Atec Solar-Electronics-LISN-Simulation Networks - Manual

SPACECRAFT LINE IMPEDANCE SIMULATION NETWORKS
In the styles we have provided to date, inductors are used in both sides of the line, except for the two
styles marked with * in the following table. The distinction between Line Impedance
Stabilization Networks and Line Impedance
Simulation Networks is twofold:
a. Simulation networks do not contain an r.f.
factor.
b. Simulation networks are normally used on
d.c. lines only (See the back side of this page
for a.c.-d.c. units).
The acronym LISN is often used for either type of
unit and it is important to provide modifiers to
distinguish which unit is being described.
Line Impedance Stabilization Networks are used
in many cases to measure the r.f. voltages (from
line-to-ground) conducted on a.c. or d.c. power
leads. They establish a known impedance-versus-
frequency condition over the frequency range of
interest. These units include an r.f. connector for
cabling to an EMI meter or spectrum analyzer to
perform the measurement. See catalog page LINE
IMPEDANCE STABILIZATION NETWORKS for details
on these units.
Line Impedance Simulation Networks are used
for testing items which will be installed in
spacecraft. They establish an impedance-versus-
frequency condition which simulates the d.c.
power sources used on satellites and other
vehicles operating in a space environment. These
are dual units with both positive and negative
leads going through. Both lines are isolated from
the case.
Spacecraft designers do not always agree on the
characteristics of the d.c. power source aboard
the vehicle. The inductance in series with the load,
the resistance across the inductor, and the series
resistance in each leg of the unit are variables
specified by different spacecraft engineers.
Inductance, Current Resistor Resistance
Type Number** microhenries Rating across coil in series
7505-4-TS-15-BP . . . . . . . . . . . . . . 4 . . . . . . . . . . . . . . . 15 A. . . . . . . . . . . 25 ohms . . . . . . 250.0 milliohms
8212-4-TS-100-BP . . . . . . . . . . . . . 4 . . . . . . . . . . . . . . 100 A. . . . . . . . . . . 25 ohms . . . . . . . . 0.36 milliohms
8312-4-TS-15-BP . . . . . . . . . . . . . . 4 . . . . . . . . . . . . . . . 15 A. . . . . . . . . . . 25 ohms . . . . . . . 50.0
milliohms
† 8509-1-TS-15-BP . . . . . . . . . . . . . . 1 . . . . . . . . . . . . . . . 15 A. . . . . . . . . . . 50 ohms . . . . . . . 82.0 milliohms
* 8708-26-PJ-50-X . . . . . . . . . . . . . 26 . . . . . . . . . . . . . . . 50 A. . . . . . . . . . . . None. . . . . . . . . . 9.3 milliohms
* 8709-3.5-PJ-50-X. . . . . . . . . . . . . . 3. 5. . . . . . . . . . . . . . 50 A. . . . . . . . . . . . None. . . . . . . . . . 2.8 milliohms
† 8712-2-TS-10-BP . . . . . . . . . . . . . . 2 . . . . . . . . . . . . . . . 10 A. . . . . . . . . . . 50 ohms . . . . . . . 50.0 milliohms
† 8718-2-TS-50-BP . . . . . . . . . . . . . . 2 . . . . . . . . . . . . . . . 50 A. . . . . . . . . . . 50 ohms . . . . . . . 50.0 milliohms
8809-1.3-TS-50-BP . . . . . . . . . . . . 1. 35 . . . . . . . . . . . . 50 A. . . . . . . . . . . 25 ohms . . . . . . . . 1.5 milliohms
† 8812-2-TS-120-BP . . . . . . . . . . . . . 2 . . . . . . . . . . . . . . 120 A. . . . . . . . . . . 50 ohms . . . . . . . . 2.2 milliohms
8901-4-TS-15-BP . . . . . . . . . . . . . . 4 . . . . . . . . . . . . . . . 15 A. . . . . . . . . . . 25 ohms . . . . . . 250.0 milliohms
8903-4-TS-100-BP . . . . . . . . . . . . . 4 . . . . . . . . . . . . . . 100 A. . . . . . . . . . . 25 ohms . . . . . . . . 0.36 milliohms
8904-4-TS-15-BP . . . . . . . . . . . . . . 4 . . . . . . . . . . . . . . . 15 A. . . . . . . . . . . 25 ohms . . . . . . . 50.0
milliohms
8910-4-TS-15-BP . . . . . . . . . . . . . . 4 . . . . . . . . . . . . . . . 15 A. . . . . . . . . . . 25 ohms . . . . . . . . 0.25 milliohms
9002-1 . . . . . . . . . . . . . . . . . . . . . . . 0. 9. . . . . . . . . . . . . . . 6 A. . . . . . . . . . . . None . . . . . . . 113.0
milliohms
9102-5-TS-10-X. . . . . . . . . . . . . . . . 5 . . . . . . . . . . . . . . . 10 A. . . . . . . . . . . 25 ohms . . . . . . 125.0 milliohms
9213-5-TS-50-BP . . . . . . . . . . . . . . 5 . . . . . . . . . . . . . . . 50 A. . . . . . . . . . . 25 ohms . . . . . . . 50.0 milliohms
9238-10-TS-50 . . . . . . . . . . . . . . . 10 . . . . . . . . . . . . . . . 50 A. . . . . . . . . . . 25 ohms . . . . . . . . 0.50 milliohms
9336-100-TS-100-BP. . . . . . . . . 100 . . . . . . . . . . . . . . 100 A.
9344-3/12-TS-50-BNC/PJ . . . . . . 0. 25 . . . . . . . . . . . . 50 A.
9350-4-TS-50-N . . . . . . . . . . . . . . . 4 . . . . . . . . . . . . . . . 50 A.
* The return lead (negative) does not contain an inductor.
** The letters PJ indicate Plug and Jack power connections. The letters TS indicate Terminal Screw power
connections. The letters BP at the end of the type number indicate Binding Posts connected across the
coil. This enables the user to connect an oscilloscope across the coil for measuring line transients and
ripple as required by NASA document SL-E-0002, paragraph 6.20.
† In addition to the internal capacitance from line-to-line, these four units require another
45,000 ȖF, supplied by an external unit.
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