Page values for "494"

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"Specifications" values

17 rows are stored for this page
Parameter   Frequency Range
Value   
  • 10 kHz to 1.8 GHz
  • 1.7 GHz to 5.5 GHz
  • 3 GHz to 7.1 GHz
  • 5.4 GHz to 18 GHz
  • 15 GHz to 21 GHz
  • External Waveguide mixers: 18 GHz to 325 GHz
Parameter   Frequency Span Range (plus 0 Hz and MAX)
Value   

50 Hz/Div to 500 MHz/Div in 1, 2, 5 sequence

Parameter   Resolution Bandwidth Range (-6 dB bandwidth)
Value   

30 Hz, then 100 Hz to 1 MHz in decade steps

Parameter   RF Input impedance
Value   

50Ω

Parameter   Maximum Safe Input Power
Value   

CW: +30 dBm (1 W); Pulse: 75 W Pk (1 µS pulse, 0.1% duty factor)

Parameter   RF Attenuator Range
Value   

0 dB to 60 dB, 10 dB steps

Parameter   Reference Level Range
Value   

-117 dBm to +40 dBm

Parameter   Sweep Speed Range
Value   

10 sec/div to 20 µs/div in 1, 2, 5 sequence

Parameter   Video Bandwidth Filter
Value   
  • Normal
  • Wide 1/30 of resolution bandwidth
  • Narrow 1/300 of resolution bandwidth
Parameter   Triggering Modes
Value   

Free Run, Line, Video, Single, External

Parameter   Display Dynamic Range
Value   

80 dB

Parameter   Calibrator (Cal out)
Value   

50Ω, -20 dBm ±0.3 dB at 100 MHz

Parameter   Included Accessories
Value   

Operator’s Manual; Programmer Manual; 6-ft 50Ω coaxial cable N-N; 18-inch 50Ω coaxial cable BNC-BNC; N male to BNC female adapter; Diplexer Assembly; Power Cord; spare fuses; CRT filter set consisting of amber and gray light filters plus mesh filter

Parameter   Weight
Value   

24 kg (52 lbs) with standard accessories

Parameter   Power
Value   

90 − 132 VAC, 48 to 440 Hz; 180 – 250 VAC, 48 to 440 Hz. At 115 VAC, 60 Hz, 210 W max

Parameter   Operating Atmospherics
Value   

Temperatures: -15 °C to +55 °C; Humidity: Five cycles (120 hours) MIL-STD-810; Altitude: Up to 4.6 km (15,000 ft)

Parameter   GPIB Characteristics
Value   

In accordance with IEEE Standard 488-1978 implemented as SH1, AH1, T5, L3, SR1, RL1, PP1, DC1, DT1, and C0

"Products" values

1 row is stored for this page
Manufacturer   Tektronix
Model   494
Class   Spectrum Analyzer
Description   

21 GHz Spectrum Analyzer

Introduced   1985
Discontinued   1989