APPENDIX D – TEST CHAMBERS
An anechoic RF test chamber, sized appropriately for the Device
Under Test (DUT), with SMA pass-through connectors is required.
There are several important factors to consider when buying a
chamber. The attenuation of RF energy that comes into the box
from outside, the attenuation of RF energy that is reflected from the
inside of the box, and the connectors for passing signals through
the walls.
Requirements:
•
Attenuation of incoming RF energy:
≥
30dB @ 2.4GHz
•
Attenuation of reflected RF energy:
≥
15dB @ 2.4GHz (
≥
7.5dB each direction)
•
Connectors: One (1) SMA minimum
Many vendors sell test chambers that will work. Below are some
examples of units that we have used before.
•
Micronix model ME8662E
•
Ramsey Electronics model STE2200 with optional
CONN157. (A small box nicely sized for a mouse or dongle,
or small bare boards.)
•
Ramsey Electronics model STE3300 with optional
CONN157.
Cypress Semiconductor Corporation
Page
20/20
•
Ramsey Electronics model STE4400 with optional
CONN157. (Large enough for a full size keyboard in
plastic.)
