Figure 15: Connector Mating Sequence
S
E
N
W
The recommended torque driver setting and operation parameters are specified in the following
table.
Table 18: Torque Driver Information
Torque Driver
Controller
Module
Torque Driver Torque Setting
Assembly
Duration
RPM Setting
for Each Step
Smart Torque
Electrical Driver
Atlas Copco
MTF600
ETD M 50 ABL V2
3.0 in.lbs
(±0.5 in.lbs)
10 secs
Step 1: 300 RPM
Step 2: 600 RPM
Step 3: 150 RPM
De-mating: JSOM Standoff-nut and Jack Screw
Untighten Sequence
There is no special sequence required to untighten the four standoff nuts. However, they must
be removed before proceeding to untighten the four jack screws. The order to untighten the four
jack screws is not critical. Once all four of the jack screws are completely untightened, the SOM
board will pop up and the SOM connectors (male) automatically uncouple from the connectors
(female) on the carrier card. Remove the SOM by carefully holding the card on the two edges.
Chapter 3: Mechanical Design Considerations
UG1091 (v1.0) April 20, 2021
Carrier Card Design for Kria SOM
53