Sencore designs, builds, and markets electronic test instruments.

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DSL757 - "DIRECTOR"^TM Digital Signal Level Meter

All channel/frequency tuning from 50 to 860 MHz to meet your system testing needs now and in the future.
Auto attenuation from -35 dBmV to +60 dBmV for full signal measuring capabilities.
18 Volt (500 mA) power output with front panel access for testing and powering down-converters
         and decoders.
Easy-to-read bar graph of relative signal strength for quick antenna peaking and alignment.
Signal-to-Noise measurements to determine the quality of signal and identify problems with either
         signal or system noise.
Full signal testing capabilities that include: Video level, Audio level, C/N, and HUM.
Exclusive Peak-to-Valley measurement on digital channels.
Portable, rugged and weatherproof design that is ready for any environment with backlit LCD display
         for working in low light conditions.
Smart power - over six hours of continuous use on a single battery charge and is fully recharged in less
         that six hours. The DSL757 features both AC or DC charging capabilities.
Eight pre-programmed channel plans or easy custom channel planning capabilities to fit your system needs.
Sencore’s industry exclusive 3-year warranty.

DSL757 Condensed Specifications

TUNING RANGE

Channel Plans:

FCC (std), HRC, IRC, VHF/UHF, PAL A, PAL B/G, PAL I, Belgium, German, Israel, Japan, Cust 1 & 2

Channel Step Size: 1 CH

Frequency Step Size: 50 kHz

CATV BAND

Channels: 2 thru 134 (CH 1 in HRC & IRC)

Frequency: 50 thru 859.25 MHz

VHF + UHF BAND

Channels: 2 thru 69

Frequency: 50 thru 810 MHz

TUNING ACCURACY

Channel & Frequency: 10 PPM (&plumn; 10 kHz)

RESOLUTION

Channel Mode: 1 Channel, 1 thru 127 VHF & 14 thru 69 UHF

Frequency Mode: 50 kHz

RF INPUT

Sensitivity: - 35 dBmV

Maximum reading: + 60 dBmV

Input Impedance: 75 Ohms

Return Loss: 15 dB minimum

Max. Safe Input: 100 VDC or 100 Vrms

Do Not Exceed This Rated Voltage!

Input Impedance: 75 Ohms

DIGITAL CARRIER FUNCTIONS

Selectable Digital Symbol Rates: 1 MHz, 2 MHz, 3 MHz, 4 MHz, 5 MHz, 6 MHz, 7 MHz, 8 MHz

MEASUREMENT DYNAMIC RANGES

1 MHz Range: -29.5 dBmV to +65.3 dBmV

2 MHz Range: -26.5 dBmV to +68.5 dBmV

3 MHz Range: -24.7 dBmV to +70.3 dBmV

4 MHz Range: -23.5 dBmV to +71.5 dBmV

5 MHz Range: -22.5 dBmV to +72.5 dBmV

6 MHz Range: -21.7 dBmV to +73.3 dBmV

7 MHz Range: -21.0 dBmV to +74.0 dBmV

8 MHz Range: -20.4 dBmV to +74.6 dBmV

DIGITAL LEVEL MEASUREMENTS

Divides digital channels into 500 kHz segments, measures the signal level at the center frequency

of each segment, then calculates the signal level of the whole channel using the information from

these segment levels.

DIGITAL PEAK TO VALLEY FUNCTION

Divides digital channels into 500 kHz segments, measures the signal level at the center frequency

of each segment, then displays the difference between the highest and lowest segment levels.

VIDEO AND AUDIO CARRIER LEVELS

Amplitude Resolution: 0.1 dB

AMPLITUDE ACCURACY

CATV and VHF/UHF:

± 1.0 dB, Flatness 5 to 750 MHz

± 1.0 dB, Level Linearity -35 to +60 dBmV

Typical: ± 1.5 dB Total, @ 70°F

AMPLITUDE ACCURACY

CW vs Modulated vs Scrambled: ± 0.25 dB

AUDIO/VIDEO CARRIER RATIO A/V

Amplitude Resolution: 0.1 dB

Amplitude Accuracy: ± 1 dB

AMPLITUDE VARIATION OVER TEMPERATURE

All Bands:

± 2.5 dB, 15°F to 120°F

± 3 dB, < 15°F, > 120°F

Amplitude Resolution: 0.1dB

Amplitude Accuracy: ± 1 dB

HUM MEASUREMENT

Input: > -10 dBmV, Modulated Video or CW carrier

Measurement Range: 0.5 to 10.0%

Display Resolution: 0.1%

Measurement Accuracy:

0.5%, from 0.5 to 5%

1%, from 5% to 10%

C/N RATIO

Automatic Off Channel Test

Amplitude Resolution: 0.1 dB

Amplitude Accuracy: ± 1 dB

RANGE

Input Level: 20 dBmV provides 44 dB of range

LNB SUPPLY POWERING

18 Volts at 500 mA minimum

GENERAL

Power Requirements: 120 VAC, 12 VDC Rechargeable Battery Life: 6 hrs continuous

Battery Saver Time-out: 10 min. nominal

Battery Charge Time: 6 Hr.

Charger: 14 V at 700 mA (12.0 V min, 17 V max)

Size: 10.4" H x 6.0" W x 2.4" D

Weight: < 3.5 lb.

ENVIRONMENTAL

Operating Temperature: -0°F to +120°F

Storage Temperature: -40°F to +150°F

Humidity: 0 to 90% (non-condensing)

Water Resistant: Water on any surface (Not Rated Submersible)

ACCESSORIES SUPPLIED WITH UNIT

AC Charger/Adapter

12 VDC Vehicle Charger/Adapter

3’ RG-59 Test Cable

OPTIONAL ACCESSORIES (NOT SUPPLIED)

Padded Case

Sky Hooks

20 dB Test Probe

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