The Settings menu is only available with the MA24126A, MA242x8A, and MA243x0A, and power sensors. The Settings menu shown in Figure: Settings Menu is used for saving and recalling PowerXpert setups, resetting PowerXpert, setting the sensor time out, and enabling secure mode.
Settings Menu
Saving and Recalling Settings
The current settings can be saved to any one of ten non-volatile storage locations. If the storage location was already in use, the previously stored settings are automatically overwritten. Trigger Arm Type, Sensor Timeout, Scale Mode settings, Units, and a fixed Offset value are not stored as part of the saved setup and will not be recalled
Save/Recall Setup Dialog
Resetting to Factory Settings
This selection resets PowerXpert and the power sensor to the default state.
Sensor TimeOut Setting
Sensor TimeOut is a PowerXpert feature. It is active during internal or external triggering only (Time Slot and Scope modes). It is provided for situations where a trigger event may not occur for a long period of time (greater than a default of 1 minute).
Sensor TimeOut Dialog
During triggering (internal or external), the sensor sends the data to the application after it receives a trigger. If the PowerXpert application does not receive any data from the sensor for the set timeout period, then the user is informed and is prompted to re-arm the sensor.
Trigger Timed Out Dialog
Secure Mode
The MA24106A is an secure device and can be moved in and out of the secure facilities as there are no user accessible locations in this sensor. In the MA24x08A, MA24x18A, MA24126A and MA243x0A, the user can store and retrieve instrument set ups in this memory. Memory is cleared using the secure mode procedure. The MA24105A does not use this feature because it is a secure device.The MA24106A USB power sensor has two different types of memory devices:
• Non-Volatile 32 kB FLASH memory within the PIC18F4550 micro-controller. This contains firmware for the sensor. This memory is not accessible by the user.
• Non-Volatile 8 kB EEPROM. This contains sensor factory calibration data and sensor information like Serial no, model no etc. This memory is not accessible by the user.
The MA24105A, MA24108A, MA24118A and MA24126A USB power sensors have three different types of memory devices:
• Non-Volatile 512 kB FLASH memory within the AT91SAM7SE512 micro-controller. This contains firmware for the sensor. User cannot write to or access this memory.
• Volatile 32 MB SDRAM. This contains program variables, buffers and calibration data information while sensor is in operation. This is initialized on power up and wiped clean when powered down. The user cannot write to this memory directly, and it is completely cleared during power down. This memory is not accessible by the user.
• Non-Volatile 4 MB Data FLASH. Contains sensor factory calibration data, user setups (user setups are not used on MA24105A) and sensor information like Serial no, Model no etc. The user cannot write to this memory directly.
The MA242x8A and MA243x0A USB power sensors have four different types of memory devices:
• Static memory 128 kB within FPGA. It is initialized during FPGA configuration with the bootloader code, which starts to execute after configuration is complete. This memory is not accessible by the user.
• Non-Volatile 64 kB FLASH memory. This contains boot flash for the FPGA and firmware for the sensor. This memory is not accessible by the user.
• Volatile 512 MB SDRAM. This acts as program and data storage while the sensor is in operation. It is initialized on power up and wiped clean when powered down. This memory is not accessible by the user.
• Non-Volatile 128 kB Data FLASH. This contains sensor factory calibration data, user instrument setups, and sensor information like Serial no, Model no etc.
