4

Frequency Specifications

Frequency range

E4443A

(DC coupled)

3 Hz to 6.7 GHz

(AC coupled)

20 MHz to 6.7 GHz

E4445A

(DC coupled)

3 Hz to 13.2 GHz

(AC coupled)

20 MHz to 13.2 GHz

E4440A

(DC coupled)

(AC coupled)

E4447A

(DC coupled)

3 Hz to 42.98 GHz

E4446A

(DC coupled)

E4448A

(DC coupled)

1. 325 GHz with external mixers

Band

Harmonic mixing mode (N)

0

1–

3 Hz to 3 GHz

1

1–

2.85 GHz to 6.6 GHz

2

2–

6.2 GHz to 13.2 GHz

3

4–

12.8 GHz to 19.2 GHz

4

4–

18.7 GHz to 26.8 GHz

5

4+

26.4 GHz to 31.15 GHz

6

8–

31.0 GHz to 50.0 GHz

Frequency reference

Accuracy

±[(time since last adjustment x aging rate) + temperature stability + calibration accuracy]

Aging rate

Temperature stability

Achievable initial calibration accuracy

Example frequency reference accuracy

1 year after last adjustment

Frequency readout accuracy (start, stop, center, marker)

± (marker frequency x frequency reference accuracy + 0.25% x span + 5% x RBW + 2 Hz + 0.5 x horizontal resolution*)

* Horizontal resolution is span/(sweep points – 1)

Marker frequency counter

Accuracy

±(marker frequency x frequency reference accuracy + 0.100 Hz)

Delta counter accuracy

±(delta frequency x frequency reference accuracy + 0.141 Hz)

Counter resolution

0.001 Hz

Frequency span (FFT and swept mode)

Range

0 Hz (zero span), 10 Hz to maximum frequency of model

Resolution

2 Hz

Accuracy

±[0.2% x span + span / (sweep points – 1)]