Registered in England No. 08405712
VAT Registration No. GB163 04 0349
Siretta Ltd
Basingstoke Road
Spencers Wood
Reading
Berkshire RG7 1PW
sales
email
web
+44(0)118 976 9000
www.siretta.com
25
ZETA-xxP Series
Hardware Manual
rev
D
The ZETA-xxP series modems support a standard USB 2.0 device interface
compatible with USB 2.0 specifications and supporting the USB low-speed [1.5
Mb/s] and full-Speed (12 Mb/s) modes. The USB port can be used to send AT-
commands, reprogram the modems and view debug output. The maximum baud rate
available to communicate with the ZETA-xxP series modems is up to 12 Mbit/s.
Drivers are required to use the USB port and are available for several operating
systems including Windows/Linux. Please contact Siretta for more information.
In high speed LTE modes of operation, the downlink data speed rates can be higher
than the maximum RS232 serial data rate. To achieve this network data rate using
the ZETA-xxP, integrators need to interface the ZETA-xxP to their applications in full-
speed (12 Mb/s) mode.
The device driver creates up to 6 virtual COM ports on the system for access to the
module. 4 of these ports can be configured for use as general purpose AT command
communication ports.
USB0
→
Configurable port
*
USB1
→
Configurable port
*
USB2
→
Configurable port
*
USB3
→
Configurable port
*
USB4
→
Configurable port
*
USB5
→
Configurable port
*
USB Interface Drivers
Supported baudrates
»
300
»
600
»
1200
»
2400
»
4800
»
9600
»
19200
»
38400
»
57600
»
115200
»
230400
»
460800
»
921600
»
2900000
»
3200000
»
3686400
»
4000000
*
Please see the following command 'AT#PORTCFG' to configure
these ports on your modem.
The ZETA-XxP series modems do not support autobauding.
Integrators have to set the correct speed for serial communication
before device initialization. If the right speed is set, the device
responds with OK to any valid AT command.
The default baudrate is 115200.
To change the baudrate:
»
Send command AT+IPR=<rate><cr>
»
Wait for ‘
OK
’ response
