Atec Agilent-E8251A User Manual

Agilent E8241A/44A/51A/54A PSG Family Performance Signal Generator

Data Sheet

All specifications and characteristics apply over a 0 to 55°C range (unless otherwise stated) and apply after a 45 minute warm-up time. Supplemental characteristics, denoted as typical or nominal, provide additional (non-warranted) information.

Definitions

Specifications (spec): represent warranted performance.

Typical (typ): performance is not warranted. It applies at 25°C. 80% of all products meet typical performance.

Nominal (nom): values are not warranted. They represent the value of a parameter that is most likely to occur; the expected or mean value. They are included to facilitate the application of the product.

Standard (std): No options are included when referring to the signal generator unless noted otherwise.

CW only Analog

PSG-L Series PSG-A Series 250 kHz to 20 GHz E8241A E8251A 250 kHz to 40 GHz E8244A E8254A

Frequency

Range

Frequency Range PSG-L Series PSG-A Series

250 kHz to 20 GHz E8241A E8251A

250 kHz to 40 GHz E8244A E8254A

Resolution 0.01 Hz

Accuracy Calibration = aging rate ± temperature effects

± line voltage effects

Switching speed (typical)

Analog modulation < 15 ms

Modulation off < 15 ms

Phase offset Adjustable in nominal 0.1° increments.

Frequency bands

Band Frequency range N #

1 250 kHz to 250 MHz 1/8

2 > 250 to 500 MHz 1/16

3 > 500 MHz to 1 GHz 1/8

4 > 1 to 2 GHz 1/4

5 > 2 to 3.2 GHz 1/2

6 > 3.2 to 10 GHz 1

7 > 10 to 20 GHz 2

8 > 20 to 40 GHz 4

Internal timebase reference oscillator

Standard Option UNJ

Aging rate < ±1 x 10–7/year or < ±3 x10–8/year or

< ±4.5 x 10

–9

/day < ±2.5 x 10

–10

/day

after 45 days after 24 hours

Temperature effects (typical) < ±5 x 10–80 to 55°C < ±4.5 x 10–90 to 55°C

Line voltage effects (typical) < ±2 x 10–9for < ±2 x 10

–10

for

+5% –10% change ±10% change

External reference frequency 1, 2, 2.5, 5, 10 MHz 10 MHz only

(within 1 ppm) (within 1 ppm)

Reference output

Frequency 10 MHz

Amplitude > +4 dBm typical into 50Ω load

External reference input

Amplitude > –3 dBm

Opt UNJ 5 dBm ±5 dB

Input impedance 50Ω, nominal

Digital sweep

Operating modes Step sweep of frequency or amplitude or both

(Start to stop)

List sweep of frequency or amplitude or both (Arbitrary list)

Specifications

Useable to 100 kHz

To within 0.1 ppm of final frequency above 250 MHz or within 100 Hz below 250 MHz

To optimize phase noise 5 dBm ± 2 dB

L and A Series

Sweep range

Frequency sweep Within instrument frequency range

Amplitude sweep Within attenuator hold range

Dwell time 1 ms to 60 s

Frequency settling time 28 ms typical

Amplitude settling time 10 ms typical

Number of points 2 to 1601

Triggering Auto, external, single, or GPIB

Output

Power4(dBm)

Frequency range Standard Option 1EA

20 GHz Models

250 kHz to 3.2 GHz –20 to +13 –20 to +16 > 3.2 to 20 GHz –20 to +13 –20 to +20

40 GHz Models

250 kHz to 3.2 GHz –20 to +9 –20 to +15 > 3.2 to 20 GHz –20 to +9 –20 to +18 > 20 to 40 GHz –20 to +9 –20 to +14

20 GHz Models with option 1E1

250 kHz to 3.2 GHz –135 to +11 –135 to +15 > 3.2 to 20 GHz –135 to +11 –135 to +18

40GHz Models with option 1E1

250 kHz to 3.2 GHz –135 to +7 –135 to +14 > 3.2 to 20 GHz –135 to +7 –135 to +16 > 20 to 40 GHz –135 to +7 –135 to +12

Option 1E1 step attenuator 0 dB and 5 to 115 dB in 10 dB steps

Attenuator hold range

(Same as max power sweep range)

Minimum From –20 dBm to maximum specified output power.

Can be offset using Option 1E1 attenuator.

Amplitude switching speed

CW or analog modulation < 25 ms, typical

When using power search < 25 ms, typical

CW level accuracy6(dB)

Frequency > +10 dBm +10 to –10 dBm –10 to –20 dBm

250 kHz to 2 GHz ±0.6 ±0.6 ±1.4 2 GHz to 20 GHz ±0.8 ±0.8 ±1.2 > 20 to 40 GHz ±1.0 ±0.9 ±1.3

Maximum power specification is warranted from 15 to 35ºC, and is typical from 0 to 15ºC. Maximum power over the 35 to 55ºC range typically degrades less than 2 dB.

To within 0.1 dB of final amplitude within one attenuator range

Specifications apply over the 15 to 35ºC temperature range. Degradation outside this range, for power levels > -10 dBm, is typically < 0.3 dB.

For instruments with type-N connectors (Option 1ED), specifications are degraded typically 0.2 dB above 18 GHz.

L and A Series

CW level accuracy with option 1E17(dB)

Frequency > +10 dBm +10 to –10 dBm –10 to –70 dBm –70 to –90 dBm –90 to –110 dBm

250 kHz to 2 GHz ±0.6 ±0.6 ±0.7 ±0.8 ±1.4 > 2 to 20 GHz ±0.8 ±0.8 ±0.9 ±1.0 ±1.7 > 20 to 40 GHz ±1.0 ±0.9 ±1.0 ±2.0

20 GHz level accuracy 40 GHz level accuracy

Resolution 0.01 dB

Temperature stability 0.01 dB/°C, typical

User flatness correction

Number of points 2 to 1601 points/table

Number of tables Up to 10,000, memory limited

Path loss Arbitrary, within attenuator range

Entry modes Remote power meter

, remote bus, manual

(user edit/view)

Output impedance 50 Ω, nominal

SWR (internally leveled, typical)

250 kHz to 2 GHz < 1.4:1

> 2 GHz to 20 GHz < 1.6:1

> 20 GHz to 40 GHz < 1.8:1

Leveling modes Internal leveling, external detector leveling,

millimeter source module, ALC Off

External detector leveling

Range –0.2 mV to –0.5 V, nominal (–36 dBm to +4 dBm

using Agilent 33330D/E detector)

Bandwidth Typically 10 kHz

(Note: not intended for pulsed operation)

Maximum reverse power 1/2 Watt nominal

Spectral purity

Harmonics9(dBc at +10 dBm or maximum

specified output power, whichever is lower)

< 1 MHz –30 dBc typical

1 MHz to 2 GHz –30 dBc

> 2 GHz to 20 GHz –55 dBc

> 20 GHz to 40 GHz –50 dBc typical

Specifications apply over the 15 to 35ºC temperature range, with attenuator lock off (normal operating mode). Degradation outside this range, for ALC power levels > -10 dBm, is typically < 0.3 dB.

For instruments with type-N connectors (Option 1ED), specifications are degraded typically 0.2 dB above 18 GHz. Level accuracy is not specified below -110 dBm.

Compatible with Agilent Technologies EPM Series (E4418B and E4419B) power meters.

Specifications for harmonics beyond maximum instrument frequencies are typical.

L and A Series

Measured level accuracy +5 dBm option 1E1

1.0

0.5

0.0

Level error (dB)

-0.5

-1.0 0 5000 10000 15000 20000

Frequency (MHz)

Measured level accuracy +5 dBm option 1E1

1.0

0.5

0.0

Level error (dB)

-0.5

-1.0 0 10000 20000 30000 40000

Frequency (MHz)

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