© 2009 Cypress Solutions
Complete Manual: CTM-15X Firmware 1.2.0
(Revision 1.0)
18
2BOperating Your Modem
The CTM-15x Chameleon device has two power modes:
Mode
Description
Mode change event
Operation
In this mode the device is fully
powered up and ready to receive
or make network connections
The device will go back into shutdown mode when the
ignition/standby signal is deactivated or upon expiry of
the power ON timer as configured.
Shutdown
Only the modem’s power
management circuits are
operating.
The device will go back into operation mode when the
ignition/standby signal is activated, an input event
occurs, or upon expiry of the power OFF timer as
configured.
The CTM-15x can be configured to remain on for a defined period after the standby/ignition signal has
been turned off. This enables the modem to continue sending position reports or be used for data
operations even after the vehicle ignition has been switched off – e.g. for short duration driver breaks.
When in its power shutdown mode the modem may be configured to resume full operation by either the
standby/ignition signal becoming active, an input event occurring, or the power OFF timer expiring.
3.2
Power Consumption
The power consumption of the CTM-15x modem will depend on its supply voltage, its current operating
function and its RF environment.
The following table is provided to assist application integrators in defining the power requirements for
their specific application.
Power Consumption
Weak RF
signal(12V)
Strong RF
signal(12V)
Weak RF
signal(24V)
Strong RF
signal(24V)
Shutdown Mode
1.5mA typical
1.5mA typical
2.0mA typical
2.0mA typical
Downloading (Receive
data)
450mA max
350mA max
220mA max
195mA max
Uploading (Transmit
data)
500mA max
390mA max
260mA max
210mA max
3.3
Device Reset
The CTM-15X modem may be manually reset via the front panel using a <
1mm diameter (0.04”) wire tool
(a standard paper clip). This can be used to cause the modem to reset its operation, or to enter its
standby power mode.
reset: Press and hold for 0.25 to 1 second
