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
Co
7
No Connection
12
Receive-
3
T
8
Logic Ref
13
Power (+12Vdc)
4
Logic Ref
9
Collision-
14
Logic Ref
5
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