Important Warnings - microHAM Digi Keyer II Instruction Manual

Independent keying buffers for Power Amplifier and LNA switching
extended range solid state output for low voltage T/R lines or QSK
relay isolated output for vintage PA with negative voltage T/R lines
Bypass LNA before activating both PTT circuits for EME or scatter
Footswitch input with programmable functions
programmable PTT activation delay in 1ms steps
selectable muting of CW and/or FSK when footswitch is closed
Squelch input for signaling to computer
two inputs, one is active low, second is active high
ideal for Echolink and remote interfacing applications
No external power adapter (where the radio provides auxiliary power)
No noisy DC to DC converters
USB and Sound chip are powered from the computer USB port
Controller is powered from transceiver or transceiver power supply
Strong immunity from RFI
integrated chokes and filters for best RFI immunity
advanced shielding and circuit design to suppress RFI generation
Input/Output connectors
Computer: USB, Radio: DB15, Paddle: 6.3 mm, Sub RX: 3.5mm
Footswitch: RCA, PA PTT: RCA, LNA PTT: RCA, PTT IN: RCA,
PS/2: MiniDIN6, u2R: 2x3.5mm
Metal/Aluminum case, powder coated and silk screened
Free firmware/software upgrades via internet
165 mm (w) x 110 mm (d) x 44 mm (h)
You must set the CAT level jumpers inside the DIGI KEYER II
If you power DIGI KEYER II from an external power supply ALWAYS
check the polarity of the external 13.8 V supply.
DO NOT use the same external power supply for DIGI KEYER II and
your transceiver unless DK II receives power from the transceiver.
If your radio includes upgradeable firmware,
DO NOT perform any upgrade through DIGI KEYER II .
microHAM © 2010 All rights reserved

2 - IMPORTANT WARNINGS

before using it for the first time.
4