4.7.13
V (Output Value)
Purpose
Use to program the instrument to the desired output reading.
Format
Vn
Parameters
V *n.nnnnE inn Output value using exponent
Description
The V command is used to program the output of the volts, amps and coulombs
sources. Valid values for the V command depend on the range that the instrument
is on. For example, sending V3X with the instrument on the 2V range is invalid
and will result in a number (“nErr”) error. However, if the the instrument is in
autorange (RO), any value within the output range of the function will be valid. The
instrument will go to the lowest possible range that can accommodate the value sent
over the bus.
The least significant digit (LSD) of the Model 263 display can only be a zero or a
five. For this reason the Model 263 will round a 5% digit V command value as follows:
1. If the LSD of the command value is a 1012, the LSD on the display will be rounded
to a 0. Example: Sending V1.00252X will result in a display reading of 1.00250.
2.
If the LSD of the command value is a 3, 4, 6 or 7, the LSD on the display will
be rounded to a 5. Example: Sending V1.00254X will result in a display reading
of 1.00255.
3. If the LSD of the command value is an 8 or 9, the display will round to 10. That
is, the LSD will be 0 and the next more significant di it will increment (carry)
by one unit. Example: Sending V1.00258 will result in a &play reading of 1.00260.
4. If a 199998 or 199999 count command value is sent, the instrument will display
a 199995 count reading. The instrument cannot round up and carry because 199995
is the maximum reading that the Model 263 can display. For example, sending
V1.99999X will result in a display reading of 1.99995. However, if the instrument
is in autorange (RO), it will instead uprange (if not already at the highest range)
and display a 20000 count reading. For example, sending ROV1.99999X, will cause
the Model 263 to uprange and display a reading of 2.0000. On the highest range,
the reading will limit at 199995 counts.
PrOgratIIIning
1. Only as many significant digits as necessary need be sent. Examples:
Notes
Send V1.9E-9X instead of V1.9000E-09X
Send VlX instead of Vl.OOOOX
2. The instrument will ignore the digits of any command value that exceeds 5% digits.
For example, if a value of 1.222228 is sent, the eighth will be ignored and 1.22220
will be displayed.
3. The V command will not work in the ohms function. If the V command is sent,
the instrument will ignore the V command, generate a number (“nErr”) error,
but execute any other commands sent in the same command sequence.
4.26
To Next Page
Loading...
Need help?
General
