3
Specifi cations
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.
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 specifi cations 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
Displayed average noise level
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
Amplitude
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
Image rejection (image positioned
2x fIF above tuned response)
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
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.
1.
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