Analog Output - Measurement Computing USB-1208LS User Manual

USB-1208LS User's Guide
Range
±20 V 5.1
±10 V 6.1
±5 V 8.1
±4 V 9.1
±2.5 V 12.1
±2 V 14.1
±1.25 V 20.1
±1 V 24.1
Range
±10 V 4.0
Table 4. Accuracy components, differential mode – all values are (±)
Range % of Reading
±20 V 0.2
±10 V 0.2
±5 V 0.2
±4 V 0.2
±2.5 V 0.2
±2 V 0.2
±1.25 V 0.2
±1 V 0.2
Table 5. Accuracy components, single-ended mode – all values are (±)
Range % of Reading
±10 V 0.2

Analog output

Parameter
D/A converter type
Resolution
Maximum output range
Number of channels
Throughput
Power on and reset voltage
Maximum voltage (Note 3)
Output current drive
Slew rate
Vs is the USB bus +5V power. The maximum analog output voltage is equal to Vs at no-load. V is
Note 3:
system-dependent and may be less than 5 volts.
Table 2. Accuracy, differential mode
Accuracy (LSB)
Table 3. Accuracy, single-ended mode
Accuracy (LSB)
Gain Error at FS
(mV)
40
20
10
8
5
4
2.5
2
Gain Error at FS
(mV)
20
Table 6. Analog output specifications
Conditions
Software paced
No load
1 mA load
5 mA load
Each D/A OUT
Offset (mV)
9.766
9.766
9.766
9.766
9.766
9.766
9.766
9.766
Offset (mV)
19.531
Specification
PWM
10-bits, 1 in 1024
0 V to 5 V
2
100 S/s single-channel mode
50 S/s dual-channel mode
Initializes to 000h code
Vs
0.99 * Vs
0.98 * Vs
30 mA
0.14 V/ms typ
19
Specifications
Accuracy at FS (mV)
49.766
29.766
19.766
17.766
14.766
13.766
12.266
11.766
Accuracy at FS (mV)
39.531