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Rx Audio Gain
Adjusts the gain of the received signal from the receiver to the Guardian output pin.
Tx Audio Gain
Adjusts the gain from the Guardian audio input pin to the transmitter.
PTT Watchdog
Check to enforce a maximum transmit time or uncheck for unlimited transmit time. This is used to protect against a
"stuck" transmitter. The slider bar lets you adjust the transmit time for PTT watchdog from 0 to 255 seconds.
CWID
Some regulatory agencies require a station identification. The Guardian offers a Morse Code (CW) identifier that will
identify the unit on the first transmission and at periodic intervals after that. This field is used to set the Station ID
(CWID) or FCC Call Sign for the Guardian Modem.
If enabled, the Guardian will transmit the CWID string as Morse Code at the time interval selected by using the slider. A
time interval between 1 and 255 minutes is available.
Station ID is a combination of letters and numbers and the characters: space, exclamation point (!), Dollar Sign ($ - SX),
Ampersand (& - AS Wait), Apostrophe ('), parenthesis, plus (+), hyphen (-), comma (,), period (.), slash (/). The CWID
may be up to 13 characters in length.
Info
Displays Guardian firmware and hardware version information.
Diagnostics
Displays Guardian unit diagnostics and health status.
Carrier Sense Multiple Access (CSMA)
The Guardian Modem may be programmed to check for traffic on the RF channel before beginning a transmission if
enabled.
Off: Disables CSMA. Guardian will not check for traffic on RF channel before transmitting.
No Tx on Rx Data: Enables CSMA. Guardian will check the RF channel for valid data before transmitting. If valid data
is found, the Guardian will wait until the channel is clear before sending the data.
No Tx on Rx Carrier: Enables CSMA. Guardian will check the RF channel for an RF carrier. If carrier is found, the
Guardian will wait until the channel is clear before sending the data.
User Port Configuration
Used to configure the Guardian's User Port when configured in Modem Mode.
Read File
Read a Guardian Configuration file from the PC into the Guardian Programmer.
Write File
Writes the current configuration to the selected path and filename on the PC.
Read Guardian
Click to read the configuration file from the Guardian and update the display. Same as pressing the F9 key.
Write Guardian
Click to write the current configuration to the Guardian's flash memory. Same as pressing the F10 key.
Guardian™ Serial Modem or Analog Radio for Licensed Spectrum PN 001-5006-000 Rev. 3
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