CalAmp GUARDIAN User Manual - page 36
Guardian Manual 001-5006-000 Rev 0
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P a g e
Diagnostics from the last 15 stations heard are stored in each unit. These values are read using the Offline or
Online Diagnostics screen.
NOTE: All units in a network must use the same setting.
Transmitted information includes:
• Short ID
• Supply Voltage (in Volts)
• Internal Temperature (in Celsius)
• Forward and Reverse Power (in Watts)
• Received Signal Strength (in dBm)
Output Online Diagnostic Data to Setup Port
Allows the user to configure the Guardian Modem to output online diagnostics through the Setup Port. The
default value is “Disabled” (unchecked).
Repeater Mode (Extended T1 RTS-CTS)
The Repeater Mode option extends transmitter turn-on time to allow use in a repeater network. The default value
is “Disabled” (unchecked).
Extended Turn-off (T2)
The Extended Turn-off option extends transmitter turn-off time to enforce a quiet period at the end of each
transmission. Select “Enabled” if data equipment does not clearly terminate each data frame and is susceptible to
extraneous bits (dribble bits) at the end of data transmission. The default value is “Disabled” (unchecked).
Values are: 4800 b/s = 16 ms; 9600 b/s = 8 ms; 19200 b/s = 4 ms
An end-of-transmission quiet period approximately 8 characters long can be invoked on the Guardian by holding
its transmitter on briefly after RTS is dropped. This quiet period (which occurs between the last valid data
character and any possible extraneous “noise” bits) may be of benefit to some DTE that would otherwise be
adversely affected by the extraneous bits.
Rx-Only Radio
The Rx-Only Radio option instructs the modem to receive data and diagnostics from other modems only. Enabling
this option disables user data delivery. The default value for this option is “Disabled” (unchecked).
Dynamic Carrier Detect Off Threshold
Allows the modem to automatically adjust the Carrier Detect Off Threshold based on the RSSI while receiving data.
If selected, the Carrier Detect Off level will automatically adjust to approximately 15 dB below the actual signal
strength. This provides rapid detection of loss-of-carrier and minimizes or eliminates ‘bit dribble’ at the end of
transmissions. The default value is “Enabled” (checked).