Cushman 6020A/10 Radio System Analyzer / Communications Service Monitor
Comes with a maintenance manual and what you see in the pictures. If you don't see it, you probably wont get it.
Specifications are from Cushman for a 6020 and may vary slightly due to upgrades, options, or revisions this unit may or may not have.
The unit has option 10 which wasn't listed in the manual. It is sold completely functional with 30-day warranty. Brand new batteries installed.
The Cushman CE-6000 Series Radio System Analyzer is a portable test instrument designed to aid in repairing two-way radios operating in the VHF/UHF range to 1000 MHz. There are four basic versions of the CE-6000 Radio System Analyzer. They are the CE-6020, CE-6030, CE-6232, and CE-6488. Each version has the following capabilities:
* Combines in one instrument the functions of a spectrum analyzer, RF signal generator, frequency meter, audio generator and modulator, RF power meter, frequency comparator, oscilloscope, % AM modulation meter, FM modulation deviation meter, and SINAD receiver sensitivity meter.
* Provides a portable test instrument which can monitor and test the frequency characteristics of transceivers in the VHF/UHF range to 1000 MHz.
The CE-6020 Radio System Analyzer includes the basic instrument capability plus OP-04 Tracking Generator (TG) option, and the Cable Fault Location function.
Functions: Frequency error, FM deviation, % AM, RF Power, SINAD, audio frequency (Lissajou), SSB (receive)
Range: 0.45 to 999.9999 MHz (useable to 50 kHz)
Accuracy: +/- 1 x 10-7 +/- (time base stability)
Inputs: 2 BNC connectors: high sensitivity (2 uV) antenna input, and a high power input/output for direct connection of transceivers of up to 150 W transmitter power.
Sensitivity (Narrow Selectivity):
FM: 2 uV (0.6 uV typical) for 10dB SINAD; Frequency > or = to 2.0 MHz
AM: 2 uV typical for 10 dB SINAD; Frequency > or = to 10.0 MHz
Selects IF & audio 3 dB bandwidths:
Concentric controls adjust squelch and receiver sensitivity
Zero centered meter reads error offset from display frequency.
Ranges: +/- 1.5, +/- 5 and +/- 15 kHz
FM peak deviation read simultaneously on meter and CRT display.
Ranges (meter and CRT): 1.5, 5, and 15 kHz peak
Accuracy: +/- 5% of full scale on meter
% AM modulation read simultaneously on CRT display and calibrated meter
CRT Range: +/- 15%, +/- 50% and +/- 150%
Accuracy: +/- 5% of meter scale
Range: 1 W to 15 W; 10 W to 150 W
Accuracy: +/- 10% full scale from 1-500 MHz; +/- 20% full scale from 500-1000 MHz
Accuracy: 10, 12 & 20 dB SINAD +/- 1.5 dB
Connects MOD OUT to horizontal input of scope for frequency measurement of audio tones using Lissajou method
< or = 100 Hz; fc > or = 10 MHz; 20 uV input, narrow selectivity
Level: 2 Volt peak-to-peak for 15 kHz FM deviation, typical
Audio Synthesizer Specifications:
MOD: 0.1 Hz to 19,999.9 Hz, with resolution of 0.1 Hz
MOD + 1 kHz: Simultaneous 1 kHz tone + GEN frequency
0-2 volt peak-to-peak into 1 K ohm typical. Separately adjustable controls for GEN frequency and 1 kHz tone.
Tracking Generator Specifications:
Swept frequency output is exactly equal to input frequency of spectrum monitor
Frequency Range: 10 MHz to 999.9999 MHz (useable from 450 kHz)
Fixed: 100 kHz, 1 MHz, 100 MHz
Output Level: 0.1 uV to 300 mV, continuous
BNC Connector at SIG GEN OUT. Controlled by ON/OFF position on SIG GEN (FINE) attenuator control.
Internal Leakage: 60 dB typical below 0 dB ref. on Spectrum Monitor (CRT) display and SIG GEN (FINE) with fine attenuator below -10 dB level
Display Modes: Spectrum Monitor; External detector; and oscilloscope
Display Range: 60 dB typical on Spectrum Monitor with SIG GEN (FINE) attenuator control below -10 dB level.
>10 MHz: > or = to 100 dB, typical
455 kHz to 10 MHz: > or = to 70 dB, typical
Spectrum Monitor Specifications:
Frequency Range: 10 to 1000 MHz (useable to 100 kHz)
RF Attenuator: > or = to 40 dB in 20 dB steps
Display Range: 70 dB (10 dB/div.) and 8 dB (1 dB/div.)
Vertical Offset Range: > 20 dB (1 dB/div. only)
+/- 1.5 dB from 0 to -60 dB (10 dB/div.)
+/- .25 dB from 0 to 8 dB (1 dB/div.)
Absolute Level Accuracy: +/- 4.5 dB (S/N > or = to 20 dB)
Fixed: 10, 100 kHz/div., 1, 10, MHz/div., 0-1000 MHz
Variable: 10 to > 350 MHz (for cable fault)
Minimum Resolution: 3 kHz for 2 equal signal levels
Frequency Range: DC to 500 kHz, 3 dB bandwidth (usable to 1.0 MHz)
CRT Scale: 8 divisions high x 10 divisions wide
Vertical Sensitivity (Calibrated): 5 mV/div., 50 mV/div., 0.5 V/div., 5 V/div., +/- 5% - Continuously adjustable between ranges
Horizontal Sweep Rate (Calibrated): 10 msec./div., 1 msec./div. 100 usec./div., 10 usec./div., +/- 5% - Continuously adjustable between ranges
External Inputs: Vertical and Horizontal inputs (horizontal through MOD IN port)
Vertical Input Impedance: 1 M ohm +/- 5% in parallel with 30 pF
Signal Generator Specifications:
Frequency Range: 0.45 to 999.9999 MHz (useable to 10 kHz)
Accuracy: FM, AM, CM: +/-1 x 10-7 +/- (time base stability)
Variable Frequency Offset: +/- 15 kHz about dialed-in frequency with single knob control (push to activate)
Range: 0.1 uV to 300 mV rms, continuous
Accuracy: +/- 3 dB overall; +/- 2 dB typical for levels between 0.7 uV to 100 mV
Frequency, accuracy: Refer to audio synthesizer specifications
Deviation: 1.5, 5, and 15 kHz peak deviation
Full scale ranges on meter and CRT
Sine Wave: 30 Hz to 10 kHz, 15 kHz max. deviation
Square Wave: 5 Hz to 300 Hz, 3 kHz max. deviation
Frequency, accuracy: Refer to audio synthesizer specifications
Range: 0 to 100% full scale range on meter +/- 15, +/- 50, and +/- 150% full scale ranges on CRT
AM External Frequency: 30 Hz to 10 kHz
Harmonics (freq. > or = to 1 MHz): > 30 dBc, (60 dB typical)
Non-harmonics: > 35 dBc (60 dB typically)
Power Sources: 115/230 VAC (+/- 10%), 50-400 Hz, 85 watts
Frequency Stability, Time Base:
TCXO: 1 x 10-6 per year after 30 seconds; +/- 3 x 10-7 per month after 30 days.
Frequency Selection: Microprocessor based, keyboard entry (with LCD display), 69 memory locations for RF and analog tone frequencies.
Automatic Overload Protection: SIG GEN OUT/RF IN port automatically protected in SIG GEN mode against accidental transmitter keying for 150 watts maximum power for 5 minutes. High power protection is still active when instrument power is OFF.
Temperature Operating Range: 0°C to +55°C (32°F to 131°F)