports Unit Typical Worst Distance Limit Meters 100 100 Output voltage Vv Voltage imbalance mV 40 80 Rise fall time ns 20 Rise fall time mismatch ns 6 Link test period ms 8 24 Unsquelch voltage mV 300 500 Post squelch mV 150 260 Signal isolation vrms 2000 AUI Interface Unit Typical Input Sensitivity mV 100 Frequency Range MHz 1 20 Input Impedence Differential ohm 78 Output Voltage v 12 Output Impedance ohm 78 Output Current mA 40 Output Voltage Differential mV 500 900 Symmetry ns 2 Cable Specifications IEEE802 3 50 Meters RJ 45 Wiring Pinout for 10BaseT Port Hub Port Uplink Port 1 RX 5 1TX 5 2 RX 6 TX 2 TX 6 RX 3 TX 7 3 RX 7 4 8 4 8 AUI Interface Connector Type 15 position D style male receptacle Shell Protective ground Pin 1 Chassis GRD 6
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