User`s guide

Additional Imaging Modes 7
Agilent 5500 SPM User’s Guide 115
available with three different preamplifiers for varying sensitivity
(Table 2).
Figure 80 STM nose assembly
A dedicated STM scanner (Figure 81) provides lower current operation
and higher resolution. The scanner is available with three preamplifier
options for varying sensitivity (see Table 2). The color-coded preamp,
Table 2 STM nose assembly and scanner sensitivities
Color Red Blue Green
Sensitivity 10 nA/v 1 nA/V 0.1 nA/V
Bandwidth 20 kHz 6.3 kHz 2 kHz
Test Resistor
10 G
 1 G 100 M