Agilent 8644B Data Sheet

Agilent
8644B, 8664A, 8665B
High Performance RF Signal Generators

Data Sheet

A commitment to value in signal generators

2

Agilent’s high performance RF signal generators – choose one for…

…Best spectral purity

• 252 kHz to 1030 MHz, 2060 MHz (Option 8644B-002)

• Lowest SSB phase noise and spurious

• Highest output power

• Lowest residual FM

• AM, FM, pulse modulation

• Built-in 2 GHz counter (Option 8644B-011)

• VOR/ILS signal simulation (Option 8644B-009)

• Ultra low leakage (Option 8644B-010)

…High RF frequency coverage

• 100 kHz to 3000 MHz – 8664A, 4200 MHz – 8665B – 6000 MHz

• Low SSB phase noise (Option 8664A-004 or Option 8665B-004)

• AM and wideband FM

• High performance pulse modulation (Option 8664A-008 or Option 8665B-008)

• Ultra low leakage (Option 8664A-010 or Option 8665B-010)

8644B

8664A and 8665B

3

Choose one for your application...

8644B 8664A 8665B

1 or 2 GHz 3 GHz 6 GHz

RF communications

Out-of-channel Ideal for receivers Ideal for receivers Same performance as
receiver testing

1

with ≥ 90 dB selectivity with ≥ 90 dB selectivity 8664A but up to 6 GHz
and/or spurious with Option 8664A-004,
immunity of ≥ 85 dB and spurious immunity of

< 85 dB to 3 GHz

General purpose Lowest possible phase Wideband FM with Lowest noise and

noise and spurious rates to 6 MHz for spurious to 6 GHz
for R&D simulation of many

new digital systems

Component test Highest output power Ideal clock source with Best output level

for mixer testing low phase jitter for high accuracy to 6 GHz

speed digital components for response testing

Radar/EW testing Full functionality for Optional pulse Same performance as

R&D and manufacturing modulation with internal 8664A but up to 6 GHz

delay and width adjust for coverage of most

surveillance radars

Avionics Option 8644B-009 Coverage of most Same performance as

provides specified weather and avionics 8664A up to 6 GHz
VOR/ILS signal radars. Option 8664A-008
simulation provides pulse modulation

capable of generating
appropriate pulse width
and delay internally

1. For FM receivers with approximately 14 kHz IF BW and 25 kHz channel spacing

4

Performance backed by Agilent’s reputation and manufacturing experience

Every Agilent Technologies’
signal generator meets speci­fications that would reject
most other signal generators

Before any Agilent Technologies’ signal
generator is introduced, specifications are
set to assure that the product will perform
consistently for your application. The
specification setting process is reflective
of the quality that Agilent has always
strived to deliver. An explanation of Agilent’s
specification setting process will show the
confidence that you can have when
selecting an Agilent Technologies
signal generator.

The model used for specification setting is
illustrated in the above right figure. The
following text defines each element in
the figure.

• Production margin is the difference
between the average product perform­ance and the test line limit (TLL). This
TLL is the pass/fail limit used by the
production line at final test under
standard environmental conditions.

• Delta environmental represents the
possible change in performance over
the environmental extremes (e.g.,
temperature and humidity).

• Drift represents the change in perform­ance over the calibration period.

• Measurement uncertainty accounts for
possible measurement errors in the
equipment used to characterize the
signal generator.

• Customer guardband represents any
additional margin necessary to ensure a
worst case scenario.

This process means that whether the signal
generator is placed in a high temperature
environment such as at the top of a rack of
equipment or a well controlled environment,
the performance stated in our specifications
can be relied on for your most exacting
applications. This process guarantees that
the signal generator is introducing the
minimum error possible in the measure­ments you are performing.

Typical performance

Since some applications push the limits
of specifications, Agilent Technologies
also provides data that indicates typical
performance. This typical performance is
generally set at the test line limit (TLL),
which is significantly better than the war­ranted specification. Use the typical data
when comparing different products, or when
your application pushes the limit on a given
specification. The following information
highlights typical performance for the
most common areas of interest for the
8644B, 8664A and 8665B.

Production

margin

Delta

environmental

and drift

Measuremant

uncertainty

Customer

guardband

Average TLL SPEC

(warranted)

5

Typical performance, for
applications that push
specifications

SSB phase noise

SSB phase noise is an important specifica­tion of a signal generator if it is to be used
for measuring the adjacent channel selec­tivity of a receiver. If the phase noise of the
signal generator is too high at frequency
offsets equal to the channel spacing, the
test results might indicate a failure of the
receiver when it is actually functioning
properly. If the selectivity is ≥ 90 dB, the
8644B (or Option 8664A-004, or Option
8665B-004) is recommended.

Output level accuracy

Output level accuracy is a combination of
temperature variation, flatness over fre­quency, and the signal generator’s internal
attenuator and detector accuracies. The
graph represents worst case output level
accuracy of a sampling of 8665Bs. All of
these units fall within the shaded area.

RF leakage

Due to radios becoming more sensitive
and operating at higher frequencies, the
traditional two-turn loop measurement of
RF leakage has become inadequate. To
overcome the shortcomings of the two­turn loop, Agilent has developed a new
measurement technique using resonant
dipole antennas, which is 20 to 25 dB more
sensitive than the two-turn loop method.
Agilent has been able to reduce the level
of radiated emissions in its newer signal
generators through innovative design and
packaging. Understanding that not all
applications require the lowest possible
emissions, Option 010 (i.e., 86xxx-010) is
available on all of these performance
signal generators.

-60

-80

Typical SSB phase noise and spurs at 1 GHZ

-100

-120
Option 004

-140

SSB phase noise (dBc/Hz)

-160

10 100 1K 10K 100K 1M 10M

-60

-80

-100

-120

-140

SSB phase noise (dBc/Hz)

-160

10 100 1K 10K 100K 1M 10M 40M

Typical output level accuracy for the 8665B at - 115 dBm

2.0

1.0

0.5

(f) [dBc/Hz] vs. f[Hz]

Typical SSB phase noise and spurs at 1 GHZ

8644B

(f) [dBc/Hz] vs. f[Hz]

8664A 8665B

standard

-0.5

-1.0

-2.0

1000 2000 3000 4000 5000 6000

-85

-90

-95

-100

dBm

-105

-110

-115

-120

-125
515 550 600 650 700 750 800 850 900 950 1029

Carrier frequency (MHz)

8644B typical leakage

Standard

Option 8644B-010

MHz

Specification

6

Internal modulation source

• Low distortion sinewaves to 400 kHz
with variable phase and amplitude.

• Triangle, sawtooth and squarewaves to
50 kHz with variable phase and amplitude.

• White Gaussian noise with variable
amplitude.

• Two independent sources for two-tone
testing.

Optional pulse modulation
(Options 8664A-008 and
8665B-008)

• An Agilent designed GaAs pulse
modulator provides the exceptional
performance that is so critical for pulsed
applications.

• < 5 ns rise/fall times, > 80 dB on/off
ratio

• Built-in pulse generator features
include variable pulse delay and width
from 50 ns to 999 ms. This saves
purchasing additional equipment.

• Leveled RF output maintains accuracy
while in pulse modulation.

High reliability electronic
attenuator (optional on 8644B)

For applications up to 1 GHz, the electronic
attenuator provides increased reliability.
Instead of using mechanical relays, the
electronic attenuator uses solid-state com­ponents for setting output levels accurate
to within ±1.0 dB. The Agilent patented
design uses PIN switching elements with
three million hours of MTBF, giving the
attenuator an estimated 0.2% failure rate.

Features that improve the usability of Agilent’s 8644B, 8664A and 8665B
for your application!

7

Wideband FM (8664A and
8665B)

• Typical rates to 5 MHz with 2 MHz of
deviation, or rates to 800 kHz with
10 MHz of deviation (fc> 1500 MHz)
allows testing of most wideband
receivers.

• Excellent FM linearity is inherent due to
YIG oscillator design.

• Stable dc-coupled FM for measurements
that require low carrier drift.

Performance signal generator
series features

• High stability oven controlled timebase
is standard.

• Surface mount construction for
improved reliability.

• Three year calibration cycle (MTBC)
means less time in the calibration lab.

• Built-in self-diagnostics and calibration
saves valuable time by significantly
reducing down time.

2 GHz frequency counter
(Option 8644B-011)

• 20 Hz to 2 GHz frequency counting via
front panel connector.

• Cost and space efficient solution for
applications involving audio frequency
measurements, local oscillator, IF and
transmitter testing.

• Eliminates the need to externally couple
the timebase references when using an
external counter.

8

8644B 8664A, 8665B

Frequency

Range: 0.252 to 1030 MHz 0.1 to 3000 MHz 8664A

0.252 to 2060 MHz, Option 8644B-002 0.1 to 6000 MHz 8665B
Resolution: 0.01 Hz 0.01 Hz
Accuracy (std. timebase): 0.375 x 10

-6

times carrier in Hz 0.375 x 10-6times carrier in Hz

< 1 year of calibration
Switching speed (typical): < 350 ms < 50 ms (within 0.33 ppm)
(within 100 Hz) < 100 ms 8664A-004 or 8665B-004

Spectral purity

SSB phase noise (dBc/Hz):
(at 20 kHz offset)

Carrier (MHz) Standard Option 004 (866xx-004)

4120 to 6000 NA –105 –116

3000 to 4120 NA –105 –122

2060 to 3000 NA –111 –122

1030 to 2060 –130 (Option 8644B-002) –111 –128

515 to 1030 –136 (–142 typical) –117 –134

257.5 to 515 –142 –122 –139

128.5 to 257.5 –145 N/A N/A

0.25 to 128.5 –145 N/A N/A

8664A, 8665B

187.5 to 257.5 NA –128 –144

0.1 to 187.5 NA –117 –131

Nonharmonics: < –105 dBc, > 10 kHz offset, < –100 dBc, > 10 kHz offset,

0.252 to 1030 MHz 187.5 to 2060 MHz
< –100 dBc, > 10 kHz offset, < –90 dBc, > 10 kHz offset,
1030 to 2060 MHz 2060 to 6000

1

MHz, 0.1 to 187.5 MHz
Harmonics: < –25 dBc, output ≤ +10 dBm < –30 dBc, output ≤ +10 dBm
Subharmonics: None, 0.252 to 515 MHz < –75 dBc, 0.1 to 1500 MHz

< –52 dBc, 515 to 1030 MHz < –40 dBc, 1500 to 3000 MHz
< –40 dBc, 1030 to 2060 MHz < –50 dBc, 3000 to 60001 MHz

Residual FM (Hz rms): Standard Standard/Option 004 (866xx-004)

Carrier (MHz) 3 kHz BW 15 kHz BW 3 kHz BW 15 kHz BW

2060 to 60001 –– < 60/< 10 < 80/< 32
1030 to 2060 < 2 < 4 < 15/< 2.5 < 20/< 8
515 to 1030 < 1 < 2 < 7.5/< 1.2 < 10/< 4

257.5 to 515 < 0.5 < 1 < 7.5/< 1.2 < 10/< 4

0.25 to 257.5 < 0.5 < 0.5 ––

8664A, 8665B

187.5 to 257.5 –– < 7.5/< 1.2 < 10/< 4

0.1 to 187.5 –– < 15/< 2.5 < 20/< 8

Residual AM: < 0.01% AM rms < 0.04% AM rms
(0.3 to 3 kHz post det. BW)
SSB AM noise floor (dBc/Hz): < –157, 10 dBm, < 1030 MHz < –137, 13 dBm, < 187.5 MHz
(offsets > 100 kHz) < –150, 10 dBm, < 2060 MHz < –150, 13 dBm, > 187.5 MHz

Internal reference oscillator Standard high stability Option 001 high stability with EFC

Aging: +1.5 x 10

-8

/day after ten days ±3 x 10

-10

/day after 10 days

Temperature: +7 x 10

-10

, 0 to 55 °C ±6 x 10

-10

, to 55 °C

Line voltage: ±2 x 10

-10

, (+5%, -10%) ±1 x 10

-10

, ±10%

Output: 10 MHz, > 0.15 V

rms

level into 50 Ω 10 MHz, > 1 V

rms

level into 50 Ω

External reference input: Accepts 10 MHz ±5 ppm and a level range of 0.5 V to 2 V

rms

into 50 Ω

Electronic frequency control (EFC): Option 001 (86xxx-001) only, +0.01 ppm for ±1 Vdc at rear panel connector, voltage range ±10 Vdc,

input impedance 10k Ω

Specifications

1. 3000 MHz for 8664A, 6000 MHz for 8665B

9

8644B 8664A, 8665B

Output level

Range: +16 to –137 dBm, +13 to -139.9 dBm

+13 dBm, 8644B-002/005 +9 dBm, Option 8664A-008 or 8665B-008
Resolution: 0.01 Hz 0.01 Hz
Absolute accuracy: ±1 dB, output ≥ –127 dBm ±1 dB, output ≥ –119.9 dBm, 1 - 1000 MHz

±3 dB, output < –127 dBm ±1.5 dB, output ≥ –119.9 dBm, 1000 to 3000 MHz

±2 dB, output ≥ –119.9 dBm, 3000 to 6000

1

, < 1 MHz

±3 dB, output ≥ –129.9 dBm

Reverse power protection: 50 watts 25 watts

2

, 0.1 to 2060 MHz

1 watt, > 2060 MHz
Third order intermod: < –50 dBc < –47 dBc
(frequencies < 1300 MHz, two
signals at +8 dBm, 25 kHz apart
through a resistive combiner)
Overrange: Typically 2 dB Typically 2 dB
Switching speed (typical): < 50 ms < 50 ms
SWR:

Output level < 3000 MHz ≥ 3000 MHz

≥ 0 dBm < 2.2:1 < 1.75:1 < 2.0:1

< 0 dBm < 1.5:1 < 1.5:1 < 1.75:1

Output impedance: 50 Ω 50 Ω

Amplitude modulation

Depth: 0 to 100%, output ≤ +7 dBm 0 to 100%, output ≤ +7 dBm
Resolution: 0.1% 0.1%
Bandwidth (3 dB): dc to > 100 kHz, > 128 MHz dc to > 10 kHz for > 10 MHz
Accuracy: 1 kHz rate ±(7% of setting +1%) up to 80% depth ± (6% of setting +1%) up to 90% depth
Distortion: < 3%; < 4%, 8644B-002 < 4%
30% depth, 1 kHz rate
Incidental phase modulation: < 0.2 radians peak < 0.2 radians peak, ≤ 2000 MHz
(at 30% depth, 1 kHz rate) < 0.2 radians peak, > 2000 MHz
External input impedance: 600 Ω 600 Ω

Frequency modulation

Maximum peak deviation: 20 MHz/200 kHz3, > 1030 MHz 20 MHz, 3000 to 60001MHz

10 MHz/100 kHz3, > 515 MHz 10 MHz, 1500 to 3000 MHz
5 MHz/50 kHz3, > 257.5 MHz 5 MHz, 750 to 1500 MHz

2.5 MHz/25 kHz, > 128.5 MHz 2.5 MHz, 375 to 750 MHz

1.25 MHz/12.5 kHz

3

, > 64 MHz 1.25 MHz, 187.5 to 375 MHz

62.5 kHz/6.25 kHz3, > 32 MHz 5 MHz, < 187.5 MHz
Deviation halves per lower octave
(> 16, > 8, > 4, > 2, > 1, > 0.5 MHz)

Resolution: 2.5% of setting 2.5% of setting
Bandwidth (3 dB): dc to 100 kHz dc to 800 kHz
Carrier accuracy in FM: ±0.5% of setting ±0.6% of setting
Indicator accuracy: < 5%, < 30 kHz rates ±9%, < 20 kHz rates

< 10%, < 100 kHz rates ±11%, < 20 kHz rates, 8664A-004 or 8665B-004

Distortion: < 5%, < 1%

3

20 Hz to 100 kHz < 1%, 20 Hz to 20 kHz rates
Incidental AM: < 0.5%, deviation ≤ 20 kHz < 0.3%, deviation ≤ 20 kHz
External group delay: < 10 µs, ≤ 100 kHz rates < 30 µs, ≤ 2 0 kHz rates
External input impedance: 600 Ω 600 Ω

Specifications (continued)

1. 3000 MHz for 8664A, 6000 MHz for 8665B

2. One watt on 8665B

3. Low noise mode three

10

8644B 8664A, 8665B

Pulse modulation

Options 8664A-008 and 8665B-008

On/off ratio: > 35 dB, > 80 dB, > 1030 MHz > 80 dB
Rise/fall time, 10 to 90%: < 100 ns < 5 ns
Repetition rate: dc to 1 MHz dc to 10 MHz
Internal width/delay: N/A Variable from 50 ns to 1 s ±5%

accuracy, 0.2% of full scale

resolution
Minimum width: 0.5 ms 10 ns
Video feedthrough/overshoot: < 15% < 25%
Output level accuracy: ±2 dB Same as standard
External inputs/outputs: Input level: on state; > 3.0 V

peak

Input level: TTL into 50 Ω or

(600 Ω input impedance) off state; < 0.8 V

peak

Schottky TTL

Sync out and video out: TTL

into 50 Ω

Internal modulation source

Number of sources: Two sources simultaneously available through summation, independently adjustable in frequency,

phase, amplitude and waveform. Source one may also be internally modulated with AM, FM, phase
modulation and pulse modulation to create a subcarrier waveform.

Waveforms and rates: Sine, white Gaussian noise; 0.1 Hz to 400 kHz

Triangle, sawtooth, square; 0.1 Hz to 50 kHz
Frequency accuracy: Same as timebase
Output level (into 600 Ω): 1 V

peak

, 2 V

peak

for 8644B

Output resolution: 2 mV

peak

Total harmonic distortion: < 0.1%, ≤ 20 kHz rates

Frequency sweep

Digital sweep: Digitally stepped sweep over entire frequency range. Linear/log selection. 0.5 to 1000 sec sweeps.
Markers/Z axis output: Three markers available /Z axis output nominally +5 V/X axis output nominally 0 to 10 V.
Phase continuous sweep: 40 MHz of span available at maximum carrier frequency. Twenty ms to ten sec sweep times.

Remote programming

Interface: GPIB (IEEE 488.2-1987).
Control language: Hewlett-Packard Systems Language (HP-SL). All functions controlled except power.
IEEE-488 functions: SH1, AH1, T6, TEO, L4, LEO, SR1, RL1, PPO, DC1, DTO, CO, E2.

Specifications (continued)

11

8644B 8664A, 8665B

Avionics Option 8644B-0009 8644B-009 provides the performance needed for testing VOR N/A

and ILS (localizer, glide slope and marker beacon) receivers.

8644B-009 provides guaranteed specifications necessary to

make these demanding tests.
VOR (108 to 118 MHz) Bearing accuracy: 0.1°, frequency accuracy: Same as timebase,

AM accuracy (30%): ±5% of setting, AM distortion: 2%,

FM accuracy (480 Hz dev.): ±1.5 Hz
ILS: localizer/glide slope DDM resolution: Localizer: 0.0002 Glide slope: 0.0004

(108 to 112 MHz/329.3 to DDM accuracy: Localizer: ±0.0004 ±5% of DDM
335 MHz) Glide slope: ±0.0008 ±5% of DDM

Marker beacon (75 MHz): AM accuracy: ±5% of setting AM distortion: 2%

AM accuracy (95%): ±5% of setting +1% AM distortion: 5%

2 GHz counter Option 011

Frequency range: 20 Hz to 2 GHz in three ranges N/A
Sensitivity: 25 mV

rms

(–19 dBm into 50 Ω)

Maximum input: 2.25 V

rms

(+20 dBm into 50 Ω)
Impedance: 50 Ω, 10 MHz to 2 GHz; 1 M Ω shunted by < 65 pf, < 10 MHz
Coupling: ac
Gate times: 0.1s to 1s in 0.1s steps
Measurement resolution: Measured frequency (Hz) x 10

-8

/gate time or 0.01 Hz if greater

Measurement uncertainty: (± time base accuracy) plus (± measurement resolution)

General

Power requirements: ±10% of 100 V, 120 V, 220 V or 240 V; 48 to 440 Hz; 500 VA except 8644B 400 VA.
Operating temperature: 0 to 55 °C
Leakage: Conducted and radiated interference meets MIL STD 461 B REO2 and FTZ 1046.

Leakage is measured into a resonant dipole antenna, one inch from the instrument’s surface
with output level < 0 dBm (all inputs/outputs properly terminated, f

c

< 1 GHz).
Leakage is typically < 16 µV or < 2 µV with Option 010, measured at the front panel.
The older two-turn loop method of measurement is typically < 1 µV or < 0. 1 µV for Option 010.

Acoustic noise: Typically < 5.5 bels
Storage registers: Ten full function and 40 frequency/amplitude registers.
Calibration/diagnostics: Internal calibration and diagnostics functions are available to the user. Built-in test capability

locates circuit malfunctions to allow repair through module replacement.

Calibration interval: Recommended three years (MTBC).
Weight: 8644B; 30 kg (67 lbs). 8664A/8665B; 35 kg (78 lbs)
Dimensions: 177H x 426W x 601D mm (7 x 16.8 x 23.7 in.). Option 010 adds 35 mm (1.4 in.) to depth.

Specifications (continued)

177 mm
(7.0 in.)

426 mm

16.8 in.)

TOP

17 mm

(0.7 in.)

23 mm

(0.09 in.)

SIDE

Option 010 in creases depth by 35 mm (1.4 in.)

601 mm

23.7 in.)

12

Ordering information

Note: To add options to a product, specifiy the model number, followed by the

option number. For example:

Models: 8644B, 8664A, 8665B
Option 8644A-005 or Option 8665B-010

8644B 8664A

8665B

Options:

001 High stability time base with EFC ✓✓
002 2 GHz doubled output ✓✓
003 Rear panel input/output ✓✓
004 Low noise option Not applicable ✓
005 Electronic attenuator (N/A with Option 002) ✓✓
008 Pulse modulation ✓✓
009 Specified VOR/ILS ✓✓
010 Reduced leakage configuration ✓✓
011 2 GHz internal frequency counter ✓✓
907 Front handle kit (5061-9690) ✓✓
908 Rack flange kit (5061-9678) ✓✓
909 Combined front/rack flange kit (5061-9684) ✓✓
915 Add service manual service kit 08645-61116 08665-61116
R1281A Additional 3 years of return warranty ✓✓

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© Agilent Technologies, Inc. 2001, 2002
Printed in USA, November 4, 2002

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