Nissei DG-503 User manual

INTRODUCTION
This SWR & Watt meter is highly accurate for measuring Forward Power,
Reflected Power, and the VSWR of Analog and Digital transceivers
Main Features:
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
Measurement (Analog mode)
Measurement (MAX mode) Not available DMR (TDMA), AM, SSB
Calibration point
Power Range
Accuracy
Minimum Power for SWR
Input/Output Connector
Weight (Net)
Insertion Loss
Testing Function
Input/Output Impedance
Dimension (W/H/D) mm
Accessories
<FRONT PANEL>
1 4 2
<FRONT & REAR PANEL>
1. LCD Display : Indicates FWD/REF and VSWR
2. HF & V/UHF band switch
3. Power switch
34. MAX : Measuring DMR (TDMA) / AM / SSB
(DG-503MAX only : when rear switch in MAX mode)
<REAR PANEL>
<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 'black dot' - DG-503MAX only)
Made in Taiwan
50 Ohm
140 x 84 x 122
Operation Manual, 12V DC Wire
(+/- 5%)
1W
SO239 (N-female option)
750 g
Less than 0.1 dB
Fwd/Ref Power & VSWR ratio
0 - 200W
Digital SWR / Watt Meter
Model: DG-503 & DG-503MAX Instruction manual
1.6-60 MHz/125-525 MHz
CW, FM, FDMA
28 / 145 / 435 MHz

Ver. 20220805 IM_Kevin
Combined DG-503 & DG-503MAX