Specification—492/492P Service Vol. I (SN B030000 & up)
Table 1-4
OPTION 01 ELECTRICAL CHARACTERISTICS
Characteristic Performance Requirement
Supplemental Information
Spurious Responses
Intermodulation Products
1.8—18 GHz
At least -7 0 dBc from any two on-screen
signals within any frequency span.
s* -100 dBc when signals are separated
100 MHz or more.
1.7—1.8 GHz At least —70 dBc from any two —40 dBm
signals within any frequency span.
Harmonic Distortion
(cw signal 1.7—18 GHz)
— 100 dBc or more for full screen signal
(MIN DISTORTION mode).
LO emission, referenced to
input mixer and with zero
RF attenuation
Less than -7 0 dBm to 18 GHz.
Input Level
Maximum Safe Input
1 watt or +30 dBm.
1 dB Compression Point
(minimum):
1.7—2.0 GHz
Otherwise
-2 8 dBm
— 18 dBm
With no RF attenuation.
With no RF attenuation.
Frequency Response and
Display Flatness3
Coaxial (direct) Input
Band 1
100 kHz—1.8 GHz
About mean
average
Referenced
to 100 MHz
Frequency response is measured with
RF attenuation >10 dB and PEAKING
optimized for each center frequency
setting, when applicable. Response
includes the effects of input vswr,
mixing mode (n), gain variation,
preselector, and mixer. Display
flatness is typically 1 dB greater
than the frequency response.
±1.5 dB
50—1.8 GHz ±2.5 dB
Band 2
1.7—5.5 GHz ±2.5 dB ±3.5 dB
Band 3
3.0—7.1 GHz
±2.5 dB
±3.5 dB
Band 4
5.4—18.0 GHz ±3.5 dB
±4.5 dB
Band 5
15.0—21.0 GHz
±5.0 dB
'Refer to “ Verification of Tolerance Values” at the beginning of the Performance Check section.
REV JUN 1982
1-15
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