microHAM Digi Keyer II Instruction Manual page 20

PW1 on radio bus – When this box checked, Router periodically generates an Icom "Transceive"
broadcast to keep the PW1 synchronized.
NOTE: Check this box if you have an IC-PW1 or other Icom compatible accessory physically
connected in parallel with the transceiver. Do not check this box if the only connection is to the
transceiver and the PW1 or other other accessory is connected to the accessory CI-V port
(described later).
Tracking:
Tracking: This function allows an external receiver to track the transceiver attached to DK II.
NOTE: The transceiver attached to DKII must be properly interfaced and CAT must be
functioning properly. Tracking does not work for "no radio" choices.
Radio: Specifies SDR receiver model.
Source QRG: Specifies whether the SDR will track the transceiver transmit or receive frequency.
Port: Specifies COM port used to communicate with the SDR.
Offset: Frequency offset between the receiver and transceiver. Default is 0Hz, resolution is 1Hz.
NOTE: For specific receiver configurations, please refer to Appendix C..
The bottom two-thirds of the Radio
window is a serial communication
monitor. The monitor uses colors and
tags to indicate which device is
responsible for the data. Black queries
(H1-TX or H2-TX) and gray radio
responses (H1-RX or H2-TX) are from
the "host" application (e.g., logger), H1
indicates the host application on the
main CAT port, H2 is the host
nd
application on the 2
packets (R-TX and R-RX) are
polls/responses from/to Router and not
routed to the application.
Router monitors the communication
when the host application performs
control and polls the radio periodically
for any missing information (VFO
frequencies and mode). Because
some applications do not poll the radio
regularly or completely, Router must
break this communication to update its internal state. In order to avoid confusing the application when
Router polls the radio, data from the application is buffered and sent to the radio after Router receives a
response to its query. If Router does not receive response to a poll within the time allowed or does not
understand the response, it displays "oldest query discarded" but forwards all data to the virtual serial port
to avoid confusing the application (logger).
Since USB transmits data in frames with a delay between frames, Router indicates frame boundaries with
three dots (...). When a packet ends with three dots it means that the data continues in the next frame.
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CAT port. Green
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