
4-208 Agilent B1500A/B1505A Programming Guide, Edition 11
Command Reference
TTI
The MFCMU measures the primary parameter and the secondary parameter (for
example, Cp and G). Use the IMP command to select the measurement parameters.
See “IMP” on page 4-107.
Execution
Conditions
The CN/CNX command has been executed for the specified channel.
The IMP command has been executed.
This command is not effective for the 4 byte binary data output format (FMT3 and
FMT4).
Syntax TTC chnum,mode[,range]
Parameters chnum : MFCMU measurement channel number. Integer expression. 1 to 10 or
101 to 1001. See Table 4-1 on page 4-16.
mode : Ranging mode. 0 (auto ranging. initial setting) or 2 (fixed range).
range : Measurement range. Needs to set when mode=2. Integer (0 or more).
50 Ω, 100 Ω, 300 Ω, 1 kΩ, 3 kΩ, 10 kΩ, 30 kΩ, 100 kΩ, and 300 kΩ
are selectable. See Table 4-17 on page 4-30. Available measurement
ranges depend on the output signal frequency set by the FC command.
Remarks To read the time data with the best resolution (100 μs), the timer must be cleared
every 100 sec or less for the FMT1, 2, or 5 data output format, or
every 1000 sec or less for the FMT 11, 12, 15, 21, 22, or 25 data output format.
Example
Statements
OUTPUT @B1500;"IMP 101"
OUTPUT @B1500;"TTC 8,2,1000"
ENTER @B1500 USING "#,3X,13D,X";Time
ENTER @B1500 USING "#,3X,13D,X";Cdata
ENTER @B1500 USING "#,3X,13D,X";Ddata
PRINT "Data=";Cdata*1000000;" uF, D=";Ddata;
", at ";Time;" s"
TTI
The TTI command performs the high speed spot measurement, and returns the
measurement data and the time data from timer reset to the start of measurement.
The command starts a current measurement regardless of the SMU operation mode,
trigger mode (TM command), and measurement mode (MM command).
Execution
Conditions
The CN/CNX command has been executed for the specified channel.
This command is not effective for the 4 byte binary data output format (FMT3 and
FMT4).
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