Tektronix 2221 - Page 102

Options and Accessories -- 2221 Operators
Table 7-22
Vertical Commands
C
Commands Description
2221 and 2230
CH1 ?
Query only .
Returns the
present CH1
settings : CH1
VOL : < NR3
> , COU
: < AC ,
DC , or GND > , < NR3 > is the VOLTS / DIV setting .
2221 and 2230
CH1 ?
VOLTS
Query only . Returns the CH1 VOLTS / DIV setting ( including the probe attenuation
factor ) . The value returned is a < NR3 > number . For example , if the VOLTS / DIV
setting is 50 mV , the value returned is CH1 VOL : 5.0E - 2 . An execution warning
is generated if the VOLTS / DIV CAL knob is not in the detent ( calibrated )
position .
2221 and 2230
CH1 ?
COUpling
Query only . Returns the present CH1 input coupling : COU : < AC , GND , or DC > .
Queries for CH2 the same as for CH1 .
2221 and 2230
CH2 ?
CH2 ? VOLS
CH2 ?
COUpling
2221 and 2230
CH2 ? INVert
Query only
. Returns
CH2 INV
: < ON or
OFF > .
ALL
VMOde ?
U
Query only . Returns the vertical mode setting : VMO : < CH1 , CH2 , ADD , CHOP ,
ALT ,
or
XY > .
2221 and 2230
PROBe
? CH1
or CH2 >
u
Query only . Returns the probe attenuation coding of the queried channel : CH < 1
or 2 > PROB : < NR1 > . < NR1 > may be 1000 , 100 , 10 , 1 , -1 , or -2 . The - 1
value is for identify , and the –2 value is for unknown probe coding .
บ
U
U
U
บ
7-26
U