GD300DQ TV Signal Level Meter


GD300DQ TV Signal Level Meter is designed to provide features which are most widely used and favored by professionals in CATV industry at the least cost. It can be used to measure accurately the analogue channels, digital channels efficiently and effectively with high accuracy rate. Mainly it supports C/N, level, channel power measurement, voltmeter function, spectrum analysis and so on. Overall, its functions are easy to use and can be used in a wide range of applications.

  1. Accurate QAM testing: digital average power, MER, BER
  2. Support multiple DVB mode: 16QAM, 32AM, 64QAM, 128QAM, 256QAM
  3. Single channel/Frequency simulated power levels testing
  4. Video and audio signal power levels testing
  5. V/A testing, show the frequency of video and audio, field intensity and power level difference simultaneously.
  6. C/N testing, slope testing
  7. QAM View includes BER, MER, and constellation

  1. Cable modem analysis using Zero span mode provides accurate, in-service power and C/N measurements
  2. QAM view option provides complete analysis of digital TV and forward cable modem signals
  3. Find ingress fast with Field View option. Cable technicians working in the field can see the reverse path at the head-end
  4. Digital QAM carrier demodulation includes 16, 32, 64, 128and 256 QAM constellation display with zoom, average digital power level, bit error rate(BER), and 22 to 39dB modulation error rate (MER).
Channel/Frequency Index
Frequency Range 5MHz~862MHz
Resolution 10KHz
Measurement Bandwidth 280KHz
Frequency Step 50KHz
Channel Type
Analog TV TV
Digital TV 16/32/64/128/256 QAM
Analog Power Level Testing
Measuring Range 25dBuV-120dBuV
Precision ±1.5dB
Resolution 0.1dB
Detection Method Average value detection
Input Impedance 75Ω
Digital Power Level Testing
Measuring Range 40dBuV-110dBuV
Precision ±2.5dB
Voltage Testing
Input Range 0~100V (AC/DC)
Precision ±2V
Resolution 0.1V
Digital Channel
Modulation Mode Comply with DVB-C/ITU J83-A
QAM Mode 16/32/64/128/256QAM
Symbol Rate 1MS/S-7MS/S
Bandwidth Set by user
MER 19-35dB
BER 1.0E-2~1.0E-8
Carrier-Noise Ratio(C/N)
Precision ±2dB
Resolution 0.1dB
Spectrum Analysis
Frequency Range 5MHz-862MHz
Power Levels Range 20dBV-120dBV
Testing Bandwidth 4.8, 20, 40MHz
Power Levels Range 20dBV-120dBV
Slope Testing
Number of Channels 8
Resolution ±0.1dB
Note: All the above mentioned technical indexes wholly represent the indoor temperature (25℃).
General Specifications:
Audio Output Built-in speaker
Power Supply Li-ion battery (3.7V, 2,000mAh, 5V AC/DC adaptor/charger
Operating Time Average 6~8 hours (fully charged)
Charging Time Less than 5 hours
Dimension 223*110*47mm
Net Weight 0.43kg
Working Temperature -10℃~+50℃
Storage Temperature -20℃~+60℃
Standard Accessories:
carrying bag, AC/DC adapter, battery, software


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