BLUEPIRAT MINI | USER MANUAL /
page 36 of 62
11.3
Serial (RS232)
Channels
up to 5
Data bits
5, 6, 7, 8
Stop bits
1, 2, 1.5
Parity
None, odd, even
Table 11.3: Serial interface
The BLUEPIRAT Mini supports only the RS232 specification.
11.3.1
Segmentation of the serial data
The received serial data are clustered into data blocks separately for each channel. Each block
is finalized after a certain time or when it reaches a certain maximum size. The time is 30 to 60
ms depending on the channel. The maximum size is 49 to 80 bytes. A time stamp is assigned to
each block when it is finalized.
11.3.2
RS232 transceiver
The threshold voltages for data reception are the usual RS232-
defined values. A logical “1” is
recognized for input voltages smaller 0 Volts, a logical “0” for input voltages higher than 3 Volts.
11.4
FlexRay
The BLUEPIRAT Mini is able to record FlexRay bus data according to the FlexRay specification
2.1A. The data logger records all valid and invalid, static and dynamic frames of the two
FlexRay channels, including “a” and “b”, independently if the FlexRay bus is in a synchronous or
asynchronous state.
Table 11.4: FlexRay
Attention:
For every measurement with FlexRay the line must be separated and lead through the
BLUEPIRAT Mini. Therefore all connectors exist two times at the cable set.
Turning off the BLUEPIRAT Mini thereby causes no interruption of the FlexRay line.
11.5
Analog / Digital Input
The BLUEPIRAT Mini has three analog and three digital inputs, whereas respectively the first
channel is located in the logger and records the input voltage. The measuring range is between
0 V and + 20 V, the accuracy is 3 %. The sampling rate is adjustable from 1 ms to 100 s. The
switching threshold for the digital input is 7 V ± 0.2 V, see chapter 14 Data sheet.
The interfaces are combined in the cable set but can be used both at one time.
Channels
2x (a + b)
Max. bit rate
10 Mbit/s
Frames
Static, Dynamic, Null Sync, Startup
Transceiver
AS8221
