3Com MSR 30, MSR 20, MSR 50 manual Following table describes the LEDs on the MIM-1AE3 panel

108CHAPTER 3: MULTIFUNCTIONAL INTERFACE MODULES

n	In the supported services described in the above table, CBR represents Constant
	Bit Rate, rt_VBR represents Variable Bit Rate-Real Time, nrt_VBR represents
	Variable Bit Rate-Non Real Time, and UBR represents Unspecified Bit Rate.

Interface LEDs MIM-1AE3 panel is shown in the following figure:

Figure 120 MIM-1AE3 panel

The following table describes the LEDs on the MIM-1AE3 panel:

Table 68 Description of the LEDs on the MIM-1AE3 panel

LED	Description
LINK	OFF means no link is present; ON
	means a link is present.
ACT	OFF means no data is being
	transmitted or received; blinking
	means data is being received or/and
	transmitted.

Interface Cable External ports provided by MIM-1AE3 are two SMB sockets respectively functioning as Tx end and Rx end for transmitting data and receiving data. The ports work in 75-ohm unbalanced transmission mode and are connected to the peer device using a pair of 75-ohm unbalanced coaxial cables. Several cable length options are available.

Figure 121 E3/T3 cable

BNC connector SMB connector

n MIM-1AE3 and MIM-1AT3 modules use the same type of cables for connection, which are called E3/T3 cables in this manual.

Connecting the Interface

Cable

c CAUTION: Some measures have been taken to protect MIM-1AE3 module. To achieve better lightning protection effects, however, you are recommended to add a special lightning arrester at the input end of the E3/T3 cable when leading it to the outdoors.

Step 1: Connect the SMB connector of an E3/T3 cable to the Tx port on

MIM-1AE3 and another end to the Rx port on the device to be connected;