S9407-AB-HBK-010 Datasheet, PDF (118/276 Pages) Glenair, Inc. – HANDBOOK OF SHIPBOARD ELECTROMAGNETIC SHIELDING PRACTICES

S9407-AB-HBK-010, Rev. 2
Cable
Category
S1, S2
S3
S4
Table 6-1. Cable Categories and Designators (Continued)
Category Description
Receiving systems operating in the frequency
band 10 kHz to 100 kHz and using cables listed
in figure 6-4. See note 1.
The group numbers 1 thru 8 are related to system
sensitivity. See notes 2, 3 and 4.
Receiving and video systems operating above
100 kHz and using the cables listed in figure 6-4.
See note 4.
Receiving systems operating below 10 kHz and
using cables listed in figure 6-4. The category
also includes low level sensor signals and varying
dc, for example, strain gages, resistive
temperature devices (RTDs) and accelerometers
and microphones.
The group numbers 1 thru 8 are related to system
sensitivity. See notes 2, 3 and 4.
Group
Numbers
1 thru
8
Cable
Designators
S1-1 thru
S1-8, S2-1
thru S2-8
(none)
S3
1 thru
8
S4-1 thru
S4-8
NOTES ON "S" CATEGORIES
1. The difference between cable categories S1 and S2 lies in the type of cable used. For
example, in figure 6-4 the S1 category is assigned to MIL-C-17 RG-type coaxial cables only,
whereas the S2 category is assigned to the MIL-C-915 and MIL-C-24640 cable types listed.
2. The group number for cable category S1, S2 or S4 is determined by the equipment design
performance sensitivity, V1(dbV). For example: a certain equipment has a V1 of -105 dbV;
this value falls within the range of values of -120 to -100 dbV listed under "Group Voltage
V2(dbV)" in column 3 of figure 6-5. The group number associated with this group voltage is "4"
(see column 2 of figure 6-5).
3. The sensitivity referred to in categories S1, S2, and S4 means that the voltage induced in the
susceptible cable is equal to the design performance sensitivity of the equipment connected to
the cable.
4. The design performance sensitivity V1 of the S1, S2, S3 and S4 cable categories is less than
or equal to 0.1 volts. Sensitivity levels above 0.1 volts must be assigned a radiator category.
6-5