RF Specifications
Noise Generator:
Noise Spectral Density: -80 dBm/Hz (min @ 0dB attenuation state for CNG-225 and CNG-70/140 models)
-85 dBm/Hz (min @ 0dB attenuation state for CNG-70/140-L model @ 70/140 MHz bands)
-98 dBm/Hz (min @ 0dB attenuation state for CNG-70/140-L model @ L-band)
-90 dBm/Hz (min @ 0dB attenuation state for all other models)
Noise Crest Factor:15 dB (min)
Noise Flatness: +0.8 dB/400 MHz
 
Signal Path:
Amplitude RangeSee Chart 1
Signal Input Impedance:50 ohm (OPT003 for 75 ohm)
Insertion Loss:model/option dependant
Input VSWR:1.5:1 (max)
Connector:Choose Type N, BNC or SMA Connector
Attenuator (optional)0 - 100 in 0.1 dB Steps
 
Combined Output Path
Modes of Operation:Eb/No, C/N, C/No
Eb/No* step size:0.1 dB
Eb/No Accuracy:0.15 dB RSS
Eb/No Ratio Range:Depends on input signal level, data rate
Eb/No Ratio Range limits:Dynamically displayed on screen/GPIB bus
Output Impedance:50 ohm (OPT003 for 75 ohm)
Connector:Type N, BNC or SMA
 
+ Flatness is defined as the overall window of the difference between the highest and lowest amplified peaks across the band.

* Eb/No encompasses C/N, C/No ratio modes.

General Specifications

Operation interfaces:Front Panel keypad, keyboard, IEEE-488 interface
DisplayActive Matrix Color LCD
19" Rack Mount:Included as standard
Computer Hardware:3.5" Floppy, PC keyboard
Software Upgrades:Via 3.5" floppy disk.
Dimensions:20" x 17" x 5.25" (3U rack)
Weight:18 kg (max)

Special Options
Special options are available to meet specific customer requirements.

1. Noise Filter Bank: this feature incorporates a switch filter bank in the noise (and sometimes the signal) path. Typically the filters have fairly high roll-off so the noise equivalent bandwidth can be accurately measured. In this mode, testing can be done with a known noise power in a known noise equivalent bandwidth. For this mode, the customer typically specifies 3 dB bandwidth, center frequency and filter type. For filter type, sometimes the construction such as 7-pole Tchebychev or 5-Pole Butterworth is specified. Other times a rejection spec is supplied. Still others actually supply the filters to Micronetics. Along with the filter bank, often times, one of the switch positions is to an external in/out connectors so an external filter can be used.

2. Special GUI: Some customers have special test routines often as a result of custom equipment which the Micronetics CNG is replacing. The extra cost of the software change is often well worth it if it negates having to update documented procedures, require external calculations and prevent human error.

3. Alternate Specifications. Sometimes special cases require more noise power, higher signal power dynamic range or other requirements. Micronetics can usually accommodate these simply by altering a component inside and/or altering the software.

Intro Page

The Micronetics Difference

The Micronetics Difference cont.

Ratio Modes

Standard Options

Specifications

Available Models

 
Back to Test Equipment Section

 

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