NISSEI DG-503 Digital SWR Watt Meter Instruction Manual

June 12, 2024
NISSEI

NISSEI DG-503 Digital SWR Watt Meter Instruction Manual
NISSEI DG-503 Digital SWR Watt Meter

INTRODUCTION

This SWR & Watt meter is highly accurate for measuring Forward Power, Reflected Power, and the VSWR of Analog and Digital transceivers

MAIN FEATURE

  1. Large LCD (3.5″) display for easy of reading.
  2. Forward / Reflected power / VSWR ratio in one push button
  3. Selectable to measure DMR (TDMA), AM, SSB (DG-503MAX)
  4. LCD backlight display
  5. Convenient control layout for easy operation
  6. Packing gift box and DC 12V wire.

SPECIFICATIONS

MODEL DG-503 DG-503MAX
Frequency Range 1.6-60 MHz/125-525 MHz
Measurement (Analog mode) CW, FM, FDMA
Measurement (MAX mode) Not available DMR (TDMA), AM, SSB
Calibration point 28 / 145 / 435 MHz
Power Range 0 – 200W
Accuracy (+/- 5%)
Minimum Power for SWR 1W
Input/Output Connector SO239 (N-female option)
Weight (Net) 750 g
Insertion Loss Less than 0.1 dB
Testing Function Fwd/Ref Power & VSWR ratio
Input/Output Impedance 50 Ohm
Dimension (W/H/D) mm 140 x 84 x 122
Accessories Operation Manual, 12V DC Wire

Front panel

**

Front Panel**

  1. LCD Display : Indicates FWD/REF and VSWR
  2. HF & V/UHF band switch
  3. Power switch
  4. MAX : Measuring DMR (TDMA) / AM / SSB
  5. (DG-503MAX only : when rear switch in MAX mode)
    NOTE: When measuring TDMA or other digital modes the display may blink due to the nature of the transmission this is not a fault of the design and is normal operation

**REAR PANEL


5 &8.TX : Coax connector to transmitter RF output
6 &9. ANT : Coax connector to antenna system
7. Power source : 12V DC wire [ Black is negative (-), black/white is positive (+) ] 10 MAX switch : Selectable DMR (TDMA), AM, SSB Push to right ‘white dot’ is MAX mode (DG-503MAX only)

Front Panel

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