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13

Status

Blinks yellow from one  to eleven times to indicate system
status.  Each pulse pattern is separated by a  2 second “off” 
period.  Greater pulse patterns have higher priority (buffer sat
uration has greater priority than an empty MAC table). Valid 
system statuses are:

1 pulse  = system status ok
2 pulses = No MAC entries in the MAC address table
3 pulses = Clear to send (CTS) or Carrier Detect (DCD) from

base unit are not asserted

4 pulses = IMRC2/IA buffer is saturated
5 pulses = WAN receive frame(s) too large
6 pulses = WAN receive frame(s) not Octet aligned
7 pulses = WAN receive frame(s) aborted
8 pulses = Detected WAN  receive frame(s) with bad CRC
9 pulses = Detected LAN receive frame(s) too large
10 pulses = Detected LAN receive frame(s) not Octet aligned
11 pulses = Detected LAN receive frame(s) with bad CRC

After a status code is displayed eight times and the associat-
ed condition is removed, the status code will no longer 
appear.

Link

Glows green to indicate good link integrity on the 10Base-T 

twisted pair line.

14

A

AP

PP

PE

EN

ND

DIIX

 

A

A

PATTON ELECTRONICS MODEL IM2RC/IA 

SPECIFICATIONS

LAN Connection:  

RJ-45, 10Base-T, 802.3 Ethernet

Line Connection

RJ-45, female connector or terminal
block

MAC Address Table Size:

4096 entries

MAC Address Aging:

MAC addresses deleted after 8 min
utes inactivity

On-board Memory:

512 KB RAM; 128 KB FLASH 

Frame Latency:

1 frame

Interface:

Card-edge connection to Patton 
modems 

LED Indicators: 

(1) general status; (1) link integrity

Power Consumption:  

250mA @ 5VDC, supplied
by front card modem

Temperature Range:  

32 to 122ºF (0 to 50º C)

Dimensions:  

2.04” x 3.24” (5.2 mm x 8.26 mm)

Compliance:

FCC part 15 Class A, CE marked per 
EEC Directive 89/336/EEC, and Low 
Voltage directive 73/23/EEC

Summary of Contents for IM2RC/IA

Page 1: ...MODEL IM2RC IA Ethernet Bridge Module SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com Part 07MIM2RC IA A Doc 078521UA Revised 06 24 99 C E R T I F I E D An ISO 9001 Certif...

Page 2: ...es cause interference to radio or television reception which can be determined by disconnecting the unit the user is encouraged to try to correct the interference by one or more of the following measu...

Page 3: ...ion The Patton IM2RC IA performs the bridging function between two physically separate Ethernet LANs at the MAC level Operation of the Patton IM2RC IA is transparent to higher network level protocols...

Page 4: ...ly supports synchronous speeds BASE UNIT CLOCK MODES Unit A Unit B Internal Clock Setting Receive Recover Clock Setting NOTE Unit A and Unit B are arbitrarily chosen It does not matter which unit is A...

Page 5: ...ltage setting changes and fuse replacement should only be performed by qualified service personnel Contact Patton Electronics Technical support at 301 975 1007 for more information 8 4 2 INSTALLING TH...

Page 6: ...ment just like a 10Base T network interface card in a PC Therefore it expects to connect to a 10Base T Hub using a straight through RJ 45 cable Use the diagram below to construct a cable to connect th...

Page 7: ...atures two LEDs that monitor general operating status and the 10Base T twisted pair link integrity Figure 6 below shows the LEDs located directly beneath the RJ 45 jack Following Figure 6 is a descrip...

Page 8: ...lses Detected LAN receive frame s with bad CRC After a status code is displayed eight times and the associat ed condition is removed the status code will no longer appear Link Glows green to indicate...

Page 9: ...A AP PP PE EN ND DI IX X C C IM2RC IA INTERFACE PIN ASSIGNMENT 10BASE T Interface Pin Description RJ 45 Female Connector DTE Configuration Pin Signal 1 TD data output from IM2RC IA 2 TD data output f...

Page 10: ......

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