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SSP 30237/8
Overview
These documents establish the test requirements and test methods for verifying the control of electromagnetic interference aboard the International Space Station (ISS). While they also outline design requirements for compliance, they are based largely on the MIL-STD documents. In fact, SSP 30237 and SSP 30238 are analogous to MIL-STD-461 and MIL-STD-462 as the former defines the limits and levels for testing, while the latter defines the test methods which are to be used for the testing.
There are a number of revisions to these documents, but only the most recent revisions will be discussed on this page.
The military and aerospace world uses the term susceptibility, rather than immunity used in the commercial world. Knowing the following codes will be helpful in navigating this standard.
C = conducted
R = radiated
E = emission
L = leakage
S = susceptibility
SSP 30237/8 [top of page]
The primary tests defined by SSP 30237/8 are defined in the table below.
CE01 |
Conducted emissions, DC power leads, 30 Hz to 15 kHz |
CE03 |
Conducted emissions, DC power leads, 15 kHz to 50 MHz |
CE07 |
Conducted emissions, DC power leads, time domain transients |
CS01 |
Conducted susceptibility, DC power leads, 30 Hz to 50 kHz |
CS02 |
Conducted susceptibility, DC power leads, 50 kHz to 50 MHz |
CS06 |
Conducted susceptibility, DC power leads, transient spike |
RE02 |
Radiated emissions, E-field, 14 kHz to 10 GHz, 13.5-15.5 GHz |
RS02 |
Radiated susceptibility, magnetic induction field |
RS03 |
Radiated susceptibility, electric field, 14 kHz to 20 GHz |
LE01 |
Leakage current, AC power leads |
At first glance, this standard appears to be a more streamlined version of MIL-STD-461. However, this is not always the case. Additional requirements exist in a sister document (SSP 30243), the most notable of which define sag and surge testing on the DC power input. If your component is attached to the main bus, it will most likely need to meet the environments defined by these additional requirements. These requirements should be realized and well-defined up front, since they will most likely affect the design of your power input.
Since this standard was derived specifically for the EMC environment presented by the International Space Station, it is not typically tailored. However, since the publication of 461D, there has been a growing propensity to tailor requirements. Thus, modification of the SSP requirements by a procurement agency is not out of the question.
Scheduling [top of page]
EMC Integrity generates a detailed quotation for all formal compliance testing that we perform. Our quotations state the name of the product to be tested, the standards to which the product will be tested, the individual tests that will be performed and any additional testing that may be requested by the client. Tests are listed on a line-item basis, thus clearly delineating both the scope of work and the cost of each test. An outline of our process is given below.
Overview of EMCI’s RFQ Process.
Click here if you would like to Request A Quote.
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