3-8
3.6.4
Instrument Preset Device (IP)
The Instrument Preset (IP) device dependent command aborts any measurement in progress,
clears all buffers and registers, and returns all functions to the default condition.
Table 3.5 provides the instrument preset condition for the 2251A following the device-
dependent command (IP).
Table 3.5 - Instrument Preset Conditions
2251A DEFAULT FUNCTION
COMMANDS
Frequency A
FA
Trigger Levels
AMN, BMN
Manual, Set to 0.00 V
Input Coupling
AAC, BAC
AC, Inputs A and B
Inputs A and B Impedance,1 M
S
AHI, BHI
Inputs A and B Input Attenuation,
AAD, BAD
X1
Input A Low Pass Filter Off
AFD
Input A and B Trigger Slope,
APS, BPS
Positive
Input Mode, A and B Separate
BCS
Math Constants
MD
X=0, Y=1, Z=1, Math Disabled
Continuous Measurement Mode
T0
SRQ Assertion Disabled
Q0
Time Interval Delay
DD
200
F
s, Disabled
Source, Front Panel
A0
Reference CLK10
B0
Gate Output Disabled
D8
External Arm, Front Panel
R8
Arm Internal
S10
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Содержание 2251A
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