Agilent 11974 Series
Preselected Millimeter Mixers
Data Sheet
Whether your millimeter-frequency application is component or system testing, signal surveillance or EMI
measurements, your software development and verification time will be reduced and your measurement times
will be decreased. Simply place a marker on a signal—all
responses are real—and perform a preselector peak. The
analyzer then displays the amplitude and frequency of
the signal. No time is lost creating and running signal
identification routines, which used to be required to
separate true responses from multiples and images.
Each 11974 series preselected millimeter mixer is characterized for conversion loss versus frequency.
Calibration accuracy ranges from 1 dB at 26.5 GHz to 2
dB at 75 GHz. Just enter the conversion loss data into
your host spectrum analyzer and then make amplitudecalibrated measurements.
Choose Your Host Spectrum Analyzer
Agilent 11974 series preselected millimeter mixers are
compatible with Agilent’s 8566B, 8560 series and
E4407B of rugged portables
1
, 70000 Series modular
spectrum analyzers and the E4440A/46A/48A PSA
Series
1
.
1. Requires Option AYZ (external mixing).
For the first time, preselected signal analysis is available
to 75 GHz. With preselection, you can quickly and easily
characterize all signals of interest. No images or multiples are displayed to confuse the measurement. Time
consuming signal-identification routines are eliminated.
Figure 1 shows how true signals can be obscured by displayed multiples and images in an unpreselected system. Figure 2 shows how only the true signals are displayed when an Agilent Technologies 11974 series preselected millimeter mixer is used in making the measurement.
RF Sections Available in Four Bands
from 26.5 to 75 GHz
Figure 1.
Figure 2.
2
Added Benefits of Preselected Millimeter
Measurements
Reduced Overload from Many Signals
Preselected millimeter mixers reduce susceptibility
to overloading by numerous signals. Overloading
can cause your measurements to be uncalibrated.
System Amplitude Accuracy
Millimeter preselection improves system amplitude
accuracy by reducing the level of local oscillator
(LO) emissions back to the device under test.
Option 001 further improves system amplitude
accuracy by adding an isolator in front of the input
filter. With Option 001, the RF input VSWR is
<1.6:1 in A, Q, and U bands and <2.3:1 in V Band.
System Configuration
To operate your 11974 series preselected millimeter mixer, simply connect the tune+span output,
local oscillator output,1and the IF input of the
spectrum analyzer to the mixer. Select the appropriate analyzer using the switch on the rear panel
of the mixer. Make two easy adjustments, and
you're ready to make millimeter measurements.
The 11974 series connect to a standalone power
supply with a convenient 6-foot cable. Use the
same power supply with any 11974 series preselected mixer.
A full set of upgrade kits is available to ensure
compatibility with your existing spectrum analyzers including Agilent 8560A, 8561A/B, 8562A/B,
8566A/B, and
E4440A/46A/48A PSA Series. Refer
to the compatibility table to determine whether
your spectrum analyzer requires an upgrade.
All versions of 8563A spectrum analyzers and
70907B external mixer interface modules are
fully compatible with the 11974 series.
Greater Dynamic Range
Preselection improves dynamic range when signals
are sufficiently spaced. The preselector allows only
one of these signals to reach the mixer at a time.
So internally produced distortion products, such
as third order intermodulation, are reduced.
Ease of Use
Operators no longer need to learn techniques of
signal identification. Anyone familiar with preselected microwave spectrum analyzers can quickly
and easily make millimeter measurements. Spurs
from a device under test are easily found. They
are not hidden by images or multiple responses.
1. Operation with 8566B spectrum analyzers requires the use of an 11975A LO amplifier
to provide sufficient local oscillator power to the 11974 series LO input.
11974A
11474Q
11974U
26.5 GHz 33 GHz
50 GHz40 GHz
11974V
60 GHz 75 GHz
3
Frequency
Frequency Range
(LO Harmonic Number)
11974A (n = 8) 26.5 GHz to 40 GHz
11974Q (n = 10) 33 GHz to 50 GHz
11974U (n = 10) 40 GHz to 60 GHz
11974V (n = 14) 50 GHz to 75 GHz
Preselector Bandwidth (3 dB points)
Minimum Typical
11974A 80 MHz 130 MHz
11974Q 100 MHz 150 MHz
11974U 100 MHz 150 MHz
11974V 100 MHz 200 MHz
Center Frequency Accuracy, Residual FM, Span Accuracy
Using specifications of the spectrum analyzer, evaluate characteristics
with reference to the harmonic numbers listed below.
Harmonic Number
11974A n = 8
11974Q n = 10
11974U n = 10
11974V n = 14
Amplitude
Displayed Average Noise Level
Spectrum Analyzers: 8566B, 71OOOC, PSA Series (RBW=10 Hz)
Maximum Typical
11974A -111 dBm -118 dBm
11974Q -106 dBm -116 dBm
11974U -109 dBm -117 dBm
11974V -100 dBm -109 dBm
Spectrum Analyzers: 8563A/62A/61B/60A (RBW=300 Hz)
1
Maximum Typical
11974A -96 dBm -103 dBm
11974Q -91 dBm -101 dBm
11974U -94 dBm -104 dBm
11974V -85 dBm -94 dBm
Maximum Conversion Loss
RF to IF port (includes 1-m IF cable, part number 5061-5458)
11974A 44 dB
11974Q 46 dB
11974U 43 dB
11974V 57 dB
Conversion Loss Chart Accuracy
20 °C to 30 °C: RSS of calibration equipment errors (Add 0.7 dB if used
with 8563A/62A/61B/60A.)
0 °C to 55 °C: RSS of calibration equipment errors plus worst-case temperature effects of 11974 (Add 0.7 dB if used with 8563A/62A/61B/60A.)
0 °C to 55 °C 20 °C to 30 °C
11974A ≤ ±2.3 dB ≤ ±1.0 dB
11974Q ≤ ±2.3 dB ≤ +1.0 dB
11974U ≤ ±2.6 dB ≤ +1.1 dB
11974V ≤ ±4.5 dB ≤ ±2.0 dB
Image Rejection
(Image positioned 2x fIF above tuned response)
Spectrum Analyzers: 8566B, 71000C, PSA Series
O°C to 55°C 20°C to 30°C
11974A ≤ -54 dBc ≤ -59 dBc
11974Q ≤ -50 dBc ≤ -55 dBc
11974U ≤ -50 dBc ≤ -55 dBc
11974V (50 to 67 GHz) ≤ -50 dBc ≤ -55 dBc
11974V (67 to 75 GHz) ≤ -40 dBc ≤ -45 dBc
Spectrum Analyzers: 8563A/62A/61B/60A
O °C to 55 °C 20 °C to 30 °C
11974A ≤ -50 dBc ≤ -55 dBc
11974Q ≤ -45 dBc ≤ -50 dBc
11974U ≤ -45 dBc ≤ -50 dBc
11974V (50 to 67 GHz) ≤ -45 dBc ≤ -50 dBc
11974V (67 to 75 GHz) ≤ -35 dBc ≤ -40 dBc
Multiple Response
(Due to in-range applied signals mixing with LO harmonics other than
order n)
11974A (n = 8) ≤ -63 dBc
11974Q (n = 10) ≤ -60 dBc
11974U (n = 10) ≤ -60 dBc
11974V (n = 14)
(applied signal: 50 to 67 GHz) ≤ -60 dBc
(applied signal: 67 to 75 GHz) ≤ -55 dBc
1 dB Gain Compression (Nominal)
11974A ≥ +6 dBm
11974Q ≥ 0 dBm
11974U ≥ 0 dBm
11974V ≥ +3 dBm
1. The minimum usable resolution bandwidth of the 8563A/61B/60A in external
mixing mode is 300 Hz. The 8562A can be used with its minimum resolution band
width of 100 Hz in external mixing mode.
Specifications
Unless noted, all specifications describe warranted performance under the following conditions: 5-minute
warm-up from ambient conditions; 1-year calibration cycle; environmental requirements met; IF and LO
connections between the Agilent 11974 and a compatible spectrum analyzer are made with one length of
coax cable (part number 5061-5458). Typical performance is non-warranted. Supplemental characteristics
are denoted by "nominal"; these constitute non-warranted functional performance information derived during the design process and are not tested on a continuing basis.
4
Amplitude (Continued)
Third-Order Intercept (Nominal)
(For two signals spaced less than 200 MHz apart)
11974A ≥ +13 dBm
119740 ≥ +13 dBm
11974U ≥ +13 dBm
11974V ≥ +13 dBm
IF Subharmonic Response (Nominal)
Intercept (2nd Order; response at fIF/2 above input signal)
fIF/2 = 160.7 MHz (8566B/71000C)
fIF/2 = 155.35 MHz (8563A/62A/61B/60A)
11974A ≥ +45 dBm
11974Q ≥ +45 dBm
11974U ≥ +45 dBm
11974V ≥ +30 dBm
Dynamic Range
Refer to Figure 3
Inputs and Outputs (all values are nominal)
RF Input
Waveguide Size, Flange Type
Size Flange
11974A WR-28 UG 599/U
11974Q WR-22 UG 383/U
11974U WR-19 UG 383/U-M
11974V WR-15 UG 385/U
Maximum RF Input Level +25 dBm
(CW, Peak, or Average)
VSWR (at peak of preselector filter) < 3.0:1
LO Input
Connector Type SMA (f)
Frequency Range
11974A 3.3 GHz to 5 GHz
11974Q 3.3 GHz to 5 GHz
11974U 4 GHz to 6 GHz
11974V 3.5 GHz to 5.3 GHz
Maximum LO Input Level +14.5 dBm to 16 dBm
VSWR < 2.0:1 (50 W)
IF Output
Connector Type SMA (f)
Match < 1.6:1 (50 W)
Tune + Span Input
Connector Type BNC (f)
Options
Option 001: Input isolator attached and included in calibration. An input
isolator provides a specified broadband RF input match. This is important
when the device under test requires protection from out-of-band reflections off the 11974's input tracking filter. With Option 001, the 11974 conversion loss is calibrated with the input isolator in place so that system
amplitude accuracy is maintained.
Specifications Changes for Option 001:
Amplitude
Displayed Average Noise Level and Maximum Conversion Loss: Add +2 dB
to the standard specifications for A, Q, and U bands; add +3 dB for V band.
RF Input VSWR (across full waveguide band)
11974A, Q, U < 1.6:1
11974V < 2.3:1
Figure 3. Agilent 11974A System Dynamic Range
Displayed average
noise floor
Second order IF
subharmonic distortion
Image & multiple response
Third order intermod
(≤ 200 MHz signal separation)
-20
-30
RBW = 300 Hz
-40
RB
W
=
-50
-60
10 H
z
-70
-80
-90
Typical spur or noise level (dBc)
-100
-110
-120
-130
-70
-60
-50
-40
-30
-20
-10 0 +10 +20
RF input (dBm)
5
General Specifications
Environmental specifications type tested to MIL-T-28800C, Class 5 environmental conditions as listed below:
Temperature
Non-operating -40 °C to +75 °C
Operating 0 °C to +55 °C
Relative Humidity 95% ± 5% up to +40 °C
Altitude
Non-operating < 12,195 m (< 40,000 feet)
Operating < 3,048 m (< 10,000 feet)
Maximum Vibration Level
5 Hz to 55 Hz 2 g
Maximum Shock 30 g
Electromagnetic Meets radiated and
Compatibility conducted emissions of
MIL-STD-461B, Part 7,
methods CE03 (Air Force)
and RE02, FTZ 526/527/79
Power Requirements: 11974-60028 power supply
(Nominal)
Output +50 V, 0.6 A dc
±15 V, 0.2 A dc
Input 100/110/220/240 V ac
47 Hz to 63 Hz
Power Consumption 130 VA maximum
Max. Power Dissipation
11974 Series 35 W
11974-60028 25 W
Weight (Nominal)
11974 Series 6.5 kg (14.3 lb)
11974-60028
Preselector Power Supply 11.9 kg (26.21 lb)
Dimensions (Nominal)
11974 Series 210.2 mm (8.3") x 84.7 mm
(3.3") x 101.5 mm (4.0")
11974-60028 346.1 mm (13.6") x 212.7 mm
Preselector Power Supply (8.4") x 133.4 mm (5.25")
Accessories Supplied
The following is a list of all accessories and their part numbers supplied
at shipment:
Accessory Description Part Number
Power Supply 11974-60028
Ball Driver, 3/32 inch 8710-1539
Wrench, 5/16 inch 8710-0510
Alignment Tool 8710-0630
Four Standard #4-40 Screws for A Band 3030-0221
Captive Screws for Q, U, and V Bands, 4 each 1390-0671
3 Cables with SMA (m) Connectors (1 m) 5061-5458
1 Cable with BNC (m) Connectors (48 inches) 8120-1839
1 Cable with BNC (m) Connectors (24 inches) 8120-2582
1 Adapter with BNC (f) Connectors 1250-0080
1 Stand for the 11974 83556-60010
Compatibility Information
The following table lists compatibility requirements of host spectrum analyzers. Installation by
a service center is recommended for the Agilent
8561A, 8562A, and 8566B upgrade kits. All other
kits may be installed by the customer. Approximate installation times are one hour for the
70907A-K74 kit and three to four hours for all
other kits.
70000 Modular Measurement System with
70907 External Mixer Interface Module
Model S/N Prefix Compatibility Kit
70907A all 70907A-K74 upgrade kit required
1
70907B all Fully compatible provided 70900A/B
LO meets the following requirements:
Firmware Date Code LO Upgrade Kit
YYMMDD required
850730 70907B-098
860203 (Firmware + CPU)
861015 70907B-099
870501 (Firmware only)
880314
880901
890606 Fully compatible
Rugged Portable Spectrum Analyzers
Model S/N Prefix Compatibility Kit
8560A < 3003A 8560A-K74 upgrade kit required
2
8560A ≥ 3003A Fully compatible
2
8561 A all 8561A-K74 upgrade kit required
3
8561 B < 3003A 8561 B-K74 upgrade kit required
8561B ≥ 3003A Fully compatible
8562A/B all 8562A-K74 upgrade kit required
3
8560E/EC all Fully compatible
8561E/EC all Fully compatible
8562E/EC all Fully compatible
8563A/E/EC all Fully compatible
E4407B
5
all Fully compatible
PSA Series with Option AYZ
Model S/N Prefix Compatibility Kit
E4440A/46A/48A all Fully compatible
8566A/B with 11975A LO Amplifier
Model S/N Prefix Compatibility Kit
8566A < 2007A
4
No upgrade kit available
8566A ≥ 2007A
4
8566AB conversion kit
previously installed:
Firmware Datecode < 89.10.10
8566B-K74 upgrade kit required
Firmware Datecode ≥ 89.10.10
8566B-K75 upgrade kit required
8566AB conversion kit NOT
previously installed:
(two kits required)
8566AB conversion kit,
8566B-K75 upgrade kit
8566B < 2948
4
8566B-K74 upgrade kit required
8566B ≥ 2948
4
Fully compatible
Ordering Information
11974A 26.5 to 40 GHz
11974Q 33 to 50 GHz
11974U 40 to 60 GHz
11974V 50 to 75 GHz
Option 11974X-001: Input isolator attached and
included in calibration (Note: X = A, Q, U or V)
Option 11974X-003: Exclusion of power supply
(Note: X = A, Q, U or V)
5062-3989: Front handle kit for power supply
5062-3957: Rack mount kit with extended flange
for power supply (half-width)
Warranty and service
Standard warranty is 12 months.
Option R-51B: Return-to-Agilent warranty and
service
Calibration
R-50C-001: Standard calibration
R-50C-002: Standard compliant calibration
6
1. Mixer bias capability is converted to preselector peak, resulting in activation of a
preselector peaking with the BIAS PEAK function. Sweep times must be manually
controlled in wide spans to avoid oversweeping the preselector.
2. External mixing is not available with the 8560EC if a built-in tracking generator,
Option 8560EC-002, has been installed.
3. Operation with 11974 series will require entry of a frequency offset. Preselector peaking is performed manually with a screwdriver adjustment. Sweep times
must be manually controlled in wide spans to avoid oversweeping the preselector.
4. The serial number prefix on the 8566A/B refers to the RF section.
5. Requires Option AYZ (external mixing).
7
Compatible spectrum analyzers
E4440A 3 Hz to 6.7 GHz high-performance
E4446A 3 Hz to 44 GHz high-performance
E4448A 3 Hz to 50 GHz high-performance
8560EC 2.9 GHz rugged portable
8561EC 6.5 GHz rugged portable
8562EC 13.2 GHz rugged portable
8563EC 26.5 GHz rugged portable
8564EC 40 GHz rugged portable
8565EC 50 GHz rugged portable
E4407B 26.5 GHZ rugged portable
71100C 2.9 GHz modular
71200C 22/26.5 GHz modular
71210C 22 GHz modular
70907B external mixer interface module
8566B 22 GHz benchtop
11975A LO amplifier
Note: An 8562A can be made hardware compatible
with the 11974 series by installing the 8562A-K74
upgrade kit. Limitations of using an 8562A with
the 11974 series are indicated in footnote 1 below.
Other related accessories available from
Agilent Technologies:
281 A/B Waveguide with
2.4-mm coax adapters
382A Attenuators for R, Q,
and U bands only
373D/G 20/50 dB fixed attenuators
370A/B/C 3 dB, 6 dB, and 10 dB fixed
attenuators for Q and U bands only
800 series Waveguide bends, twists,
and straight sections
365A series Waveguide isolators for R, Q, U,
and V bands
1. Operation with 11974 series will require entry of a frequency offset. Preselector peaking is performed manually with a screwdriver adjustment. Sweep times
must be manually controlled in wide spans to avoid oversweeping the preselector.
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