Operating instructions

Language Dictionary
57
RES:RANGe Channel-Specific Resistance Command/Query
Description
This command selects the full-scale resistance range of the electronic load. Programming
any value equal to or greater than zero (
≥
0) and less than or equal to (
≤
) the maximum
value of the lowest range automatically selects that range. Programming any value greater
than the minimum range and less than or equal to (
≤
) the maximum value of the middle
range automatically selects that range. There is no overlap between the low and middle
ranges. Programming a value greater than the maximum value of the middle range
automatically selects the highest range
Note
Whenever the electronic load changes resistance range, the input momentarily goes into
the OFF (minimum current) state.
The values of the input resistance (IMMediate, TRIGgered and TLEVel) are adjusted as
follows:
If Then
The existing resistance setting is The resistance value does not change.
within the new range.
The existing resistance value is The resistance is set to the closest limit of
not within the new range. the new range.
For example, assume the Agilent 6060A Electronic Load; is in the 10000-ohm range and
the input resistance (RES:LEV) is 2000 ohms. Switching to the 1000-ohm range will
reduce the resistance to the closest limit of that range, or 1000 ohms. However, if another
parameter (such as RES:TRIG) was already within the new range (e.g., 500 ohm), then it
will remain at that level in the new range. When switching between two ranges that
overlap, the accuracy of the programmed value may be compromised because of reduced
resolution when going from a lower to a higher range.
Command Syntax
RESistance:RANGe <NRf+>
Parameters
See Table 4-1 and the Operating Manual of the electronic load model.
Value Coupling
This command affects the following parameters:
RES:LEV RES:TLEV
Examples
RES:50 Set resistance 50 ohms.
RES:RANG 1; :TRIG 45E-3 Change range to 1 ohm and set Triggered resistance to 45
milliohms. The main resistance will drop to 1 ohm and remain there until a trigger occurs.
Query Syntax
RES:RANG?
RES:RANG? MAX RES:RANG? MIN
Returned Parameters
<NR3> RES:RANG? returns the present resistance range in ohms. RES:RANG?
MAX and RES:RANG? MIN return the maximum and minimum programmable ranges
for the electronic load.
Related Commands
RES:[LEV] RES:TRIG RES:TLEV