DC Voltage
Ranges : 1, 10, 100, 1000V
Accuracy : ±(0,1 % + 1 digit)
Input Resistance : 10MW
Input Protection : ±1100V
AC and AC+DC Voltage
Ranges : 1, 10, 100, 500V
Accuracy (TRMS) :
1, 10V : ± (0,2% + 3 digits) 40Hz - 3kHz and DC
± (1% + 3 digits) 20Hz - 40Hz and 3kHz - 20kHz
± (5% + 3 digits) 20kHz - 100kHz
100V, 500V : ± (0,2% + 3 digits) 40Hz - 1kHz and DC
± (1% + 3 digits) 20Hz - 40Hz and 1kHz - 3kHz
Input Impedance : 1MW // 100pF
Input Protection : 750V crest
dBV display : from -40.00 to +54.00dBV
0 dBV = 1V
Accuracy : same as value expressed in Voltage
Current
Ranges : 10mA, 1A, 20A
Input Protection : 10mA and 1A by fuse
Accuracy (DC) : ±(0,2% + 2 digits)
(alternatif) : ±(0,5% + 3 digits) 40Hz - 3kHz and DC
± (1% + 3 digits) 20Hz - 40Hz and 400Hz - 3kHz

Diode test
Current 400μA Voltage 0 to 10V

Resistance
Ranges : 1, 10, 100kW, 10, 50MW
Accuracy : 1kW à 10MW : ±(0,1 % + 2 digits)
50MW : ±(0,5 % + 5 digits)
Input Protection : 380Veff max.

Frequency
Autoranging. Measures Voltage or current
Frequency range : 5Hz to 400kHz
Resolution : 4 digits from 5Hz to 400kHz
Accuracy: ± 1 digit
Security: CEI 1010-1 Cat III 600V,Cat II 1000V
Interface : RS232 (3 wires). Xon-Xoff Protocol.
Baud rate : 1200/9600 Bauds
All functions and ranges programmable.
Power : 230 V 50-60Hz, max. 7W
Dimensions : 240 x 240 x 75 mm (L xW x H)
Weight : about 1,3kg
Misc. : 4 digits LED 25 mm high Display plus sign
Beeper indicated overload.

Versions : ISM 1000 : 4digits multimeter

ISM 1000-RS : RS 232 programmable
ISM 1000-USB : USB programmable