B&K Precision 9171-9174 - Manual - Manual (Page 69)

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3. The TRK annunciator will appear on the display to indicate
tracking mode is enabled. Both channels are now
synchronized.
3.7 Remote Sense
Single channel models 9171, 9172, 9181, 9182, and 9183 have both
front and rear panel remote sense terminals. Dual channel models
9173 and 9174, and high voltage single channel models 9184 and
9185 have rear panel remote sense terminals only. Remote sense
can be used to compensate for voltage drops due to resistance from
test leads connected to your device under test (DUT), thus providing
more accurate output voltage. The power supply is initially setup to
local sense mode by default. Refer to the following sections for
details of local and remote sense setup.
Local Sense
All power supplies are setup with local sense by default.In local
sense mode, shorting bars between the sense terminals and output
terminals are connected on the front panel (if available) and rear
panel outputs. Refer to Figure 16 below (Note: Some models do not
have front panel sense terminals, indicated by +S and -S):
TRK
CH1OFF
10 . 000 V 1 . 000 A
CH2OFF
10 . 000 V 1 . 000 A