Specification—492/492P Service Vol. I (SN B030000 & up)
Table 1-1 (cont)
Characteristic
Performance Requirement
Supplemental Information
Sensitivity
The following tabulation shows the equivalent maximum input noise for each resolution bandwidth, with the internal
mixer for frequency bands 1—5 (100 kHz—18 GHz), and TEKTRONIX High Performance Waveguide Mixers for bands
6—10 (18 GHz—140 GHz). The NARROW video filter is activated, for narrow resolutions (1 kHz or less); WIDE filter for wide
resolution.
SENSITIVITY (VERSUS BANDWIDTH)
Frequency/Band
Equivalent Input Noise for Resolution Bandwidths
1 kHz 10 kHz
100 kHz 1 MHz
50 kHz—7.1 GHz (Bands 1—3)
— 115 dBm
-105 dBm
— 95 dBm
— 85 dBm
5.4-18.0 GHz (Band 4)
-100 dBm — 90 dBm
—80 dBm
— 70 dBm
15—21.0 GHz (Band 5)
-9 5 dBm
-8 5 dBm
-7 5 dBm -6 5 dBm
18.0—26 GHz (Band 6 )a
-100 dBm -9 0 dBm
-8 0 dBm -7 0 dBm
26—40.0 GHz (Band I f
—95 dBm
—85 dBm -7 5 dBm —65 dBm
40.0—60.0 GHz (Band 8 )a
-9 5 dBm —85 dBm -75 dBm
—65 dBm
60.0—90.0 GHz (Band 9)
Typically —95 dBm for 1 kHz bandwidth at 60 GHz degrading to —85 dBm at 90 GHz
90.0—150.0 GHz (Band 10)
Typically —85 dBm for 1 kHz bandwidth at 90 GHz degrading to —75 dBm at 140 GHz
140.0—220 GHz (Band 11)
External Mixer Dependent
Spurious Response
Residual (no input signal,
referenced to mixer input,
and fundamental mixing for
bands 1, 2, and 3)
— 100 dBm or less
Third order intermodulation
products (MIN DISTORTION
mode)
At least — 70 dBc below any two on
screen signals within any frequency
span
Harmonic Distortion (cw
signal, MIN DISTORTION
mode)
At least —60 dBc for full screen signal
LO Emissions (referenced to
input mixer)
— 10 dBm or less
‘ TEKTRONIX High Performance Waveguide Mixers.
REVJUN 1982
1-9
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