Agilent Technologies 4294A Service Manual download pdf (Page 273)

Chapter 16 273

GPIB Command Reference

BOTV

16. GPIB

Command Reference

( * , A - E )

BOTV

Syntax BOTV <numeric>[OHM|DEG|RAD|SIE|H|F|PCT]

BOTV?

Description Sets the minimum value on the display screen in the Y axis (vertical axis) direction (the

value of the bottom of the grid).

If the difference between this minimum value and the maximum value on the display

screen in the Y axis direction (set with the

“TOPV” command on page 456) is less than

10E-15 (for the log Y axis format, the ratio of the maximum value to the minimum value is

less than 5), the maximum value is automatically changed so that it becomes larger than the

value of the minimum value plus 10E-15 (for the log Y axis format, the value indicating

that the ratio of the maximum value to the minimum value is 5). Also, the width of a single

grid tick (SCALE/DIV) and the reference line value (REFERENCE VALUE) are

automatically changed so that they match with the Y axis minimum value and maximum

value setting.

For the log Y axis format, if the sign is different from the display screen maximum value

setting, the sign of the maximum value is automatically changed to the same sign as the

minimum value.

Parameters

If the specified parameter is out of the allowable setting range, the minimum value (if the

lower limit of the range is not reached) or the maximum value (if the upper limit of the

range is exceeded) is set.

Query response {numeric}<newline><^END>

Corresponding

key

[Scale Ref] - BOTTOM VALUE

Description Minimum value on the display screen in the Y axis (vertical axis)

direction

Range For formats other than the log Y axis format:

-1E9 to 1E9

For the log Y axis format:

-200E6 to 200E6

Initial value For formats other than the log Y axis format:

Varies depending on the measurement parameter as follows:

For other than θ: 0

For θ: -180

For the log Y axis format:

Varies depending on the measurement parameter as follows:

For |Z|, R, X, Rs, Rp: 1

For θ: 100E-6

For |Y|, G, B, D: 1E-6

For Cs, Cp: 1E-9

For Ls, Lp: 10E-6

For Q: 1E-3

Unit Varies depending on the measurement parameter (refer to the

explanation of unit in

“SCAL” on page 423).

Resolution

1E-15

*1.This is the minimum value (when the set value is small). The resolution

becomes larger as the set value becomes larger.

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Agilent Technologies 4294A Service Manual Page 273

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