E4416A_E4417A EPM-P Series Power Meters and E-Series E9320 Peak and Average Power Sensors.pdf - 第4页

Find us at www.keys ight.com Page 4 Accuracy Instrumentation Please add the corre sponding power sen sor linearity perc entage; see Table s 6a and 6b for the E9320 sensors. Average only mode Absolute Logarithmic ± 0.02 d…

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Single Sensor Dynamic Range

E-series E9320 peak and average

power sensors

70 dB maximum (normal mode)

85 dB maximum (average only mode)

E-series CW power sensors

90 dB

E-series E9300 average power

sensors

80 dB maximum

8480 series sensors

50 dB maximum

N8480 series sensors

55 dB maximum

Display units

Absolute

Watts or dBm

Relative

Percent or dB

Display resolution Selectable resolution of 1.0, 0.1, 0.01, 0.001 dB in logarithmic mode,

or 1 to 4 significant digits in linear mode

Offset range

± 100 dB in 0.001 dB increments, to compensate for external loss or gain

Video bandwidth

5 MHz (set by meter and is sensor dependent)

Note that the video bandwidth represents the ability of the power sensor and meter to follow the power

envelope of the input signal. The power envelope of the input signal is, in some cases, determined by

the signal’s modulation bandwidth, and hence video bandwidth is sometimes referred to as modulation

bandwidth.

Video bandwidth/dynamic range optimization

The power measurement system, comprising the sensor and meter, has its maximum video bandwidth

defined by the E9320 sensor. To optimize the system’s dynamic range for peak power measurements,

the video bandwidth in the meter can be set to High, Medium and Low, as detailed in the following table.

The filter video bandwidths stated in the table are not the 3 dB bandwidths as the video bandwidths are

corrected for optimal flatness. Refer to Figures 6 to 8 for information on the sensor’s peak flatness

response. A filter OFF mode is also provided.

Table 1. Video bandwidth versus peak power dynamic range.

Sensor model Video bandwidth/Max peak power dynamic range

OFF

High

Medium

Low

E9321A

300 kHz/–40 dBm to +20 dBm 300 kHz/–42 dBm to +20 dBm 100 kHz/–43 dBm to +20 dBm 30 kHz/–45 dBm to +20 dBm

E9325A

E9322A

1.5 MHz/–37 dBm to +20 dBm 1.5 MHz/–38 dBm to +20 dBm 300 kHz/–39 dBm to +20 dBm 100 kHz/–39 dBm to +20 dBm

E9326A

E9323A

5 MHz/–32 dBm to +20 dBm 5 MHz/–32 dBm to +20 dBm 1.5 MHz/–34 dBm to +20 dBm 300 kHz/–36 dBm to +20 dBm

E9327A

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Accuracy

Instrumentation

Please add the corresponding power sensor linearity percentage; see Tables 6a and 6b for the E9320

sensors.

Average only mode

Absolute

Logarithmic

± 0.02 dB

Linear

± 0.5%

Relative

Logarithmic

± 0.04 dB

Linear

± 1.0%

Normal mode Calibration temperature

± 5 °C Temperature 0 to 55 °C

Absolute accuracy (log)

± 0.04 dB

± 0.08 dB

Absolute accuracy (linear)

± 0.8%

± 1.7%

Relative accuracy (log)

± 0.08 dB

± 0.16 dB

Relative accuracy (linear)

± 1.6%

± 3.4%

Time base accuracy

0.01%

1 mW power reference

Power output 1.00 mW (0.0 dBm). Factory set to ± 0.5% traceable to the National Physical

Laboratories (NPL), UK

Accuracy For two years

± 0.5% (23 ± 3 °C)

± 0.6% (25 ± 10 °C)

± 0.9% (0 to 55 °C)

Frequency

50 MHz nominal

SWR

1.06 maximum (1.08 maximum for Option E41xA-003)

Connector type

Type N (f), 50 ohms

1 Power meter is within ± 5 °C of its calibration temperature.

2 National metrology institutes of member states of the Metre Convention, such as the National Institute of Standards

and Technology in the USA, are signatories to the ComitÈ International des Poids et Mesures Mutual Recognition

Arrangement. Further information is available from the Bureau International des Poids et Mesures, at

http://www.bipm.fr/

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Table 2. Measurement speed for different sensor types.

Channel functions

A, B, A/B, B/A, A-B, B-A and Relative

Storage registers

10 instrument states can be saved via the Save/Recall menu

Predefined setups For common wireless standards (GSM900, EDGE, NADC, iDEN, Bluetooth

, IS-95

CDMA, W-CDMA and cdma2000

), predefined setups are provided

Trigger

Sources

Internal, External TTL, GPIB, RS232/422

Time resolution

50 ns

Delay range

± 1.0 s

Delay resolution

50 ns for delays < ± 50 ms; otherwise 200 ns

Hold-off

– Range

– Resolution

1 µs to 400 ms

1% of selected value (minimum of 100 ns)

Internal Trigger

Range

–20 to +20 dBm

Level accuracy

± 0.5 dB

Resolution

0.1 dB

Latency

500 ns ± 100 ns

Latency is defined as the delay between the applied RF crossing the trigger level and the meter

switching into the triggered state.

External trigger range High > 2.0 V, Low < 0.8 V; BNC connector; rising or falling edge triggered; input

impedance > 1 kW

Trigger out Output provides TTL compatible levels (high > 2.4 V, low < 0.4 V) and uses a BNC

connector

1 Fast speed is not available for 8480 and N8480 series sensors.

2 Maximum measurement speed is obtained by using binary output in free run trigger.

3 For E9320 sensors, maximum speed is achieved using binary output in free run acquisition.

Sensor type Measurement speed (readings/second)

Normal x 2

Fast

1, 2

E-Series E9320 peak and average sensors

Average only mode

400

Normal mode

1000

E-Series CW and E9300 average power sensors

400

8480 and N8480 Series sensor