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U p to 3 G Hz (7 mm ) : Mate r i al c onti nued Pl acing th e MUT on t he te st f ix tu re as f ollo ws: Furnished acces sories: Compens ation and measur ement: Shor t c ompens ation is r equired b efo re mea sure - ment…

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16454A magnetic material test
fixture
Terminal connector: 7 mm
Dimensions (approx.):
(Large test fixture) 30(D) x 35(H) [mm]
(Small test fixture) 24(D) x 30(H) [mm]
Weight (approx.):
(Large test fixture) 140 g
(Small test fixture) 120 g
Measurement accuracy (typical.):
Up to 3 GHz (7 mm): Material continued
Description: The 16454A is designed for accurate permeability measurements
of toroidal-shaped magnetic materials. Since the construction of this fixture
creates one turn around the toroid (with no magnetic flux leakage), the need of
winding a wire around the toroid is unnecessary. The following figure shows the
one-turn mechanism and how complex permeability is calculated from it.
Complex permeability is calculated from the inductance with and without the
toroid. When E4991B with option E4991B-002 is used as the measurement
instrument, direct readouts of complex permeability are possible. In addition, it
is furnished with a small and a large fixture to adapt to a wide range of sizes.
Applicable instruments: E4990A + 42942A*, E4991B with Opt. E4991B-002
* Option E4990A-120 is required
Frequency: 1 kHz to 1 GHz,
DC bias: –500 mA to +500 mA (max)
Operating temperature: –55 to 200°C
When Option E4991B-007 temperature characteristic test kit is used with
E4991B, the operating temperature range is between –55 and +150°C. The
temperature characteristic test kit is unavailable for the E4990A.
Material size: See figure below.
Typical permeability (µr') Measurement accuracy
(@ h* ln c/b = 10)
Typical loss tangent (tan δ) Measurement accuracy
(@ h* ln c/b = 10)
=
Zm - Zsm 2π
+ 1
jωµ
0
hln
c
b
E4991A/4291B/4294A
.
µ
..
Relative permeability
Zm Measured impedance with toroidal core
Zsm Measured impedance with toroidal core
µ
0
Permeability of free space
h Height of MUT (Material Under Test)
c Outer diameter of MUT
b Inner diameter of MUT
.
µ
.
.
Permeability measurement method of 16454A
Material size
50 | Keysight | Accessories Catalog for Impedance Measurements - Catalog
Up to 3 GHz (7 mm): Material continued
Placing the MUT on the test fixture as follows:
Furnished accessories:
Compensation and measurement: Short compensation is required before measure-
ment. Short compensation is performed by only inserting the MUT holder into the test
fixture. After performing short compensation, the MUT is inserted into the fixture as
shown below.
Remove the cap of the fixture Place a MUT holder only in the fixture Replace the cap by screwing tightly
Remove the cap of the fixture Place a MUT onto the MUT holder and insert it
into the fixture.
Replace the cap by screwing tightly
Short compensation
E4991B with 16454A
Description P/N Qty.
Fixture holder 16454-00601 1
Tweezers 8710-2081 1
Screw, hex recess 0515-1050 1
Holder A 16454-25002 1
Holder B 16454-25001 1
Holder C (Without hole) 16454-25004 1
Holder D (With hole) 16454-25003 1
Holder case 1540-0622 1
Hex key (for replacing fixtures) 8710-1181 1
Carrying case 16454-60101 1
Operation and service manual 16454-90020 1
16454A magnetic material test fixture continued
51 | Keysight | Accessories Catalog for Impedance Measurements - Catalog
16190B Performance test kit
Terminal connector: 7 mm
Dimensions (approx.):
350 (W) x 100 (H) x 270 (D) [mm]
Weight (approx.): 2.0 kg
Other Accessories
Description: The 16190B is a performance test kit designed to verify the impedance
measurement accuracy of LCR meters or impedance analyzers that have a 7 mm
measurement terminal. Refer to the instrument’s operation/service manual for the
method of using these standards.
Applicable instrument: E4982A, E4990A + 42942A*, E4991B
* Option E4990A-120 is required
Furnished accessories:
Description P/N Qty.
Airline, 50 Ω, 7 mm N/A 1
Cap, Protection 1401-0123 2
50 Ω termination N/A 1
Open termination N/A 1
Short termination N/A 1
Cap, termination protection 16190-25011 3
Wrench, 1/2 and 8/15, open end 8710-1770 1
Carrying case N/A 1
Floppy diskette for calibration data N/A 1
Calibration report N/A 1
Operating note 16190-90020 1
52 | Keysight | Accessories Catalog for Impedance Measurements - Catalog