Manual

Remote Control Commands and Queries
WM-RCM-E Rev D ISSUED: February 2005 125
STATUS
DDR?
Query
DESCRIPTION
The DDR? query reads and clears the contents of the Device
Dependent or device specific error Register (DDR). In the case of
a hardware failure, the DDR register specifies the origin of the
failure. The following table gives details.
B IT B IT V ALUE D ESCRIPTION
15...14 0 Reserved
13 8192 1 Timebase hardware failure detected
12 4096 1 Trigger hardware failure detected
11 2048 1 Channel 4 hardware failure detected
10 1024 1 Channel 3 hardware failure detected
9 512 1 Channel 2 hardware failure detected
8 256 1 Channel 1 hardware failure detected
7 128 1 External input overload condition detected
6...4 0 Reserved
3 8 1 Channel 4 overload condition detected
2 4 1 Channel 3 overload condition detected
1 2 1 Channel 2 overload condition detected
0 1 1 Channel 1 overload condition detected
QUERY SYNTAX
DDR?
RESPONSE FORMAT
DDR <value>
<value> : = 0 to 65535