Section 3: Model 9100 Controls: Working with Front Panel Controls — Tutorials 3-57
Final Width = 215mm
3.4.7.4 Resolutions — Crossing Thresholds
Increasing Output Voltage
When increasing output or offset value using the
(increment) key in Digit Edit
facility; if the new value is too large for the present span of values, then an audible
warning will be given, with a reminder on the screen. The operator must change to the
next lower resolution using the
key. The next lower resolution will be activated
with a larger span of values. This rule applies whether OUTPUT is OFF or ON.
When increasing output or offset value using either the X10 screen key or the Direct Edit
facility; if the new value is too large for the present resolution, then the appropriate lower
resolution will be activated with a larger span of values. No warning will be given. This
rule applies whether OUTPUT is OFF or ON.
Decreasing Output Voltage
When decreasing output or offset value using Digit Edit; positive and negative values
down to zero can be obtained within the present span. However, if the required value lies
between increments of the present resolution, then the user must increase the resolution,
also reducing the value span. This rule applies whether OUTPUT is OFF or ON.
When decreasing output or offset value using either the ÷10 screen key or the Direct Edit
facility; if the required value lies between increments of the present resolution, then the
appropriate greater resolution will be activated with reduced span. No warning will be
given. This rule applies whether OUTPUT is OFF or ON.
3.4.7.5 Reconfiguring Hardware
Output OFF
When increasing or decreasing output voltage, using any method: if the new value is too
large or small for the present hardware configuration, then if OUTPUT is OFF there will
be no noticeable effect as the hardware reconfigures.
Output ON
If OUTPUT is ON, it will be temporarily turned OFF so that the hardware can
reconfigure, then ON again at the new voltage. No warning will be given. This
interruption should cause little disturbance to the reading on any UUT.
3.4.7.6 DC Voltage Function — Low and High Voltage States
Our example is given in terms of DC Voltage function, which incorporates a safety
measure to avoid inadvertent application of high voltages to the output terminals (also
incorporated in AC Voltage function). Rules, built into firmware, govern transit between
Low and High Voltage states. These rules are discussed in Sections 4.3 and 4.4.
To Next Page
Loading...
