Racal Instruments 2251A Operator's Manual page 59

Table 3.20 - Alphabetical List of 2251A Command Codes (continued)
CODE
RT
RUT
S10
S11
S12
S15
S16
S17
S18
S20
S21
S30
S31
S50
S51
S52
S60
S61
S70
S72
S73
S74
S75
3-30
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Selects Rise Time A measurement mode
Recalls unit type
Selects Arming mode.
Selects Arming mode.
Selects Arming mode.
Selects Arming mode.
Selects Arming mode.
Selects Arming mode.
Selects Arming mode.
Selects default configuration of Input A and B/Cancels S21 (Default)
Interchanges Inputs A and B
Selects continuous auto-trigger measurement (Cancels S31)
Selects single shot auto-trigger measurement
Selects Mean Amplitude measurement mode (Cancels S51 or S52)
Selects Positive Peak amplitude measurement mode
Selects Negative Peak amplitude measurement mode
Selects Totalize A by B measurement mode when function code TA is written
(Cancels S61)
Selects Manual Totalize measurement mode when function code TA is written
Check mode which measures internal 10MHz reference is enabled when CK has
been written to the 2251A (Cancels S71 to S78)
START TEC short continuous calibration (must be in CK mode)
START TEC long continuous calibration (must be in CK mode)
STOP TEC short calibration (must be in CK mode)
STOP TEC long calibration (must be in CK mode)
RESPONSE
Start: Internal
Start: External +ve
Start: External -ve
Start: External +ve
Start: External +ve
Start: External -ve
Start: External -ve
Stop: Internal (Default)
Stop: Internal
Stop: Internal
Stop: External +ve
Stop: External -ve
Stop: External +ve
Stop: External -ve