microHAM microKEYER Manual page 20

when that information is not available from the communication between the application and radio.
NOTE: "Disable router queries" disables Router polling only when the port has been opened
by an application program. When the virtual port is closed, Router always polls the radio to
support the automatic switching functions
polling, select one of the "none" options in the Radio box.
WARNING: DO NOT select "Disable Router queries" unless you have a specific reason to do so. Router
only polls for information that is not requested by the logger and does not interfere with logger polling.
Disabling Router queries may result in incorrect frequency and/or mode decoding and can have a serious
impact on overall operation.
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).
Port: Defines a virtual or hardware serial port for an SDR radio used with the MK. The CAT
connection in microKEYER is disabled. This function is not currently supported.
SDR Tracking:
Tracking: This function allows an external receiver to track the transceiver attached to the
microKEYER .
NOTE: The transceiver attached to microKEYER 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 grey 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 application on the 2
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.
microHAM © 2010 All rights reserved
of microKEYER.
nd
20
If it is necessary to disable all
CAT port. Green packets (R-TX and R-RX) are