Agilent 83711B Data Sheet

Specifications describe the instrument’s

warranted performance over the 0° to
55°C temperature range unless other­wise noted.

Supplemental Characteristics are intended
to provide information useful in estimat­ing instrument capability in your appli­cation by describing typical, but not war­ranted, performance. Note: Supplemental

characteristics are indicated by italic type.

Agilent 83711B and 83712B

Synthesized CW Generators

Agilent 83731B and 83732B

Synthesized Signal Generators

Data Sheet

10 MHz to 20 GHz
1 to 20 GHz

2

Frequency

Range:
Synthesized CW generators

83711B, 1.0 to 20 GHz
83712B, 10 MHz to 20 GHz

Synthesized signal generators

83731B, 1.0 to 20 GHz
83732B, 10 MHz to 20 GHz

Resolution: 1 kHz (1 Hz with Option 1E8)
Stability (with high-stability timebase, Option 1E5)

Aging rate:

<1.5 x 10–9/day after 24-hour warm up

Temperature effects:

<1 x 10–7over 0 to 55° C, nominally <1.4 x 10–9/° C

Line voltage effects:

<5 x 10

–10

for 10% change in line voltage

Stability (without high-stability timebase)

Aging rate:

<1.0 x 10–8/day after 72 hours at 25° C ± 10° C

Temperature effects:

<5 x 10–6over 0 to 55° C referenced to 25° C

Stability (with external 10 MHz reference):
Same as external reference.

Frequency switching time

<50 ms to within 1 kHz for any frequency step
<35 ms to within 1 kHz for <1 GHz steps not across the

10 GHz band switch point

RF Output

Maximum leveled output power:

Frequency Standard with Option 1E1

0.01 to 1 GHz +13 dBm +13 dBm
1 to 18 GHz +11 dBm +10 dBm
18 to 20 GHz +10 dBm + 8 dBm

Typical maximum available output power from 1 to 20 GHz,
at 25°C with output step attenuator (Option 1E1) installed

Typical maximum available output power from 0.01 to
1 GHz at 25°C

Minimum leveled output power: –4 dBm

with Option 1E1, –110 dBm

Display resolution: 0.01 dB
Accuracy (–4 dBm

1

to maximum specified leveled output
power2):
10 MHz to 50 MHz, ±1.3 dB
50 MHz to 20 GHz, ±1.0 dB
Accuracy (over all power levels2):
10 MHz to 50 MHz, ±2.3 dB (power ≥ –90 dBm)
50 MHz to 20 GHz, ±2.0 dB (power ≥ –90 dBm)
10 MHz to 20 GHz, ±2.5 dB (power < –90 dBm)

Typical output level accuracy and flatness at +10
and –85 dBm

Flatness:

±0.5 dB2(power ≥ –90 dBm)
±0.7 dB2(power < –90 dBm)

Level switching time: <17 ms
(without step attenuator range change)

Attenuator range changes occur at:

83711B, 83712B

–1 dBm, –11 dBm, –21 dBm, etc.

83731B, 83732B

–4 dBm, –14 dBm, –24 dBm, etc.
–10 dBm, –20 dBm, –30 dBm, etc. (linear AM)

Output SWR: <2.0 : 1 nominal

10.5

Output Level (dBm)

Carrier Frequency (GHz)

10.0

9.5

-84.5

-85.0

-86.5
048121620

1. –10 dBm (linear AM)

2. The use of type-N RF connectors above 18.0 GHz degrades specification typically
by 0.2 dB.

3

User Flatness (Level) Correction

Number of points: 2 to 401 points/table
Number of tables: up to 4
Entry modes: power meter, GPIB

Spectral Purity

SSB phase noise (dBc/Hz, CW mode):

Offsets

Carrier Freq. 100 Hz 1 kHz 10 kHz 100 kHz

0.5 to <1 GHz –78 –92 –103 –115
1 to <2 GHz –73 –83 –92 –107
2 to <5 GHz –70 –78 –83 –100
5 to <10 GHz –69 –78 –82 –100
10 to 20 GHz –65 –73 –76 –100

Phase noise decreases 6 dB/octave below 500 MHz and
reaches a floor of <–140 dBc/Hz.

Typical single-sideband phase noise at 50 MHz, 1 GHz,
10 GHz, and 20 GHz, 25°C, CW mode. Offsets less than
100 Hz require the high-stability timebase, Option 1E5.

Harmonics:

83711B/83712B, <–50 dBc (at levels < +6 dBm)
83731B/83732B, <–55 dBc (at levels < +6 dBm)

Typical 2nd harmonic levels measured at output power
of +6 dBm

Nonharmonic spurious (≥3 kHz): <–60 dBc (includes

power supply and frequency synthesis spurious)

Nonharmonic spurious (<3 kHz): <–50 dBc
Subharmonics: none
Residual FM:

At 1 GHz, in 50 Hz to 15 kHz bandwidth: < 15 Hz Residual
FM decreases 6 dB per octave below 1 GHz.

Typical residual FM measured in 50 Hz to 15 kHz bandwidth,
CW mode, with high-stability timebase, Option 1E5

AM noise floor (at 0 dBm and offsets greater than
5 MHz from carrier):

0.01 to 1 GHz, <–140 dBm/Hz

1 to 20 GHz, <–150 dBm/Hz

–50

Harmonic (dBc)

Carrier Frequency (GHz)

–55

–60
–65

–70

–75

–80

–85

–90

0246 810

Carrier Frequency (GHz)

250

RMS Deviation (Hz)

200

150

100

50

0

048121620