ChipSHOUTER Users Manual
: External Connections
23
If the SMA saver becomes worn or damaged, remove the SMA
saver and replace with a new one. These can be purchased
from us, or you can use a high-quality SMA male to female
adapter such as Amphenol 132171.
Attaching/Removing SMA Connectors
To attach or remove a SMA connector (such as the probe
tip), you should note that ONLY the outer connector nut is
designed to rotate. The center pin of the SMA connector
should not be rotated during the removal or attachment pro-
cess, as rotating this pin can cause damage to both sides.
Instead, you should hold the body of the item being re-
moved firmly, while spinning the connector nut (using a 8mm
wrench if needed) to remove or attach. If you simply rotate
the connector nut without holding the body stationary, it is
easy to rotate the body of the SMA connector and thus also
rotate the internal contact pin (which we want to avoid).
To achieve repeatable connections, a torque wrench is
recommended. SMA connectors are typically tightened to 1 Nm
/ 8 lb-in.
SMB Trigger Input
The SMB connector is a
hardware
trigger input. As explained
in the device architecture, this trigger input is connected
directly to the high-voltage switch without being routed
through the controller.
This connection ensures the highest-speed and most di-
rect control of the pulse shape is possible. The input is
designed for 3.3V LVCMOS signal levels, but can accept up to
a 6.5V input signal safely.
