3M 965AMS User Manual

Voltage (DC) 

0 to 99.9 V 
100 to 300 V 

0.1 V 
1 V

1% ± 0.5 V 
3%

Voltage (AC) 
Meter resistance 
100 k or 1 m 

0 to 99.9 V 
100 to 250 V 

0.1 V 
1 V

1% ± 0.5 V 
3% 

Current
 
Shunt resistance

0 to 59.9 mA 
60 to 110 mA 
430 Ω 

0.1 mA 
0.1 mA 

1% ± 0.3 mA 
2% 

Resistance 
With CO voltage 

0 to 9999 Ω 
0 to 9999 Ω 
10 k to 99.9 kΩ 
100 k to 999 kΩ 
1 M to 9.9 MΩ 
10 M to 99 MΩ 
100 M to 990 MΩ 

1 Ω 
1 Ω 
0.1 kΩ 
1 kΩ 
10 kΩ 
0.1 MΩ 
1 MΩ 

1% ± 5 Ω
1% ± 50 Ω
1% 
3% 
3% 
5% 
10% 

Opens (no noise) 

0 to 3,000 ft  
(0 to 1,000 m) 
3,000 to 10,000 ft  
(1 km to 3 km) 
10,000 to 50,000 ft 
(3 km to 15 km) 
50,000 to 100,000 ft (15 
km to 30 km) 

1 ft (1 m) 
 
1 ft (1 m) 
 
10 ft (10 m) 
 
100 ft (100 m) 

1% ± 3 ft (1 m)  

3% 
 
5% 
 
10% 

RFL 
Fault range 
Resistance to 
Fault (no noise) 

0 to 20 MΩ 
0 to 99.99 Ω 
100 to 999.9 Ω 
1 k to 3 kΩ 

— 
RTS 0.01 Ω
RTS 0.1 Ω
RTS 1.0 Ω

— 
0.1% of RTS ± 0.01 Ω

1

0.2% of RTS ± 0.01 Ω

1

1.0% of RTS ± 0.01 Ω

1

Wet section test 
Loop resistance Resistive 
balance 

0 to 7 kΩ 
0 to 3.5 kΩ 

—
—

—
5% 

Loop resistance 

0 to 99.9 Ω 
100 to 999.9 Ω 
1000 to 7000 Ω 

0.01 Ω 
0.1 Ω 
1 Ω 

0.1% ± 0.01 Ω 
0.2% ± 0.01 Ω 
1.0% ± 0.01 Ω 

Resistance difference 

0 to 99.99 Ω 

0.01 Ω 

1% of loop resistance 
± 0.01 Ω