Campbell Scientific SDM-AO4A Four Channel Analog Output Module - Manual (Page 5)

SDM-AO4A Four Channel Analog
Output
1. Function
The SDM-AO4A is designed to output four continuous voltages at levels set
by a Campbell Scientific datalogger.
The SDM-AO4A is a replacement for the SDM-AO4. However, the SDM-
AO4A offers several new features including a 0-10 V Mode, a choice of
synchronous or sequential operation, and SDM signature checking. In
addition, the SDM-AO4A has higher resolution, improved accuracy, and high
drive current for sensor excitation.
2. Specifications
± 5 V mode 10 V mode
Vsupply 12 V Nominal (9.6 to 16 V)
Iq (no load, Vout = 0, Vsupply = 12 V) 11 mA typical 21 mA typical
Iq (no load, Vout = Fullscale, Vsupply = 12 V) 13 mA typical 28 mA typical
Iq (w/ load, Vsupply = 12 V) 13 mA + load typical 28 mA + 2.4*load typical
Iq (power down mode, Vsupply = 12 V) 1.1 mA typical
Range ± 5 V 0-10 V
Resolution 167 µV
Accuracy @ 25°C (20 kOhm load) ± (0.05% of |Vout(V)| + 500 µV) max
Accuracy @ -40° to 60°C (20 kOhm load) ± (0.1% of |Vout(V)| + 500 µV) max
Additional Fullscale Error w/ 50 mA load -1.3 mV typical -1.5 mV typical
Max Iout per Channel 50 mA
Max Iout Total 100 mA
Overcurrent shutdown point 130 ± 15 mA
Size 5.3" x 3.35" x 0.95" (13.46 x 8.51 x 2.41 cm)
Weight 6.2 oz (175 grams)
Operating Temperature Range -40° to +60°C
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