Atec Agilent-E8257D User Manual

Agilent E8257D PSG
Analog Signal Generator

Data Sheet

The Agilent E8257D is a fully synthesized signal generator with high output
power, low phase noise, and optional ramp sweep capability.

Specifications 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, nominal, or measured, provide additional (non-warranted) information

at 25 °C, which may be useful in the application of the product.

Definitions

Specifications (spec): Represents warranted performance for instruments with a

current calibration.

Typical (typ): Represents characteristic performance which is non-warranted.
Describes performance that will be met by a minimum of 80% of all products.

Nominal (nom): Represents characteristic performance which is non-warranted.
Represents the value of a parameter that is most likely to occur; the mean and/or mode
of all measurements of a parameter.

Measured: Represents characteristic performance which is non-warranted. Represents
the value of a parameter measured on an instrument during design verification.

Table of Content s

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Step (digital) sweep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Ramp (analog) sweep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Spectral purity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Frequency modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Phase modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Amplitude modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

External modulation inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Internal modulation source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Pulse modulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Narrow pulse modulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Internal pulse generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Simultaneous modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Remote programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Input/Output Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Front panel connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Rear panel connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Options, Accessories, and Related Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Web Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Related Agilent Literature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2

Specifications

Frequency

1

Range

Option 520 250 kHz to 20 GHz
Option 532 250 kHz to 31.8 GHz
Option 540 250 kHz to 40 GHz
Option 550 250 kHz to 50 GHz
Option 567 250 kHz to 67 GHz (operational up to 70 GHz)
Resolution
CW 0.001 Hz
All sweep modes 0.01 Hz

CW switching speed

3, 4

< 11 ms (typ)

2

7 ms (nom)

Phase offset Adjustable in nominal 0.1 ° increments
Frequency bands
Band Frequency range N

5

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
9 > 40 GHz 8
Accuracy ± aging rate ± temperature effects
± line voltage effects (nom) ± calibration accuracy

Internal timebase reference oscillator

Standard
Aging rate < ±3 x 10
< ±2.5 x 10

7

Option UNR/UNX

–8

/year or < ±3 x10–8/year or

–10

/day < ±2.5 x 10

–10

/day

after 30 days after 30 days

Temperature effects (typ) < ±4.5 x 10
Line voltage ef fects (typ) < ±2 x 10

–9

0 to 55 °C < ±4.5 x 10

–10

for < ±2 x 10

–9

0 to 55 °C

–10

for
±10% change ±10% change
External reference frequency
10 MHz only 10 MHz only
Lock range ±1.0 ppm ±1.0 ppm
Reference output
Frequency 10 MHz
Amplitude > +4 dBm into 50 Ω load (t yp)

External reference input

Amplitude 5 dBm ±5 dB
Option UNR/UNX 5 dBm ±5 dB

6

Input impedance 50 Ω (nom)

1. Operational, but unspecified, down to 100 kHz.

2. In ramp sweep mode (Option 007), resolution is limited with narrow spans and slow sweep speeds. Refer to ramp sweep
specifications for more information.

3. Time from GPIB trigger to frequency within 0.1 ppm of final frequency above 250 MHz or within 100 Hz below 250 MHz.

4. Add 12 ms (typical) when switching from greater than 3.2 GHz to less than 3. 2 GHz.

5. N is a factor used to help define certain specifications within the document.

6. To optimize phase noise use 5 dBm ± 2 dB.

7. Standard performance applies to units with serial numbers ending with 48050000 or greater. For units with lower serial
numbers, refer to the data sheet shipped with the unit or the version of this document dated November 5, 2007.

3

Step (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)
Sweep range
Frequency sweep Within instrument frequency range
Amplitude sweep Within attenuator hold range (see “Output” section)

Dwell time 1 ms to 60 s
Number of points 2 to 65535 (step sweep)

2 to 1601 per table (list sweep)

Triggering Auto, external, single, or GPIB
Settling time

Frequency < 8 ms (typ)

1

Amplitude < 5 ms (typ)

Ramp (analog) sweep

(Option 007)

4

2

Operating modes • Synthesized frequency sweep
(start/stop), (center/span), (swept CW)

• Power (amplitude) sweep (start/stop)

• Manual sweep
RPG control between start and stop frequencies

• Alternate sweep
Alternates successive sweeps between current and
stored states
Sweep span range Settable from minimum

3

to full range

Maximum sweep rate Start frequency Maximum sweep rate Max span for
100 ms sweep

250 kHz to < 0.5 GHz 25 MHz/ms 2.5 GHz

0.5 to < 1 GHz 50 MHz/ms 5 GHz
1 to < 2 GHz 100 MHz/ms 10 GHz
2 to < 3.2 GHz 200 MHz/ms 20 GHz
≥ 3.2 GHz 400 MHz/ms 40 GHz
Frequency accuracy ± 0.05% of span ± timebase (at 100 ms sweep time, for
sweep spans less than maximum values given above)
Accuracy improves proportionally as sweep time increases
Sweep time (forward sweep, not including bandswitch and retrace
intervals)
Manual mode settable 10 ms to 200 seconds
Resolution 1 ms
Auto mode Set to minimum value determined by maximum sweep
rate and 8757D setting

Triggering Auto, external, single, or GPIB
Markers 10 independent continuously variable frequency markers

Display Z-axis intensity or RF amplitude pulse
Functions M1 to center, M1/M2 to start/stop, marker delta

Two-tone (master/slave) Two PSG’s can synchronously track each other, with
measurements5 independent control of start/stop frequencies
Network analyzer Fully compatible with Agilent 8757D scalar
compatibility network analyzer6

Also useable with Agilent 8757A/C/E scalar network
analyzers for making basic swept measurements.

7

1. 19 ms (typ) when stepping from greater than 3.2 GHz to less than 3.2 GHz.

2. During ramp sweep operation, AM, FM, phase modulation, and pulse modulation are useable but performance is not guaranteed.

3. Minimum set table sweep span is proportional to carrier frequency and sweep time. Actual sweep span may be slightly
different than desired setting for spans less than [0.00004% of carrier frequency or 140 Hz] x [sweep time in seconds]. Actual
span will always be displayed correctly.

4. Typical accuracy for sweep times > 100 ms can be calculated from the equation: [(0.005% of span)/(sweep time in seconds)]
± timebase. Accuracy is not specified for sweep times < 100 ms.

5. For master/slave operation use Agilent part #8120-8806 master/slave interface cable.

6. When measuring low-pass devices in AC mode, dynamic range may be reduced up to 10 dB below 3.2 GHz. A n external
highpass filter may be required to remove 27 kHz pulse source feed-through (For instruments operating from 10 MHz to 20 GHz
with 3.5 mm connectors, use Bias Tee part number 5086-7322. For instruments operating from 10 MHz to 50 GHz with 2.4 mm
connectors, use Bias Tee part number 5086 -7484.)

7. GPIB system interface is not supported with 8757A/C/E, only with 8757D. As a result, some features of 8757A/C/E, such
as frequency display, pass-through mode, and alternate sweep, do not function with PSG signal generators.

4

Output

Power1 (dBm)
Frequency range Standard Option 1EA

spec. (typ)
Option 520:

250 kHz to 3.2 GHz –20 to +15
250 kHz to 3.2 GHz with Option UNW –20 to +11 –20 to +11 (+14)
250 kHz to 3.2 GHz with Option 1EH –20 to +13
250 kHz to 3.2 GHz with Options UNW and 1EH – 20 t o +10

5

–20 to +16 (+19)

2

–20 to +13 (+16)2

2

–20 to +10 (+13)
> 3.2 Ghz to 5.2 GHz –20 to +155 –20 to +22 (+23)
> 5.2 Ghz to 12 GHz –20 to +155 –20 to +23 (+24)
> 12 Ghz to 20 GHz –20 to +155 –20 to +21 (+23)

Options 532 and 540:

250 kHz to 3.2 GHz –20 to +115 –20 to +15 (+18)
250 kHz to 3.2 GHz with Option UNW –20 to +9 –20 to +10 (+13)
250 kHz to 3.2 GHz with Option 1EH –20 to +9 –20 to +12 (+15)
250 kHz to 3.2 GHz with Options UNW and 1EH – 20 to +92 –20 to +9 (+12)

2

> 3.2 to 17 GHz –20 to +115 –20 to +19 (+21)
> 17 to 37 GHz –20 to +115 –20 to +16 (+19)
> 37 to 40 GHz –20 to +115 –20 to +14 (+17)

Options 550 and 567:

250 kHz to 3.2 GHz –20 to +5 –20 to +14 (+17)
250 kHz to 3.2 GHz with Option UNW –20 to +5 –20 to +9 (+12)
250 kHz to 3.2 GHz with Option 1EH –20 to +5 –20 to +11 (+14)
250 kHz to 3.2 GHz with Options UNW and 1EH – 20 to +5 –2 0 to +8 (+11)

2

> 3.2 to 10 GHz –20 to +5 –20 to +14 (+21)
> 10 to 20 GHz –20 to +5 –20 to +14 (+17)
> 20 to 30 GHz –20 to +5 –20 to +11 (+17)
> 30 to 65 GHz –20 to +5 –20 to +11 (+14)
> 65 to 67 GHz –20 to +5 –20 to +10 (+14)
> 67 to 70 GHz –20 to +5 (typ) –20 to +8 (typ)

Option 520 with step attenuator (Option 1E1):

250 kHz to 3.2 GHz –135 to +13
250 kHz to 3.2 GHz with Option UNW –135 to +10 –135 to +10 (+13)
250 kHz to 3.2 GHz with Option 1EH –135 to +11
250 kHz to 3.2 GHz with Options UNW and 1EH –135 to +9
> 3.2 GHz to 10 GHz –135 to +13

> 10 GHz to 20 GHz –135 to +135 –135 to +19 (+20)

5

–135 to +15 (+18)

3

–135 to +12 (+15)2

2

–135 to +9 (+12)2

5

–135 to +21 (+22)

Options 532 and 540 with step attenuator (Option 1E1):

250 kHz to 3.2 GHz –135 to +95 –135 to +14 (+17)
250 kHz to 3.2 GHz with Option UNW –135 to +7 –135 to +9 (+12)
250 kHz to 3.2 GHz with Option 1EH –135 to +7 –135 to +11 (+14)
250 kHz to 3.2 GHz with Options UNW and 1EH –135 t o +73 –135 to +8 (+11)
> 3.2 to 17 GHz –135 to +95 –135 to +17 (+20)
> 17 to 37 GHz –135 to +95 –135 to +14 (+17)
> 37 to 40 GHz –135 to +95 –135 to +12 (+16)

Options 550 and 567 with step at tenuator (Option 1E1):

250 kHz to 3.2 GHz –110 to +3 –110 to +13 (+16)
250 kHz to 3.2 GHz with Option UNW –110 to +3 –110 to +8 (+11)
250 kHz to 3.2 GHz with Option 1EH –110 to +3 –110 to +10 (+13)
250 kHz to 3.2 GHz with Options UNW and 1EH –110 to +3 –110 t o +7 (+10)
> 3.2 to 10 GHz –110 to +3 –110 to +13 (+20)
> 10 to 20 GHz –110 to +3 –110 to +13 (+16)
> 20 to 30 GHz –110 to +3 –110 to +9 (+16)
> 30 to 65 GHz –110 to +3 –110 to +9 (+12)
> 65 to 67 GHz –110 to +3 –110 to +8 (+12)
> 67 to 70 GHz –110 to +3 (typ) –110 to +6 (typ)

2

4
4

4

2

4
4

2

4

4

2

2

4
4

2

2

1. Maximum power specifications are warranted from 15 to 35 °C, and is typical from 0 to 15 °C. Maximum power over the 35 to 55 °C
range typically degrades less than 2 dB.

2. W ith harmonic filters switched off. With filters on, maximum output power is reduced 3 dB for frequencies below 2 GHz.

3. With harmonic filters switched of f. With filters on, maximum output power is reduced 2 dB for frequencies below 2 GHz.

4. Specification applies to units with serial numbers ending with 45470000 or greater. For units with lower serial numbers, refer to the data
sheet shipped with the unit or the version of this document dated December 16, 2004.

5. Standard performance applies to units with serial numbers ending with 48050000 or greater. For units with lower serial
numbers, refer to the data sheet shipped with the unit or the version of this document dated November 5, 2007.

5

Step attenuator1 (Option 1E1)

Option 520 with Option 1EA (measured

26

24

22

20

18

16

0 5000

Frequency (MHz)

Option 550/567 with Option 1EA (measur

Output power (dBm)

Frequency (GHz)

30

25

20

15

10

5

0

0 1020 3040506070

Option 532/540 with Option 1EA (measu

26

24

22

20

18

16

0 10000

Frequency (MHz)

Options 520, 532, and 540 0 dB and 5 dB to 115 dB in 10 dB steps
Options 550 and 567 0 dB to 90 dB in 10 dB steps

Maximum available power (measured)

1. The step attenuator provides coarse power attenuation to achieve low power levels. Fine power level adjustment is provided
by the ALC (Automatic Level Control) within the attenuator hold range.

6

2. To within 0.1 dB of final amplitude within one attenuator range. Add 10 to 50 ms when using power search.

3. Specifications apply in CW and list/step sweep modes over the 15 to 35 ºC temperature range with the ALC on. Degradation
outside this range, for power levels > –10 dBm, is typically < 0. 3 dB. In ramp sweep mode (with Option 007), specifications
are typical. For instruments with Type-N connectors (Option 1ED), specifications are degraded typically 0.2 dB above 18 GHz.
Specifications do not apply above the maximum specified power.

Attenuator hold range
Minimum From –20 dBm to maximum specified output power with step

attenuator in 0 dB position. Can be offset using Option 1E1 at tenuator.

Amplitude switching speed

2

ALC on or off < 3 ms (t yp)
(without power search)

Level accuracy

3

(dB)

Frequency > +10 dBm +10 to 0 dBm 0 to –10 dBm –10 to –20 dBm

250 kHz to 2 GHz ±0.6 ±0.6 ±0.6 ±1.4
> 2 GHz to 20 GHz ±0.8 ±0.8 ±0.8 ±1.2
> 20 to 40 GHz ±1.0 ±0.9 ±0.9 ±1.3
> 40 to 50 GHz --- ±1.3 ±0.9 ±1.2
> 50 to 67 GHz --- ±1.5 ±1.0 ±1.2 (typ)

Level accuracy with step attenuator (Option 1E1)1 (dB)

0.25

0.2

0.15

0.1

0.05
0

-0.05

-0.1

-0.15

-0.2

Errorr (dB)

Frequency (GHz)

Option 520 with Option 1E1 at -110 dBm (me

048121620

Option 550/567 with Option 1E1 at -90 dBm

Errorr (dB)

Frequency (GHz)

0 10 203040506070

1

0.5

0

-0.5

-1

0.8

0.6

0.4

0.2

0

-0.2

-0.4

-0.6

-0.8

Errorr (dB)

Frequency (GHz)

Option 532/540

with Option 1E1 at -110 dBm

010203040

Frequency > +10 dBm +10 to 0 dBm 0 to –10 dBm –10 to –70 dBm –70 to –90 dBm

250 kHz to 2 GHz ±0.6 ±0.6 ±0.6 ±0.7 ±0.8
> 2 to 20 GHz ±0.8 ±0.8 ±0.8 ±0.9 ±1.0
> 20 to 40 GHz ±1.0 ±0.9 ±0.9 ±1.0 ±2.0
> 40 to 50 GHz --- ±1.3 ±0.9 ±1.5 ±2.5
> 50 to 67 GHz --- ±1.5 ±1.0 ±1.5 (typ) ±2.5 (typ)

Level accuracy (measured)

1. Specifications apply in CW and list /step sweep modes over the 15 to 35 ºC temperature range, with attenuator hold of f
(normal operating mode). Degradation outside this range, for A LC power levels > –10 dBm, is typically < 0.3 dB. In ramp sweep
mode (with Option 0 07), specifications are typical. For instruments with type-N connectors (Option 1ED), specifications are
degraded typically 0.2 dB above 18 GHz. Specifications do not apply above the maximum specified power.

2. Options 5 50 and 567: 0.03dB/°C (typ) above 2 GHz.

3. Compatible with Agilent EPM Series (E4 418B and E4419B) power meters.

Resolution 0.01 dB
Temperature stability 0.01 dB/°C (typ)

2

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

3

, remote bus, manual

(user edit /view)

7

Spectral purity

Option 520 standard harmonic

performance (measured)

Frequency (MHz)

0 2000 4000 6000

-30

-40

-50

-60

-70

-80

Harmonics (dBc)

-3

-4

-5

-6

-7

-8

Harmonics (dBc)

armonic

Option 532/540 standard ha

performance (measured)

Frequency (MHz)

6000 8000 10000

0 5000 1000

-30

-40

-50

-60

-70

-80

Harmonics (dBc)

Option 567 standard harmonic performance

2nd harmonic (dBc)

Carrier frequency (GHz)

-30

-40

-50

-60

-70

-80

-90

-100
0 5 101520253035

Standard

Carrier frequency (MHz)

Standard vs.Option 1EH harmonics (measu

2nd harmonic (dBc)

0

-10

-20

-30

-40

-50

-60

-70

-80

-90

0 500 1000 1500 2000

Option 1EH

Output impedance 50 Ω (nom)
SWR (internally leveled)

250 kHz to 2 GHz < 1.4:1 (typ)
> 2 GHz to 20 GHz < 1.6:1 (typ)
> 20 GHz to 40 GHz < 1.8:1 (typ)
> 40 GHz to 67 GHz < 2.0:1 (typ)
Leveling modes Internal leveling, external detector leveling,
millimeter source module, ALC off

External detector leveling

Range –0.2 mV to – 0.5 V (nom) (– 36 dBm to
+4 dBm using Agilent 33330D/E detector)
Bandwidth Selectable 0.1 to 100 kHz (nom)
(Note: not intended for pulsed operation)
Maximum reverse power 1/2 Watt, 0 V

1

Harmonics

(dBc at +10 dBm or maximum specified

DC

output power, whichever is lower)
< 10 MHz –28 dBc (typical below 1 MHz)
10 MHz to 2 GHz –30 dBc

2,3

10 MHz to 2 GHz (with Option 1EH filters on) –55 dBc4
> 2 GHz to 20 GHz –55 dBc
> 20 GHz to 67 GHz (Option 532, 540, 550 & 567) –50 dBc (typical)

Harmonics (measured)

1. Specifications are typical for harmonics beyond specified frequency range (beyond 50 GHz for Option 567).

2. Specification applies to units with serial numbers ending with 45130000 or greater. For units with lower serial numbers, the specification is –28 dBc.

3. Typical below 250 MHz if Option 1EH is installed and the filters are off.

4. In ramp sweep mode (Option 007), harmonics are –30 dBc below 250 MHz.

8

Sub-harmonics1 (dBc at +10 dBm or maximum specified output

power, whichever is lower)
250 kHz to 10 GHz None
> 10 GHz to 20 GHz < – 60 dBc
> 20 GHz < –50 dBc

Non-harmonics

2

(dBc at +10 dBm or maximum specified output
power, whichever is lower, for offsets > 3 kHz
[> 300 Hz with Option UNX or UNR])

Frequency Spec Typical

250 kHz to 250 MHz –65 –72 for > 10 kHz offsets
> 250 MHz to 1 GHz –80 –88
> 1 to 2 GHz –74 –82
> 2 to 3.2 GHz –68 –76
> 3.2 to 10 GHz – 62 –70
> 10 to 20 GHz –56 –64
> 20 to 40 GHz – 50 – 58
> 40 GHz – 44 – 52

SSB phase noise (CW)

3

Offset from carrier (dBc/Hz)

Frequency 20 kHz 20 kHz (typical)

250 kHz to 250 MHz
> 250 to 500 MHz
> 500 MHz to 1 GHz
> 1 to 2 GHz

4

–130 –134

4

–134 –138

4

4

–130 –134

–124 –128
> 2 to 3.2 GHz –120 –124
> 3.2 to 10 GHz –110 –113
> 10 to 20 GHz –104 –108
> 20 to 40 GHz – 98 –102
> 40 to 67 GHz – 92 – 96

Option UNR: Enhanced SSB phase noise (CW)

3

Offset from carrier (dBc/Hz)
Frequency 100 Hz 1 kHz 10 kHz 100 kHz

spec (typ) spec (typ) spec (typ) spec (typ)

250 kHz to 250 MHz
> 250 to 500 MHz
> 500 MHz to 1 GHz
> 1 to 2 GHz

4

–94 (–115) –110 (–123) –128 (–132) –130 (–133)

4

–100 (–110) –124 (–130) –132 (–136) –136 (–141)

4

–94 (–104) –118 (–126) –130 (–135) –130 (–135)

4

– 88 (–98) –112 (–120) –124 (–129) –124 (–129)
> 2 to 3.2 GHz – 84 (–94) –108 (–116) –120 (–125) –120 (–125)
> 3.2 to 10 GHz –74 (–8 4) –98 (–106) –110 (–115) –110 (–115)
> 10 to 20 GHz – 68 (–78) –92 (–100) –104 (–107) –104 (–109)
> 20 to 40 GHz –62 (–72) –86 (–94) –98 (–101) –98 (–103)
> 40 to 67 GHz –56 (–66) –80 (– 88) –92 (– 95) –92 (–97)

1. Sub-harmonics are defined as Carrier Freq / N). Specifications are typical for sub-harmonics beyond specified frequency
range (beyond 5 0 GHz for Option 567).

2. Specifications are typical for spurs beyond specified frequency range (beyond 50 GHz for Option 567). Specifications apply
for CW mode, without modulation. In ramp sweep mode (Option 007), performance is typical for offsets > 1 MHz.

3. Phase noise specifications are warranted from 15 to 35 °C.

4. Measurement at +10 dBm or maximum specified output power, whichever is less.

9

Option UNX: Absolute SSB phase noise (dBc/Hz) (CW)

1

Offset from carrier
Frequency 1 Hz 10 Hz 100 Hz 1 kHz 10 kHz 100 kHz

Spec (typ) Spec (typ) Spec (typ) Spec (typ) Spec (typ) Spec (typ)

250 kHz to 250 MHz

> 250 to 500 MHz

> 500 MHz to 1 GHz

> 1 to 2 GHz

2

–58 (–66) –87 (–94) –104 (–120) –121 (–128) –128 (–132) –130 (–133)

2

–61 (–72) –88 (–98) –108 (–118) –126 (–132) –132 (–136) –136 (–141)

2

–57 (– 65) –8 4 (– 93) –101 (–111) –121 (–130) –130 (–134) –130 (–135)

2

–51 (–58) –79 (–86) –96 (–106) –115 (–124) –124 (–129) –124 (–129)

> 2 to 3.2 GHz –46 (–54) –74 (–82) –92 (–102) –111 (–120) –120 (–124) –120 (–124)

> 3.2 to 10 GHz –37 (– 44) –65 (–72) –81 (–92) –101 (–109) –110 (–114) –110 (–115)

> 10 to 20 GHz – 31 (–38) –59 (– 66) –75 (–87) –95 (–106) –104 (–107) –104 (–109)

> 20 to 40 GHz –25 (–32) –53 (–60) –69 (–79) –89 (–99) –98 (–101) –98 (–103)

> 40 to 67 GHz –20 (–26) – 47 (–56) –64 (–73) –84 (–90) –92 (–95) –92 (–97)

1

Option UNX: Residual SSB phase noise (dBc/Hz) (CW)
Offset from carrier

Frequency 1 Hz 10 Hz 100 Hz 1 kHz 10 kHz 100 kHz
Spec (typ) Spec (typ) Spec (typ) Spec (typ) Spec (typ) Spec (typ)

250 kHz to 250 MHz

> 250 to 500 MHz

> 500 MHz to 1 GHz

> 1 to 2 GHz

2

(–94) –100 (–107) –110 (–118) –120 (–126) –128 (–132) –130 (–133)

2

(–101) –105 (–112) –115 (–122) –124 (–131) –132 (–136) –136 (–141)

2

(–94) –100 (–107) –110 (–118) –120 (–126) –130 (–134) –130 (–134)

2

(–89) –96 (–101) –104 (–112) –114 (–120) –124 (–129) –124 (–129)

> 2 to 3.2 GHz (–85) –92 (–97) –100 (–108) –110 (–116) –120 (–124) –120 (–124)

> 3.2 to 10 GHz (–74) (–87) (–98) (–106) (–114) (–115)

10

1. Phase noise specifications are warranted from 15 to 35 °C.

2. Measured at +10 dBm or maximum specified power, whichever is less.

Measured phase noise with E5500 and plotted without spurs

Standard SSB phase noise (measured)

1

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

-120

-130

-140

-150

-160

-170

zHG 76
40 GHz
20 GHz
10 GHz
1 GHz

L(f) (dBc/Hz) vs. f (Hz)

10 100 1 k 10 k 100 k 1 M 10 M 100 M

Option UNX absolute SSB phase noise (measured)

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

-120

-130

-140

-150

-160

-170

L(f) (dBc/Hz) vs. f (Hz)

1 10 100 1 k 10 k 100 k 1 M 10 M 100 M

zHG 76
40 GHz
20 GHz
10 GHz
1 GHz

L(f) (dBc/Hz) vs. f (Hz)

Option UNX residual phase noise (measured)

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

-120

-130

-140

-150

-160

-170
1 10 100 1 k 10 k 100 k 1 M 10 M 100 M

10 GHz
3 GHz
1 GHz

L(f) (dBc/Hz) vs. f (Hz)

AM noise at 10 GHz (measured)

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

-120

-130

-140

-150

-160

-170
1 10 100 1 k 10 k 100 k 1 M 10 M 100 M

Standard phase noise

Residual phase noise

Option UNX phase noise

AM noise at 10 GHz

1. Measured standard performance applies to units with serial numbers ending with 48050000 or greater. For units with lower
serial numbers, refer to the data sheet shipped with the unit or the version of this document dated November 5, 2007.

11

Residual FM

(RMS, 50 Hz to 15 kHz bandwidth)
CW mode < N x 6 Hz (typ)
Option UNX /UNR < N x 4 Hz (typ)
Ramp sweep mode < N x 1 kHz (typ)

Broadband noise (CW mode at +10 dBm or maximum specified output
power, whichever is lower, for offsets > 10 MHz)

> 2.4 to 20 GHz < –148 dBc/Hz (typ)
> 20 to 40 GHz < –141 dBc/Hz (typ)
> 40 GHz < –135 dBc/Hz (typ)

Measured RMS jitter

1

Standard

Carrier SONET/SDH RMS jitter Unit intervals Time
frequency data rates bandwidth (µUI) (fs)

155 MHz 155 MB/s 100 Hz to 1.5 MHz 25 158
622 MHz 622 MB/s 1 kHz to 5 MHz 21 3 4

2.488 GHz 2488 MB/s 5 kHz to 20 MHz 57 23

9.953 GHz 9953 MB/s 10 kHz to 80 MHz 152 15

39.812 GHz 39812 MB/s 40 kHz to 320 MHz 627 16

Option UNX

Carrier SONET/SDH RMS jitter Unit intervals Time
frequency data rates bandwidth (µUI) (fs)

155 MHz 155 MB/s 100 Hz to 1.5 MHz 23 151
622 MHz 622 MB/s 1 kHz to 5 MHz 19 30

2.488 GHz 2488 MB/s 5 kHz to 20 MHz 56 22

9.953 GHz 9953 MB/s 10 kHz to 80 MHz 152 15

39.812 GHz 39812 MB/s 40 kHz to 320 MHz 626 16

12

1. Calculated from phase noise performance in CW mode only at +10 dBm. For other frequencies, data rate, or bandwidths,
please contact your sales representative.

Frequency modulation

(Option UNT)

1

Maximum deviation

2

Frequency Maximum deviation
250 kHz to 250 MHz 2 MHz
> 250 to 500 MHz 1 MHz
> 500 MHz to 1 GHz 2 MHz
> 1 GHz to 2 GHz 4 MHz
> 2 GHz to 3.2 GHz 8 MHz
> 3.2 GHz to 10 GHz 16 MHz
> 10 GHz to 20 GHz 32 MHz
> 20 GHz to 40 GHz 64 MHz
> 40 GHz to 67 GHz 128 MHz

Resolution 0.1% of deviation or 1 Hz, whichever is greater
Deviation accuracy < ± 3.5% of FM deviation + 20 Hz

(1 kHz rate, deviations < N x 800 kHz)

Modulation frequency response

3

(at 100 kHz deviation)

Path [coupling] 1 dB bandwidth 3 dB bandwidth (typ)

FM path 1 [DC] DC to 100 kHz DC to 10 MHz
FM path 2 [DC] DC to 100 kHz DC to 1 MHz
FM path 1 [AC] 20 Hz to 100 kHz 5 Hz to 10 MHz
FM path 2 [AC] 20 Hz to 100 kHz 5 Hz to 1 MHz

4

carrier offset ±0.1% of set deviation + (N x 8 Hz)

DC FM
Distortion < 1% (1 kHz rate, deviations < N x 800 kHz)
Sensitivity ±1 V

for indicated deviation

peak

Paths FM1 and FM2 are summed internally for composite
modulation. Either path may be switched to any one of
the modulation sources: Ext1, Ext2, internal1, internal2.
The FM2 path is limited to a maximum rate of 1 MHz.
The FM2 path must be set to a deviation less than FM1.

6

Frequency Normal BW mode High BW mode

Phase modulation

(Option UNT)

5

Maximum deviation

250 kHz to 250 MHz 20 rad 2 rad
> 250 to 500 MHz 10 rad 1 rad
> 500 MHz to 1 GHz 20 rad 2 rad
> 1 GHz to 2 GHz 40 rad 4 rad
> 2 GHz to 3.2 GHz 80 rad 8 rad
> 3.2 GHz to 10 GHz 160 rad 16 rad
> 10 GHz to 20 GHz 320 rad 32 rad
> 20 GHz to 40 GHz 6 40 rad 64 rad
> 40 GHz to 67 GHz 1280 rad 128 rad

Resolution 0.1% of set deviation
Deviation accuracy < ±5% of deviation + 0.01 radians (1 kHz rate, normal

BW mode)

Modulation frequency response
Normal BW mode High BW mode

Rates (3 dB BW) DC to 100 kHz DC to 1 MHz (typ)

7

8

Distortion < 1 % (1 kHz rate, Total Harmonic Distortion (THD),
dev < N x 80 rad, normal BW mode)
Sensitivity ±1 V

for indicated deviation

peak

Paths FM1 and FM2 are summed internally for composite
modulation. Either path may be switched to any one of
the modulation sources: Ext1, Ext2, internal1, internal2.
The FM2 path must be set to a deviation less than FM1.

1. Above 50 GHz, FM is useable; however per formance is not warranted.

2. Through any combination of path1, path2, or path1 + path2.

3. Specifications apply in CW and list/step sweep modes. During ramp sweep operation (Option 007), 3 dB bandwidth is t ypically 50 kHz to 10 MHz
(FM1 path), and 50 kHz to 1 MHz (FM2 path).

4. At the calibrated deviation and carrier frequency, within 5 °C of ambient temperature at time of user calibration.

5. Above 50 GHz, phase modulation is useable; however per formance is not warranted.

6. Through any combination of path1, path2, or path1 + path2.

7. Specifications apply in CW and list/step sweep modes. During ramp sweep operation (Option 007), 3 dB bandwidth is t ypically 50 kHz to 1 MHz
(high BW mode).

8. Path 1 is useable to 4 MHz for external inputs less than 0. 3 V peak.

13

Amplitude modulation 1

(part of Option UNT)
(typical)

Depth Linear mode Exponential (log) mode
(downward modulation only)

Maximum:
ALC On: > 90% > 20 dB
ALC Off with Power Search
or ALC On with Deep AM

2

3

: > 95 % > 40 dB
Settable: 0 to 100 % 0 to 40 dB
(0 to 100 %/volt sensitivity) (0 to 40 dB/volt sensitivity)
Resolution: 0.1% 0.01 dB
Accuracy (ALC On, 1kHz rate): < ±(6% of setting + 1%)
< ± (2% of setting +0.2dB)

Ext sensitivity ± 1 V

for indicated depth –1 V for indicated depth

peak

Rates (3 dB bandwidth, 30% depth)
DC Coupled 0 to 100 kHz
AC coupled 10 Hz to 100 kHz (useable to 1 MHz)

Distortion (1 kHz rate, ALC On, linear mode, Total Harmonic Distor tion)
30% AM < 1.5%
60% AM < 2%

Paths AM1 and AM2 are summed internally for composite
modulation. Either path may be switched to any one of
the modulation sources: Ext1, Ext2, Internal1, Internal2.

14

1. AM specifications are typical. For carrier frequencies below 2 MHz or above 50 GHz , AM is useable but not specified. Unless
otherwise stated, specifications apply with ALC on and envelope peaks within ALC operating range (–20 dBm to maximum
specified power, excluding step-attenuator setting).

2. AL C Off is used for narrow pulse modulation and/or high AM depths, with envelope peaks below ALC operating range.
Carrier power level will be accurate after a Power Search is executed.

3. ALC On with Deep AM provides high AM depths together with closed-loop internal leveling. This mode can be used with a
repetitive AM waveform (frequency > 10 Hz) with peaks > –5 dBm (nominal, excluding step-attenuator setting).

External modulation inputs

(Ext1 & Ext2)
(Option UNT)

Modulation types AM, FM, and FM
Input impedance 50 or 600 (nom) switched
High/low indicator

(100 Hz to 10 MHz BW, Activated when input level error exceeds 3% (nom)
ac coupled inputs only)

Internal modulation source

(Option UNT)

Dual function generators provides two independent signals (internal1 and internal2) for
use with AM, FM, FM, or LF Out.
Waveforms Sine, square, positive ramp, negative ramp, triangle,
Gaussian noise, uniform noise, swept sine, dual sine

Rate range

Sine 0.5 Hz to 1 MHz
Square, ramp, triangle 0.5 Hz to 100 kHz
Resolution 0.5 Hz
Accuracy Same as timebase

LF Out

Output Internal1 or internal2. Also provides monitoring of
internal1or internal2 when used for AM, FM, or FM.
Amplitude 0 to 3 V
Output impedance 50 Ω (nom)
Swept sine mode: (frequency, phase continuous)
Operating modes Triggered or continuous sweeps
Frequency range 1 Hz to 1 MHz
Sweep rate 0.5 Hz to 100 kHz sweeps/s, equivalent to sweep times
10 us to 2 s
Resolution 0.5 Hz (0.5 sweep/s)

, (nom) into 50 Ω

peak

1

1. Internal2 is not available when using swept sine or dual sine modes.

15

Pulse modulation

(Option UNU)

1, 2

500 MHz to 3.2 GHz Above 3.2 GHz

On/Off ratio 80 dB (typ) 80 dB
Rise/Fall times (Tr, Tf) 100 ns (typ) 6 ns (t yp)
Minimum pulse width

Internally leveled 2 us 1 us
Level hold (ALC off with power search) 0.5 us 0.15 us
Repetition frequency
Internally leveled 10 Hz to 250 kHz 10 Hz to 500 kHz
Level hold (ALC off with power search) dc to 1 MHz dc to 3 MHz

Level accuracy (relative to CW)
Internally leveled ±0.5 dB ±0.5 dB
Level hold (ALC off with power search) ±0.5 dB (typ) ±0.5 dB (typ)

Width compression ±50 ns (typ) ±5 ns (typ)
(RF width relative to video out)

Video feed-through

3

< 200 mv (typ) < 2 mv (typ)

Video delay (ext input to video) 50 ns (nom) 50 ns (nom)
RF delay (video to RF output) 270 ns (nom) 35 ns (nom)
Pulse overshoot < 10% (typ) < 10% (typ)
Input level +1 V

= RF On +1 V

peak

peak

= RF On

Input impedance 50 Ω (nom) 50 Ω (nom)

Narrow pulse modulation

(Option UNW)

1. With ALC of f, specs apply after the execution of power search. Specifications apply with Atten Hold Off (default mode for
instruments with attenuator), or ALC level bet ween – 5 and +10 dBm or maximum specific power, whichever is lower.
Above 50 GHz, pulse modulation is useable; however performance is not warranted.

2. Power search is a calibration routine that improves level accuracy with A LC of f. The instrument microprocessor momentarily
closes the ALC loop to find the modulator drive setting necessary to make the quiescent RF level equal to an entered value,
then opens the ALC loop while maintaining that modulator drive setting. When executing power search, RF power will
be present for typically 10 to 50 ms; the step at tenuator (Option 1E1) can be set to automatically switch to maximum
attenuation to protect sensitive devices. Power search can be configured to operate either automatically or manually at the
carrier frequency, or over a user-definable frequency range.

3. With attenuator in 0 dB position. Video feed-through decreases with at tenuator setting.

1, 2

10 MHz to 3.2 GHz Above 3.2 GHz

On/Off ratio 80 dB 80 dB
Rise/Fall times (Tr, Tf) 10 ns (8 ns typical) 10 ns (6 ns typical)
Minimum pulse width

Internally leveled 1 us 1 us
Level hold (ALC off with power search) 20 ns 20 ns
Repetition frequency
Internally leveled 10 Hz to 500 kHz 10 Hz to 500 kHz
Level hold (ALC off with power search) dc to 5 MHz dc to 10 MHz
Level accuracy (relative to CW)
Internally leveled ±0.5 dB ±0.5 dB (0.15 dB typical)
Level hold (ALC off with power search) ±1.3 dB (typ) ±0.5 dB (typ)

16

10 MHz to 3.2 GHz Above 3.2 GHz

Measured pulse modulation envelope

Freq = 10GHz, Amp = 10dBM, ALC = OFF, Pulse w

Timebase (nsec)

0 10 20 30 40

Sync
Output

Video
Output

RF Pulse
Output

T

d

T

m

T

w

T

rf

V

f

T

f

T

r

V

or

T

p

50%

50%

10%

90%

50%

Width compression ±5 ns (typ) ±5 ns (typ)
(RF width relative to video out)

1

Video feed-through

< 125 mv (typ) < 2 mv (typ)

Video delay (ext input to video) 50 ns (nom) 50 ns (nom)
RF delay (video to RF output) 45 ns (nom) 35 ns (nom)
Pulse overshoot < 15% (typ) < 10% (typ)
Input level +1 V

= RF On +1 V

peak

peak

= RF On

Input impedance 50 Ω (nom) 50 Ω (nom)

Internal pulse generator

(Option UNU or UNW)

Simultaneous modulation

1. With attenuator in 0 dB position. Video feed-through decreases with attenuator setting.

Modes Free-run, triggered, triggered with delay,
doublet, and gated. Triggered with delay,
doublet, and gated require external
trigger source.
Period (PRI) (Tp) 70 ns to 42 s
(Repetition frequency: 0.024 Hz to

14.28 MHz)

Pulse width (Tw) 10 ns to 42 s
Delay (Td)

Free-run mode 0 to ±42 s
Triggered with delay and doublet modes 75 ns to 42s with ±10 ns jitter
Resolution 10 ns (width, delay, and PRI)

Td Video delay (variable)
Tw Video pulse width (variable)
Tp Pulse period (variable)
Tm RF delay
Trf RF pulse width
Tf RF pulse fall time
Tr RF pulse rise time
Vor Pulse overshoot
Vf Video feedthrough

All modulation types (FM, AM, FM, and pulse modulations) may be simultaneously
enabled except: FM with FM, and linear AM with exponential AM. AM, FM, and FM
can sum simultaneous inputs from any two sources (Ext1, Ext2, internal1, or internal2).
Any given source (Ext1, Ext2, internal1, or internal2) may be routed to only one activated
modulation type.

17

Remote programming

Interfaces GPIB (IEEE-488.2,1987) with listen and talk,

RS-232, and 10BaseT LAN interface.
Control languages SCPI version 1997.0. Completely code compatible

with previous PSG signal generator models:

• E8241A

• E8244A

• E8251A

• E8254A

• E8247C

• E8257C

The E8257D will emulate the applicable
commands for the following Agilent signal
generators, providing general compatibilit y with
ATE systems:

• 8340-series (8340/41B)

• 8360-series (836xxB/L)

• 83700-series (837xxB)

• 8662A /63A
IEEE-488 functions SH1, AH1, T6, TE0, L4, LE0, SR1, RL1, PP0, DC1,
DT0, C0, E2.
ISO compliant This family of signal generators is manufactured

in an ISO-9001 registered facility in concurrence
with Agilent commitment to quality.

Agilent IO Libraries Agilent’s IO Library Suite ships with the E8257D
to help you quickly establish an error-free
connection between your PC and instruments –
regardless of the vendor. It provides robust
instrument control and works with the software
development environment you choose.

18

General specifications

Power requirements 90 to 132 VAC 47 to 64 Hz or 365 to 435 Hz; or

195 to 267 VAC 47 to 64 Hz, (automatically selected);
< 250 W typical, 300 W maximum.

Operating temperature range 0 to 55 °C

Storage temperature range

1

–40 to 70 °C

Altitude < 4,572 m (15,000 ft.)
Environmental testing Samples of this product have been tested in

accordance with the Agilent Environmental
Test Manual and verified to be robust against
the environmental stresses of storage,
transportation, and end-use; those stresses
include but are not limited to temperature,
humidity, shock, vibration, altitude, and power
line conditions. Test methods are aligned
with IEC 60068-2 and levels are similar to
MIL-PRF-28800F Class 3.

2

EMC Meets the conducted and radiated interference
and immunity requirements of IEC/EN 61326-1.
Meets radiated emission requirements of CISPR
Pub 11/1997 Group 1 class A.

Storage registers Memory is shared by instrument states and
sweep list files. There is 14 MB of flash memory
available in the E8257D PSG. Depending on
how the memory is used, a maximum of 1000
instrument states can be saved.

Security Display blanking
Memory clearing functions
(see Application Note Security of Agilent Signal
Generators Issues and Solutions, literature
number 5989-1091EN)

Compatibility Agilent 83550 Series Millimeter Heads and OML
millimeter source modules.
Agilent 8757D scalar network analyzers.
Agilent EPM Series power meters.

Self-test Internal diagnostic routine tests most modules
(including microcircuits) in a preset condition.
For each module, if its node voltages are within
acceptable limits, then the module “passes”
the test.

Weight < 22 kg (48 lb.) net, < 30 kg (68 lb.) shipping
Dimensions 178 mm H x 426 mm W x 515 mm D

(7” H x 16.8” W x 20.3” D in.)
Recommended calibration cycle 24 months

1. Storage below –20 °C instrument states may be lost.

2. As is the case with all signal generation equipment, phase noise specifications are not warranted in a vibrating environment.

19

Input/Output Descriptions

Front panel connectors

(All connectors are BNC female
unless otherwise noted.)

1

Rear panel connectors

(all connectors are BNC female
unless otherwise noted.)

1

RF output Output impedance 50 Ω (nom)
Option 520 Precision APC-3.5 male, or Type-N with Option 1ED
Options 532, 540 and 550 Precision 2.4 mm male; plus 2.4 – 2.4 mm and

2.4 – 2.9 mm female adapters
Option 567 Precision 1.85 mm male; plus 1.85 – 1.85 mm and

2.4 – 2.9 mm female adapters
ALC input Used for negative external detector leveling. Nominal
input impedance 120 kΩ, damage level ±15 V.
LF output Outputs the internally generated LF source. Nominal
output impedance 50 Ω.
External input 1 Drives either AM, FM, or FM. Nominal input impedance
50 or 600 Ω, damage levels are 5 V
External input 2 Drives either AM, FM, or FM. Nominal input impedance
50 or 600 Ω, damage levels are 5 V
Pulse/trigger gate input Accepts input signal for external fast pulse modulation.
Also accepts external trigger pulse input for internal
pulse modulation. Nominal impedance 50 Ω. Damage
levels are 5 V
Pulse video out Outputs a signal that follows the RF output in all pulse
modes. TTL-level compatible, nominal source
impedance 50 Ω.
Pulse sync out Outputs a synchronizing pulse, nominally 50 ns width,
during internal and triggered pulse modulation.
TTL-level compatible, nominal source impedance 50 Ω.

Auxiliary interface (dual mode) Used for RS-232 serial communication and for
master/slave source synchronization.
(9-pin subminiature female connector).

GPIB Allows communication with compatible devices
LAN Allows 10BaseT LAN communication
10 MHz input Accepts an external reference (timebase) input (at 1,

2, 2.5, 5, 10 MHz for standard and 10 MHz only for
Option UNX and UNR)
Nominal input impedance 50 Ω
Damage levels > +10 dBm
10 MHz output Outputs internal or external reference signal. Nominal
output impedance 50 Ω. Nominal output power +8 dBm.
Sweep output (dual mode) Supplies a voltage proportional to the RF power or
frequency sweep ranging form 0 volts at the start of
sweep to +10 volts (nom) at the end of sweep,
regardless of sweep width.

and 10 V

rms

peak

and 10 V

rms

and 10 V

rms

.

peak

peak

.

.

During CW operation, supplies a voltage proportional
to the output frequency, +10 volts (nom) corresponding
to the maximum specified frequency.

When connected to an Agilent 8757D scalar network
analyzer (Option 007), generates a selectable number
of equally spaced 1 us pulses (nom) across a ramp
(analog) sweep. Number of pulses can be set form
101 to 1601 by remote control from the 8757D.

Output impedance: < 1 Ω (nom), can drive 2000 Ω.

1. Digital inputs and output are 3.3 V CMOS unless indicated otherwise. Inputs will accept 5 V CMOS, 3 V CMOS, or TTL voltage levels.

20

Stop sweep In/Out Open-collector, TTL-compatible input/output. In
ramp sweep operation, provides low level (nominally 0 V)
during sweep retrace and bandcross intervals, and
high level during the forward portion of the sweep.
Sweep will stop when grounded externally, sweep
will resume when allowed to go high.
Trigger output (dual mode) Outputs a T TL signal. High at start of dwell, or when
waiting for point trigger; low when dwell is over or
point trigger is received. In ramp sweep mode, pro­vides 1601 equally-spaced 1us pulses (nom) across a
ramp sweep. When using LF Out, provides 2 us pulse
at start of LF sweep.
Trigger input Accepts 3.3V CMOS signal for triggering point-to-
point in manual sweep mode, or to trigger start of
LF sweep. Damage levels ≥ +10 V or ≤ –4 V.
Source module interface Provides power and leveling connections to the
millimeter source modules.
Source settled Provides an output trigger that indicates when the
signal generator has settled to a new frequency or
power level. High indicates source not settled, Low
indicates source settled.
Z-axis Blank/Markers During ramp sweep, supplies +5 V (nom) level
during retrace and bandswitch intervals.
Supplies – 5 V (nom) level when the RF frequency
is at a marker frequency.
10 MHz EFC (Option UNR/UNX only) Accepts an external DC
voltage, ranging from –5 V to +5 V, for electronic
frequency control (EFC) of the internal 10 MHz
reference oscillator. This voltage inversely tunes the
oscillator about its center frequency approximately
– 0.07 ppm/ V. The nominal input impedance is
greater than 1 MΩ.
1 GHz Out (Option UNX only) Low noise 1 GHz reference output
signal, approximately +5 dBm (nom).

21

Options, Accessories,
and Related Products

Model/option Description
E8257D-520 Frequency range from 250 kHz to 20 GHz
E8257D-532 Frequency range from 250 kHz to 31.8 GHz
E8257D-540 Frequency range from 250 kHz to 40 GHz
E8257D-550 Frequency range from 250 kHz to 50 GHz
E8257D-567 Frequency range from 250 kHz to 67 GHz
E8257D-007 Analog ramp sweep
E8257D-UNX Ultra low phase noise
E8257D-UNT AM, FM, phase modulation, and LF output
E8257D-UNU Pulse modulation
E8257D-UNW

1

Narrow pulse modulation

E8257D-1EA High output power
E8257D-1E1 Step attenuator
E8257D-1ED Type-N (f) RF output connector (Option 520 only)
E8257D-1EH Improved harmonics below 2 GHz
E8257D-1EM Moves all front panel connectors to the rear panel
E8257D-1CN Front handle kit
E8257D-1CM Rackmount flange kit
E8257D-1CP Rackmount flange and front handle kit
E8257D-C09 Move all front panel connectors to the rear panel except for the RF

output connector

E8257D-HSM
E8257D-HAR

2

Scan modulation (20 GHz model only)

4

Optimize phase noise < 500 MHz carrier

E8257D-H1S 1 GHz external frequency reference input and output
E8257D-HCC Connections for phase coherency > 250 MHz
E8257D-H30

1

Internal mixer for up conversion capability in the 20, 31.8, and

40 GHz models

E8257D-H60

1

Internal mixer for up conversion capability in the 50 and 67 GHz models

E8257D-UK6 Commercial calibration certificate and test data
E8257D-CD1 CD-ROM containing the English documentation set
E8257D-ABA Printed copy of the English documentation set
E8257D-0BW Printed copy of the assembly-level service guide
8120-8806 Master/slave interface cable
9211-2656 Transit case
9211-7481 Transit case with wheels
E8257DS15
E8257DS12
E8257DS10
E8257DS08
E8257DS06
E8257DS05
E8257DS03

3

OML Inc. Millimeter source module, 50 GHz to 75 GHz at +8 dBm

3

OML Inc. Millimeter source module, 60 GHz to 90 GHz at +6 dBm

3

OML Inc. Millimeter source module, 75 GHz to 110 GHz at +5 dBm

3

OML Inc. Millimeter source module, 90 GHz to 140 GHz at –2 dBm

3

OML Inc. Millimeter source module, 110 GHz to 170 GHz at –6 dBm

3

OML Inc. Millimeter source module, 140 GHz to 220 GHz at –12 dBm

3

OML Inc. Millimeter source module, 220 GHz to 325 GHz at –25 dBm

22

1. Must be ordered with Option 1E1.

2. Must be ordered with Option UNT and not available with Option UNU.

3. Millimeter source module a product of Oleson Microwave Labs, Inc. and must be ordered with Option 1EA.

4. Must be ordered with Options UNX and 1EH.

Web Resources

Related Agilent

For additional information, visit:

www.agilent.com/find/psg

For more information about renting, leasing or financing Agilent’s latest technology, visit:

www.agilent.com/find/buy/alternatives

For more accessory information, visit:

www.agilent.com/find/accessories

For additional description of Agilent’s IO Libraries Suite features and installation
requirements, please go to:

www.agilent.com/find/iosuite/database

Literature

Agilent PSG Signal Generators
Brochure, Literature number 5989-1324EN

E8257D PSG Signal Generators
Configuration Guide, Literature number 5989-1325EN

E8267D PSG Vector Signal Generator
Data Sheet, Literature number 5989-0697EN

E8267D PSG Vector Signal Generator

Configuration Guide, Literature number 5989-1326EN

Millimeter Wave Source Modules from OML, Inc. for the Agilent PSG Signal Generators

Technical Overview, Literature number 5989-2923EN

Security of Agilent Signal Generators

Issues and Solutions, Literature number 5989-1091EN

23

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open connectivity for a broad range
of system-ready instruments, open
industry software, PC-standard I/O
and global support, which are
combined to more easily integrate
test system development.

Remove all doubt

Our repair and calibration services
will get your equipment back to you,
performing like new, when prom­ised. You will get full value out of
your Agilent equipment through­out its lifetime. Your equipment
will be serviced by Agilent-trained
technicians using the latest factory
calibration procedures, automated
repair diagnostics and genuine parts.
You will always have the utmost
confi dence in your measurements.

Agilent offers a wide range of ad­ditional expert test and measure­ment services for your equipment,
including initial start-up assistance
onsite education and training, as
well as design, system integration,
and project management.

For more information on repair and
calibration services, go to:

www.agilent.com/fi nd/removealldoubt

www.agilent.com

For more information on Agilent Technologies’
products, applications or services, please
contact your local Agilent office. The
complete list is available at:

www.agilent.com/fi nd/contactus

Americas

Canada [phone]
Latin America 305 269 7500
United States [phone]

Asia Pacifi c

Australia 1 800 629 485
China 800 810 0189
Hong Kong 800 938 693
India 1 800 112 929
Japan 0120 (421) 345
Korea 080 769 0800
Malaysia 1 800 888 848
Singapore 1 800 375 8100
Taiwan 0800 047 866
Thailand 1 800 226 008

Europe & Middle East

Austria 0820 87 44 11
Belgium 32 (0) 2 404 93 40
Denmark 45 70 13 15 15
Finland 358 (0) 10 855 2100
France 0825 010 700*

Germany 01805 24 6333**

**0.14 €/minute

Ireland 1890 924 204
Israel 972-3-9288-504/544
Italy 39 02 92 60 8484
Netherlands 31 (0) 20 547 2111
Spain 34 (91) 631 3300
Sweden 0200-88 22 55
Switzerland 0800 80 53 53
United Kingdom 44 (0) 118 9276201
Other European Countries:
www.agilent.com/fi nd/contactus

Revised: March 27, 2008

*0.125 €/minute

Product specifi cations and descriptions
in this document subject to change
without notice.

© Agilent Technologies, Inc. 2008
Printed in USA, June 23, 2008
5989-0698EN