Supplemental characteristics – Atec Agilent-E9300A User Manual

Page 3

Supplemental characteristics

Power reference

Frequency: 50 MHz nominal.
SWR: 1.05 maximum.
Connector: Type N (f), 50

Ω

Measurement speed

Three measurement speed modes,
over the GPIB, are available as
shown, along with the typical maxi-
mum measurement speed for each
mode.

With the E4418B power meter

Normal: 20 readings/second
x2: 40 readings/second
Fast: 200 readings/second

With the E4419B, the measurement
speed is reduced, for example, with
both channels in FAST mode, the
typical maximum measurement
speed is 100 readings/second.

Fast mode is for E-series sensors
only.

Maximum measurement speed is
obtained using binary output
and in free run trigger mode.

Zero drift of sensors: Sensor depen-
dent, refer to table 2. For E9300
sensors, refer to table 12 for
complete data.

Measurement noise: Sensor depen-
dent, refer to table 2 and table 3. For
E9300 sensors, refer to table 12.

Effects of averaging on noise: Averaging
over 1 to 1024 readings is available
for reducing noise. Table 2 provides
the measurement noise for a particu-
lar sensor with the number of
averages set at 16 (for normal mode)
and 32 (for x2 mode). Use the noise
multiplier, for the appropriate mode
(normal or x2) and number of
averages, to determine the total mea-
surement noise value.

Example:
8481D power sensor, normal mode,
number of averages = 4.

Measurement noise calculation:
(< 45 pW x 2.75) = < 121 pW.

Table 2
Model Zero

drift

Measurement noise2

8481A, 8482A, 8483A, 8485A,

< ±10 nW

< 110 nW

8487A, R8486A, Q8486A

8481B, 8482B

< ±10 µW

< 110 µW

8481D, 8485D, 8487D

< ±4 pW

< 45 pW

8481H, 8482H

< ±1µW

< 10 µW

R8486D, Q8486D

< ±6 pW

< 65 pW

V8486A, W8486A

< ±40 nW

< 450 nW

E4412A, E4413A

< ±15 pW

< 70 pW

E9300A, E9301A, E9304A3

< ±150 pW

< 700 pW

E9300B, E9301B3

< ±150 nW

< 700 nW

E9300H, E9301H3

< ±1.5 nW

< 7 nW

1. Within 1 hour after zero set, at a constant temperature, after a 24-hour warm-up of the power

meter.

2. The number of averages at 16 for normal mode and 32 for x2 mode, at a constant temperature,

measured over a one minute interval and two standard deviations. For E-series sensors, the
measurement noise is measured within the low range. Refer to the relevant sensor manual for
further information.

3. Specification applies to the low power path, 15% to 75% relative humidity.

Table 3
Number of averages

128

256

512

1024

Noise

multiplier

5.5 3.89 2.75 1.94 1

0.85 0.61 0.49 0.34 0.24 0.17

(normal mode)
Noise

multiplier

6.5 4.6 3.25 2.3 1.63 1

0.72 0.57 0.41 0.29 0.2

(x2 mode)