Aeroflex 2945B User Manual Page 7

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Dynamic Range
0 to -60 dBc
TRANSIENT POWER ANALYSIS
Displays power profile against time
Frequency Range
1 to 1050 MHz
Dynamic Range
60 dB below spectrum analyzer reference level
Scale (power)
10 dB/div
Scale (time)
50 μs/division to 5 s/div
Trigger Level
Adjustable over full dynamic range +ve or -ve trigger selection
Pre-trigger
0, 25, 50, 75 or 100% of displayed period
MODULATION METER
Sensitivity
Auto-tuned: 5 mW (N-Type)
0.05 mW (Antenna port)
Manual Tuned: -34 dBm (N-Type)
-60 dBm (Antenna port)
Auto or manual control of input attenuator
Audio & Modulation Filters
Lowpass filters
Four independently configurable Lowpass filters LP1, LP2, LP3, LP4
that can be set to any frequency cut off point from 250 Hz to
20000 Hz (excluding the band 1001 Hz to 2999 Hz)
A 50 kHz Lowpass (No filters applied)
750 μs de-emphasis
Highpass filters
50 Hz Highpass, 300 Hz Highpass
Bandpass filters
Any combination of LP1, LP2, LP3, LP4 and the Highpass filters
AMPLITUDE MODULATION
Frequency Range
100 kHz to 1.05 GHz
Modulation Frequency Range
10 Hz to 15 kHz
AM Depth Range
0 to 99% (manually tuned)
0 to 90% below 100 MHz
0 to 80% from 100 to 400 MHz
Peak hold facility
Resolution
1% AM
Indication
2 digits and bar chart
Accuracy
(1)
±5% ±1 digit at 1 kHz
±8.5% ±1 digit from 50 Hz to 10 kHz
Demodulation Distortion
(1)
Less than 2%, at 1 kHz and 30% AM, (CCITT weighted)
Residual AM
Less than 1% (300 Hz to 3.4 kHz)
FREQUENCY MODULATION
Frequency Range
100 kHz to 1.05 GHz
Modulation Frequency Range
10 Hz to 15 kHz
Deviation Range
0 to 75 kHz
Peak hold facility
Resolution
10 Hz below 2 kHz deviation, 1% above 2 kHz deviation
Indication
3 digits and bar chart
Accuracy
(1)
±5% ±1 digit at 1 kHz modulation frequency
±7.5% ±1 digit for modulation frequencies 50 Hz to 10 kHz
Demodulation Distortion
Less than 2% at 1 kHz and 5 kHz FM, (CCITT weighted)
Residual FM
Less than 30 Hz (300 Hz to 3.4 kHz)
Demodulation Output Socket
200 mV peak to peak ±10% per 1 kHz deviation
RF SPECTRUM ANALYZER
Frequency Range
100 kHz to 1.0 GHz
Spans
1 kHz/division to 100 MHz/division in a 1, 2, 5 sequence or continu-
ously variable
Start - stop facility allows selection of infinitely variable span width
Resolution Bandwidth
300 Hz, 3, 30, 300 kHz, 3 MHz
Reference Level (top of screen)
-50 dBm to +52 dBm
0.7 mV to 71 V
Displayed Dynamic Range
80 dB
Noise Floor
Typically 75 dB below top of screen
On Screen Linearity
Typically ±2 dB ±1 resolution (10 dB/div) >10 dB above noise floor
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