Bently Nevada 3500/20 125760-01 Data Manager I/O Module
Description：
125760-01 is BentlyNevada 3500/20 Data Manager I/O Module. It is 1 full-height rear slot. The Rack Interface Module uses two I/O module types, the Rack Interface I/O Module and the Data Manager I/O Module. These I/O modules let you connect a 3500 host computer and Communication Processors (TDIX or DDIX) to a 3500 rack and let you daisy chain racks together.

This section describes how to use the connectors on the I/O modules, lists what cables to use, and shows the pin outs of the cables.

Only one Rack Interface I/O Module can be installed at a time behind the Rack Interface Module (in a Rack Mount or a Panel Mount rack) or above the Rack Interface Module (in a Bulkhead rack).
Also, one Data Manager I/O Module may be installed between the Power Input Modules and the Rack Interface I/O Module (in a Rack Mount or a Panel Mount rack) or above the Power Supplies between the Power Input Modules and the Rack Interface I/O Module (in a Bulkhead rack).

125760-01 is used to connect two Bently Nevada Communication Processors to the 3500 rack.
The Data Manager I/O Module must be installed behind the Power Supplies between the Power Input Modules and the Rack Interface I/O Module (in a Rack Mount or Panel Mount rack) or above the Power Supplies between the Power Input Modules and the Rack Interface I/O Module (in a Bulkhead rack). The function of the Data Manager I/O module is to connect the 3500 rack to TDIX or DDIX Communication Processors. Each port can connect up to 24 channels, from the 3500 rack to the Communication Processor. 

Dimensions：241.3 mm x 24.4 mm x 99.1 mm
Ordering Information:
125744-02   Standard Rack Interface Module
125744-01   TMR Rack Interface Module
135031-01   RIM I/O Module with Modem Interface
125768-01   RIM I/O Module with RS232/RS422 Interface
125760-01   Data Manager I/O Module