EZMaster
EZMaster
User’s Guide
Page 51 of 53
Hardware Specifications
Specifications
Overall Dimensions
H:40 mm, W:330 mm, D:170 mm
Weight
3 Kg – 9.0 lb.
DC Power requirements
13.8 V DC nominal < 450mA or USB Power Supply
Input Microphone impedance
600 ohm resistive, minimum
PTT max contact rating
2 A @ 24 V or 1 A @ 48 V
CW direct keying ratings
Opto-coupled Output, tube amps not supported. Positive
FSK direct keying ratings
Opto-coupled Output, tube amps not supported. Positive
Serial RS232 port (DB9M connector)
Standard RS232 (3 wires)
Serial COM port (DB9F connector)
Standard RS232 (3 wires)
Rig control interface (dual circuit MINIDIN) Standard TTL 5V Logic ( for ICOM, YAESU & KENWOOD )
Antenna Matrix (OUTPUT)
150ma max (each output line) @ 40 V
Parallel Port
(INPUT)
Standard Parallel Port (caps filter on each line)
PTT
(INPUT)
Foot-Switch contact (2 A rating)
A/B
(OUTPUT)
Relay contact (2 A rating)
AUX
(INPUT)
RTS/DTR/TX (for alternate CW/FSK Input)
Notes
The microphone audio is completely isolated from all other grounds and it is transformer coupled.
The speaker audio is completely isolated from all other grounds.
The three sound card audio signals are isolated using three audio transformers.
The Radio PTT output signals are isolated using, DPDT relays.
CW and FSK Output are opto-isolated.
The relays provide adequate current and voltage capability to switch tube rigs.
