Specifications

Frequency Response Below 300 kHz Performance Test
relative to the amplitude at 300 kHz. This relative flatness is converted to an absolute
flatness by adding the 300 kHz flatness error from the Frequency Response (300 kHz to 3
GHz) test.
A function generator, and a multimeter are used in the test. The function generator and
DVM provide an accurate, flat CW level of 0.0707 V (RMS) (-10 dBm into 50 ohms) to
the E444XA. This is the same input level that is used in the 300 kHz to 3 GHz test.
The E444XA measures the amplitude of the signal in dBm. Flatness (frequency response)
is defined as the difference between the multimeter reading and the E444XA reading in
dB.
The E444XA has three flatness correction points below 300 kHz. The correction points
are 9 kHz, 50 kHz, and 200 kHz. The firmware applies the 9 kHz Flatness Correction as
an offset to all points below 9 kHz.
Required Test Equipment
Test Equipment Model Number
E4440A
E4443A, E4445A
E4446A
E4448A
Function Generator 33120A X X
Multimeter 3458A X X
BNC Cable (2 required) 10503A X X
Type N (m) to BNC (f) adapter 1250-1476 X X
BNC (f) to dual banana adapter 1251-2277 X X
BNC Tee 1250-0781 X X
Type N (f) to 3.5 mm (f) adapter 1250-1745 (Option BAB)
Type N (f) to 2.4mm (f) adapter 11903B X
BNC 50 ohm termination 1250-0207 X X
Frequency Response Below 300 kHz System Calibration
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