Figure 5: Signal Path Of The Ate System - MULTILANE AT4039EML User Manual

Item Description
Each cassette contains up to 2 instruments. In the shown picture, the
cassette is holding one AT4039E BERT and one AT4025 DSO
1 Cassette
The backplane provides power, Ethernet and clock to the instruments.
2 Backplane Each AT4000L backplane can support up to 4 instruments
simultaneously
Board to board This 52-pin connector is the interface for Ethernet, power and clocks
3 connector between backplane and instrument. These connectors are labeled
U450, U451, U452 and U453
Power Each backplane has a 12V, 13A power connector
4
connector
Clock out from a BERT is available as a differential pair at the indicated
5 Clock out
SMP
6 Clock In Differential clock input for the slave instruments
Every backplane has an Ethernet switch built in. This switch
communicates with your network through the RJ45 labeled J1.
7 Ethernet
Communication to the instruments is handled internally by the switch
using backplane traces.

Figure 5: Signal path of the ATE system

The main advantage of the ATE system as compared to using benchtop instruments, is
that the signal path is considerably shorter thus reducing insertion and return losses; the
Table 1: AT4039EML ports
AT4039EML |User Manual
7|P a g e