Hameg HM304, Руководство пользователя

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Subject to change without notice 28
the PC to the oscilloscope, otherwise it results in a buffer
overflow. The setting of the oscilloscope is made via the In-
strument Data Field (Device Data Field = DDF) as a binary
array. Each byte of the data field can also be called-up by a
single command. The following chart shows the structure
and the appertaining single commands:
Instrument Data Field with Single Commands
Kommand: D7 D6 D5 D4 D3 D2 D1 D0
CH1 GND AC INV1 ON VALUE Counter 0-13
CH2 GND AC INV2 ON VALUE Counter 0-13
mv/DIV = 0000
20V/DIV = 1101
MODE CT XY A-TR CHOP ADD 0 TR-SOURCE
00=Y1
01=Y2
1x=EXT
TB1 x10 0 0 TB-A TIME Counter 1-26
50ns/DIV = 00 bis
0,5s/DIV = 15hex
TB2 0 DEL-MODE TB-B TIME Counter 1-26
off = 00
SEA = 01
DEL = 10 50ns/DIV = 00 bis
DTR = 11 50ms/DIV = 12hex
TRIG ± 0 P-P NORM 0 COUPLING 0-6
AC=00, DC=01
HF=02, LF=03
LINE=04
TV-F =05
TV-L =06
TRLEV 8-BIT
VARTB1 8-BIT
VARY2 8-BIT
VARY1 8-BIT
XPOS B-BIT
POSY2 8-BIT
POSY1 8-BIT
The data field is internally checked for logical errors which
are protocolled in the RETURN CODE.
The following RETURN CODES are implemented:
0 = no error 1 = syntax error 2 = data error
3 = buffer overflow 4 = bad data set