Operator`s manual

F
51 Signametrics
igure 4-16. Generating AC voltage. Monitoring of the output in closed loop operation.
4.15.3 DC Current Source
nt source, use the Trim DAC. It has to be set separately, since it is not included
rol software. Use
DMMSetTrimDAC
The SM2064 has a fully isolated unipolar DC current source with five ranges. It uses the 12-bit DAC to control
current level. This source function is useful for parametric component measurements as well as for system
verification and calibration, where a precise DC current is necessary to calibrate current sensing components.
For improved resolution of the curre
in the calibration record, or the cont
() command with a parameter of 0 to 100.
o wire connection, where the current source terminals also serve as voltage sense
robes as in the 2-wire Ohms measurement configuration. The first method eliminates lead resistance errors. One
Source
Further details are in Chapter 6.
4.15.4 Source Current - Measure Voltage
When sourcing current and measuring voltage, there are two connection configurations: 1) Four wire connection,
where the current sourcing terminals and the voltage sense terminals are connected to the load, as in 4-wire Ohms
measurement function; and 2) Tw
p
application is in semiconductor diode characterization discussed in Component Testing above. See Current
Output for range details. Voltage compliance is limited to 4 V in both configurations.
Figure 4-15. Sourcing DC current and measuring voltage in
be used for sem ametric tes
4.16 Interfacing to the SM4040 series Relay Scanners
The SM2060 series of Digital Multimeters are
following section describes both, the hardwar
synchronized operation.
4.16.1 Triggering the SM2
The SM2060 seri hardware trig cluding the SM4000 scanners. The latter
can be setup to tr ment any tim channel. The interface requires a single
jumper between t g_com and C etween the SM4000 +5V and
TRIG_out to the r inputs. The erations can run independently
from the computer, whereby the Scanner selec List table, and the DMM is triggered to take
measurements fo annel selectio
the two-wire configuration. This function can
ts. iconductor par
designed to interface to the SM4000 series relay scanners. The
e interface and the software functions required to implement a
060 DMM’s
es can accept a
igger a measure
ger from many sources, in
e the scanner selects a new
he SM4000 Tri
SM2060 Trigge
ommon lines, and a connection b
various SM4000 auto-scanning op
ts channels from its Scan
n. llowing each ch