Getting Started  1
U1241B/U1242B User’s and Service Guide  9
The Input Terminal at a Glance
Figure 1-5 Input terminal of a U1242B handheld digital multimeter
Table 1-6 Terminal connections for different measuring functions
To avoid damaging this device, do not exceed the input limit. 
Measurement 
Functions
Input terminal Overload Protection
Voltage
COM
 1000 V R.M.S.
Diode 1000 V R.M.S
Resistance < 0.3 A short circuit current
Capacitance
μA & mA μA mA COM 440 mA/1000 V 30 kA/fast-acting 
fuse
A ACOM11 A/1000 V 30 kA/fast-acting 
fuse
Te m p e r a t u r e   +T1 –T1  1000 V R.M.S.
Temperature (for 
U1242B only)
+T2 –T2 440 mA/1000 V 30 kA/fast-acting 
fuse