Understanding Interlocks - microHAM micro KEYER 2R Manual

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Manual (88 pages)

Table Of Contents

Table of Contents

MK2R provides several kinds of interlocks and timing protection. When a radio is locked, MK2R

immediately disables all inputs which can cause the radio to generate power (microphone, sound card

output, CW, PTT1, PTT2, and PAPTT) to the "locked" radio and keeps them disabled as long as the

condition that generated the lock remains.

There are four locks:

Transmit interlock (or "SO2R mode")

–

Same Band lockout

–

Transmit Inhibit

–

Busy Inhibit

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Each interlock except for the same band lockout operate independently for each radio. The "Same Band

Lockout" disables both radios (and any other radio present on the iLink bus if it is also on the same band).

Transmit interlock: the SO2R contest mode lockout. This interlock is enabled by selecting the SO2R

mode check box on the SO2R tab. If checked, simultaneous transmission on both radios is not allowed.

When not checked, the radios can transmit at the same time. This lock works independently of any

logging software.

SAME BAND lockout: If MK2R detects that both radio are on the same band, transmission from both

radios is immediately disabled and the BUSY light on MK2R front panel will start flashing. Transmission

will be enabled only after one of the radios moves to a different band.

There are three methods of band decoding:

the frequency of each radio is obtained from Router based on the frequencies obtained by

–

decoding the transceiver control communication.

band is obtained from the transceiver BAND DATA (BCD) output. This is the preferred method

–

because it is the fastest and most secure way to obtain the band data. Unfortunately this data

is available only from certain Yaesu transceivers. However, if you are interfacing MK2R with

FT-840, FT-900, FT-920, FT-990, FT-1000D, FT-1000MP, Mark V, FT-2000 or FT-9000, you

should connect the Yaesu Band Data output to the ACC port and select pins 6-13 as band data

inputs.

If band data is provided by the transceiver, SAME BAND protection works even if the computer

is turned off or you are using an MS-DOS based logging program.

Note: If the ACC port is configured for band data input, that input has priority and is assumed

to be valid even if a communications error causes Router to decode a different frequency.

Note: Do not configure the ACC pins as band data inputs unless they are connected to a

radio. If they are left unconnected, a "same band" lockout will occur.

frequency is obtained from another microHAM device via the iLINK bus.

–

Note: If one radio is turned off, cycle the power on MK2R to disable "same band" lockout.

BUSY: is a lockout designed for Serial Devices defined on the ACC tab. When the serial device responds

to the MK2R with a "busy" response, MK2R locks out the specified radio. While the serial device is BUSY

the BUSY light on MK2R front panel will be lit.

INHIBIT: works in two modes depending on direction of "inhibit" signal. Pins 2, 3, 4, and 5 are available

for inhibit signals. Each can be independently configured as inhibit input or output. If Inhibit is active for

either radio, the BUSY light on MK2R front panel will be lit.