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The Wavetek hand-held SAM 4040 performs essential cable TV system preventive
maintenance tests with accuracy and ease. Signal levels, hum, C/N, and frequency
response can be quickly tested.
The SAM 4040, conducts a battery of signal level measurements, including a
full scan of the cable spectrum to 1 GHz. A proprietary digital signal
processing (DSP) technique is used to measure hum and carrier to noise on
modulated carriers.
It is a full-featured signal analysis meter, with a complete spectrum display
and analog representation of single channel measurement data. When tuned to a
specific channel, a comprehensive set of information is provided: tuned channel,
video frequency and level, audio frequency and level, the difference between
video and audio carrier levels.
The SAM 4040 is a streamlined, hand-held instrument, that weighs less than
five pounds. Its 320 X 240 dot matrix LCD shows measurement data in both
graphical and numerical form.
SPECIFICATIONS
Frequency
Range: 5 to 1,000 MHz
Accuracy: + 10 ppm at 25°C; + 10 ppm drift over temp.; + 3 ppm/year aging
Resolution Bandwidth: 280 kHz
Tuning Resolution: 10 kHz
Sweep Resolution 250 kHz maximum
Level Measurement
Range: -40 to +60 dBmV
Resolution: 0.1 dB
Accuracy: + 1.0 dB from -20 to + 50°C (typical specifications), (relative to
25°C)
Hum Measurement
(carrier > 0 dBmV) Non-scrambled channels only.
Range: 0 to 10%
Resolution: <0.2%
Accuracy: +0.7%
Carrier to Noise Measurement
Non-scrambled channels only. No preselection required for 78 channels at +10
dBmV input level.
Range: 52 dB maximum
Resolution: 0.5 dB
Frequency Response
Sweep Rate » 1 second
Accuracy: + 0.5 dB, normalized (dependent on stability of referenced
carriers)
Display Scaling and Range: 1, 2, 5, and 10 dB/division; 6 vertical
divisions
Sweep Span: User definable from 5 to 1,000 MHz
Reference Storage: At least 16
Sweep Trace Storage: At least 50
Spectrum Mode
Spans: 3, 5, 10, 20, and 50 MHz (0.3, 0.5, 1, 2, and 5 MHz/div)
Sweep Rates: 2 seconds (50 & 5 MHz)
Display Scaling and Range: 0.5, 1, 2, 5, and 10 dB/division; 6 vertical
divisions Spurious Free
Dynamic Range: 60 dB (typical specifications)
Depth of Modulation
Assumes presence of white reference on any VITS line. Nonscrambled channels
only.
Range: 80 to 100%
Resolution: <0.5% at 85%
Serial Interface
Serial, RS232; Epson, IBM Printers
General
Log Linearity: +0.5 dB (typical)
Flatness: +0.5 dB @ 25 °C, @ 20 dBmV
Dimensions: 15.2 cm (W) x 25.4 cm (H) x 5.1 cm (D), 6" (W) x 10" (H) x 2"
(D)
Weight: 1.95 kg (4.3 lbs.)
Operating Temperature Range: -20 to +50°C; 0 to 120°F
Powering
Battery Life: 2.5 hours continuous (absolute worst case), replaceable battery
cartridge
Charge Time: 4 hours fast charge; 30 hours slow charge (with unit
operating)
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