User Manual
RedLab 1208LS User's Guide  Specifications 
27 
Table 1. Accuracy, differential mode 
Range Accuracy (LSB) 
±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 
Table 2. Accuracy, single-ended mode 
Range Accuracy (LSB) 
±10 V  4.0 
Table 3. Accuracy components, differential mode - all values are (±) 
Range  % of Reading  Gain Error at FS 
(mV) 
Offset (mV)  Accuracy at FS (mV) 
±20 V   0.2 40  9.766  49.766 
±10 V  0.2  20  9.766  29.766 
±5 V  0.2  10  9.766  19.766 
±4 V  0.2  8  9.766  17.766 
±2.5 V  0.2  5  9.766  14.766 
±2 V  0.2  4  9.766  13.766 
±1.25 V  0.2  2.5  9.766  12.266 
±1 V  0.2  2  9.766  11.766 
Table 4. Accuracy components, single-ended mode - all values are (±) 
Range  % of Reading  Gain Error at FS 
(mV) 
Offset (mV)  Accuracy at FS (mV) 
±10 V   0.2 20  19.531  39.531 
Analog output 
Parameter Conditions Specification 
D/A converter type    PWM 
Resolution    10-bits, 1 in 1024 
Maximum output range    0 -5 Volts 
Number of channels    2 voltage output 
Throughput Software paced 100 S/s single channel mode 
50 S/s dual channel mode 
Power on and reset voltage    Initializes to 000h code 
No load  Vs 
1 mA load  0.99 * Vs 
Maximum voltage (Note 3) 
5 mA load  0.98 * Vs 
Output drive  Each D/A OUT  30 mA 
Slew rate    0.14 V/mS typ 
Note 3: Vs is the USB bus +5V power.  The maximum analog output voltage is equal to Vs at no-load. V is 
system dependent and may be less than 5 volts. 










