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.
Amplitude
Displayed average noise level
Spectrum analyzers: 8566B, 71OOOC,
PSA Series (RBW = 10 Hz)
Maximum Typical
11974A
11974Q
11974U
11974V
–111 dBm
–106 dBm
–109 dBm
–100 dBm
–118 dBm
–116 dBm
–117 dBm
–109 dBm
Amplitude
Image rejection (image positioned
2x fIF above tuned response)
Spectrum analyzers: 8566B, 71000C,
PSA Series
O °C to
55 °C
11974A
11974Q
11974U
≤ –54 dBc
≤ –50 dBc
≤ –50 dBc
20 °C to
30 °C
≤ –59 dBc
≤ –55 dBc
≤ –55 dBc
≤ –55 dBc
≤ –45 dBc
Displayed average noise level
Spectrum analyzers: 8563A/62A/61B/
60A (RBW = 300 Hz)
1
Maximum Typical
11974A
11974Q
11974U
11974V
–96 dBm
–91 dBm
–94 dBm
–85 dBm
–103 dBm
–101 dBm
–104 dBm
–94 dBm
11974V
≤ –50 dBc
(50 to 67 GHz)
11974V
≤ –40 dBc
(67 to 75 GHz)
Image rejection (image positioned
2x fIF above tuned response)
Spectrum analyzers: 8563A/62A/61B/
60A
O °C to
55 °C
11974A
11974Q
11974U
≤ –50 dBc
≤ –45 dBc
≤ –45 dBc
Frequency
Frequency range
(LO harmonic number)
11974A (n = 8)
11974Q (n = 10)
11974U (n = 10)
11974V (n = 14)
26.5 GHz to 40 GHz
33 GHz to 50 GHz
40 GHz to 60 GHz
50 GHz to 75 GHz
Maximum conversion loss
RF to IF port (includes 1-m IF cable,
part number 5061-5458)
11974A
11974Q
11974U
11974V
44 dB
46 dB
43 dB
57 dB
20 °C to
30 °C
≤ –55 dBc
≤ –50 dBc
≤ –50 dBc
≤ –50 dBc
≤ –40 dBc
11974V
≤ –45 dBc
(50 to 67 GHz)
11974V
≤ –35 dBc
(67 to 75 GHz)
Preselector bandwidth
(3 dB points)
Minimum
11974A
11974Q
11974U
11974V
80 MHz
100 MHz
100 MHz
100 MHz
Typical
130 MHz
150 MHz
150 MHz
200 MHz
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
11974A
11974Q
11974U
11974V
≤ ±2.3 dB
≤ ±2.3 dB
≤ ±2.6 dB
≤ ±4.5 dB
Multiple response
(Due to in-range applied signals mixing
with LO harmonics other than order n)
11974A (n = 8)
11974Q (n = 10)
11974U (n = 10)
11974V (n = 14)
(applied signal:
50 to 67 GHz)
(applied signal:
67 to 75 GHz)
≤ –60 dBc
≤ –55 dBc
≤ –63 dBc
≤ –60 dBc
≤ –60 dBc
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
11974Q
11974U
11974V
n=8
n = 10
n = 10
n = 14
20 °C to
30 °C
≤ ±1.0 dB
≤ +1.0 dB
≤ +1.1 dB
≤ ±2.0 dB
1 dB gain compression
(nominal)
11974A
11974Q
11974U
11974V
≥ +6 dBm
≥ 0 dBm
≥ 0 dBm
≥ +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.
3
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