Metrohm 791 VA Detector - Manual (Page 30)

3 Operation
791 VA Detector
24
Damping
damp The damping is switched on and off using commutator 4 (see
Fig. 1).
Button depressed
Signal damped for all ranges set on adjusting knob 8 in or-
der to suppress interference (spurious signals).
Button not depressed
No signal damping (exception: the most sensitive range,
0.1 nA, is always damped to some extent).
Multiplication of I
comp
abs. by a factor of 5
x5 For this changeover commutator 5 (see Fig. 1) is used.
Button depressed
Multiplication of the absolute compensation current by a
factor of 5.
Button not depressed
No multiplication of the absolute compensation current.
Multiplication of I
comp
abs. by a factor of 50
x50 For this changeover commutator 6 (see Fig. 1) is used.
Button depressed
Multiplication of the absolute compensation current by a
factor of 50.
Button not depressed
No multiplication of the absolute compensation current.
Polarity of I
comp
abs.
+ For this changeover commutator 7 (see Fig. 1) is used.
Button depressed
All current values set on the potentiometer 9 have a positive
sign.
Button not depressed
All current values set on the potentiometer 9 have a nega-
tive sign.