User`s guide

IRM3 QUICK REFERENCE CARD
IRM3 User’s Guide Part of 9030494 -01
LED INDICATORS
LED Description
PWR IRM3 is receiving power from MMAC.
BOK LED lit-Board is operating properly.
LED not lit-Initialization problem. Press
Reset switch.
RCV IRM3 is repeating packet received from a
connected segment.
MGMT IRM3 is receiving/transmitting management
packets.
CLN Collision detected on a segment.
POK Internal repeater port is OK.
ON (AUI) AUI port is active repeater port.
PWR (AUI) AUI port is receiving power.
ON (FO) Fiber Optic port is active repeater port.
LNK (FO) Link is established between port and Fiber
Optic device.
CONNECTIONS
AUI Port: 15-pin D type receptacle
Pin Signal Pin Signal Pin Signal
1 Logic Ref 6 Power Return 11 Logic Ref
2 Collision+ 7 No Connection 12 Receive-
3 Transmit+ 8 Logic Ref 13 Power (+12Vdc)
4 Logic Ref 9 Collision- 14 Logic Ref
5 Receive+ 10 Transmit- 15 No Connection
Console/Modem Port: Standard 9-pin RS232 port
Pin Signal Pin Signal
1 Carrier Detect (CD) 6 Receive Clock (RXCL)
2 Transmit (TXD) 7 Request to Send (RTS)
3 Receive (RXD) 8 Clear to Send (CTS)
4 Data Terminal Ready (DTR) 9 Ring Indicator (RI)
5 Logic Ref
IRM3
SN
RESET
PWR BOK
MGMT RCV
CLN POK
A
ON PWR
ON LNK
T
X
F
O
U
I