2784

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The Tektronix 2784 is a spectrum analyzer with a frequency range of 100 Hz to 40 GHz in coax and up to 325 GHz with external waveguide mixers. Minimum resolution bandwidth is 3 Hz, with a minimum span of 10 Hz. Non-volatile memory stores up to 20 separate waveforms with their readouts and markers.

Key Specifications

Frequency	100 kHz to 40 GHz (to 325 GHz with external waveguide mixers)
Center Frequency	100 Hz to 40 GHz (8 GHz to 1200 GHz with external waveguide mixer)
Resolution Bandwidth	6 dB bandwidths from 3 Hz to 10 MHz in 1, 3, 10 sequence
RF Input impedance	50 Ω
Maximum Safe Input Power	AC Average Power: +30 dBm continuous with ≥10 dB attenuation; Pulse Power: +47 dBm (50 W) peak, 1 µs and <0.005 duty factor with ≥50 dB attenuation; DC: 0 volts, <100 mA continuous with 0 dB attenuation
External Mixer Input	Impedance: 50 Ω with VSWR <1.9:1 at 525 MHz, and <2.2:1 at 3.525 GHz Amplitude: Approx -40 dBm for full screen signal, with -20 dBm Reference Level and 20 dB mixer conversion loss
RF Attenuator	0 dB to 70 dB, 10 dB steps
Frequency Span	Internal Coaxial Bands: 100 kHz to 40 GHz External Mixer Bands: 10 Hz to 600 Hz
Reference Level	–140 dBm to +30 dBm; range extends to +60 dBm in overdrive mode
Marker Frequency Counter Range	100 Hz to 1.2 THz
LO Output Power	≥15 dBm at 8.105 Ghz to 17.9 GHz
Sweep Speed Range	200 s to 2 µs in 1, 2, 5 sequence
Video Bandwidth Range	0.03 Hz to 300 kHz in 1, 3, 10 sequence, and 10 MHz, ±25%
Triggering	Internal: AC coupled; 10 Hz to 1 MHz; External: DC coupled; 0 Hz to 5 MHz, or 0 Hz to 1.5 kHz; Line: Copy of AC line
Displayed Average Noise	−85 dBm to −135 dBm; w/WM782 Waveguide Mixer Series: –75 dBm to –115 dBm
Phase Noise Performance	Low as –105 dBc/Hz at 10 kHz offset up to 21 GHz
Display Dynamic Range	100 dB
Weight	20 kg (44 lbs) with std accessories, cover, and no manuals
Power	90 − 132 VAC, 47 to 440 Hz, 180 – 250 VAC, 47 to 63 Hz. At 115 VAC, 60 Hz, 250 W max, 2.8 A. Standby power: 25 W max

Included Accessories

• N-male to BNC-female adapter; N to Planar Crown Adapter; 50 Ω SMA Cable; Line Fuses: 4 A, 125 VAC and 4 A, 250 VAC; Power Cord;
• Operator’s Manual; Operator’s Reference Guide; Programmer’s Manual; Programmer’s Reference Guide; Installation and Performance Verification Manual

Options

• Opt. 16: 49X/275X/279X Series GPIB Language
• Opt. 18: WM782 Bands Q, U, V, E, and W (freq coverage from 33-110 GHz)
• Opt. 19: WM782 Bands A, U, E, F, G, and J (freq coverage from 26-325 GHz)
• Opt. 20: Utility software for PC, includes GPIB card
• Opt. 30: Rackmount adapter (19 in.)
• Opt. B1: Service Manual prepared to module level
• Opt. B2: Complete set of manuals, including Service Manual

Connections
Front panel: RF INPUT 50 Ω, Planar Crown connector; EXTERNAL MIXER, 50 Ω SMA; LO OUTPUT, 50 Ω SMA (must be 50 Ω terminated); REF SIGNAL OUT, 50 Ω SMA (100 MHz –20dBm); ACCESSORY IN (serial data port); PROBE POWER.
Rear panel: FREQ REF (IN/OUT) 50 Ω BNC, 10 MHz ±5 Hz; TRIG/HORIZ IN, BNC; ACCESSORY, female DA-15 (External inputs and outputs); INSTRUMENT BUS, female DE-9; V OUT, 50 Ω BNC; H OUT, 50 Ω BNC; Z OUT 50 Ω BNC; IF OUT, 50 Ω BNC; PORT 1 and PORT 2 GPIB interfaces.

Pictures

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