Kinetic Systems Corporation Standardized Data Acquisition and Control Systems 3116
16-channel, 16-bit D/A Converter

FEATURES

Sixteen independent analog outputs
+/-10 volt output
16-bit resolution (one part in 65536)
12 milliampere drive capability
Low drift
Single Gain and Offset adjustments
2-pole Bessel output filter on each channel
Power-on reset to zero volts

GENERAL DESCRIPTION

The Model 3116 is a single-width CAMAC module with 16 differential output voltage channels. The max- imum output of each channel of the 3116 is rated at +/- 10 volts, at a maximum 12 milliamperes. Output signal levels can be resolved to 16 bits (one part in 65536) with better than 14-bit accuracy. The settling time for a 20 volt output step is 2 milliseconds. Data values for each channel are written to a 16-bit wide, 16-word dual-ported memory. The memory is sequentially scanned, and the values are applied to a single, 16-bit Digital-to-Analog converter circuit. The DAC output is then multiplexed to 16 high-precision sample-and-hold circuits, the outputs of which are fed through a 2-pole, active low-pass Bessel filter before being brought to the front panel connector. Since the voltage outputs of all circuits are accurate to within 500 uV, only one Gain and one Offset potentiometer are needed to adjust the DAC. All channels are updated every 2.3 ms. The nominal cutoff frequency of each filter is set at 400 Hz. Based on the position of an on-board strap option, data may be written and read in either offset binary or two's complement format. During power-on, the module goes into a sequence of zeroing the memory con- tents. This sequence lasts approximately 50 microseconds, and any attempt to read or write the memory during this time results in a Q = 0 response. The output signals are available at a 36-contact, high-density rectangular connector on the module's front panel. This connector mates directly with Kinetic Systems' Model 5944 connector and Model 5855-Series of cable assemblies. The 3116 front panel also contains an N LED which flashes whenever the module is addressed.

FUNCTION CODES
Command		Q	Action
F(0) A(i)	RD1	1	Reads the data memory contents for channel i.
F(16) A(i)	WT1	1	Writes the data memory contents for channel i.
Notes: i can range from 0 to 15 for channels 1 to 16. X = 1 for all valid addressed commands. Q = 0 during power-on initialization sequence.

Specifications

Item	Specification
Number of channels	16 differential pairs
Full-scale output	-10 volts to +10 volts
Resolution	16 bits (one part in 65536)
Linearity error Monotonicity	Monotonic to 14 bits
Absolute accuracy	500 uV typical
Channel tracking	500 uV typical
Output impedance	0.10
Output current	+/- 12 milliamperes
Output protection	Can withstand short circuit to ground
Settling Time	2 milliseconds to 0.003% of Full Scale for a 20 volt change
Channel latency for voltage change	2.3 ms
POWER REQUIREMENTS
+6 volts -- 700 mA
+24 volts -- 75 mA
-24 volts -- 75 mA
Weight:	.63 kg. (1 lb. 4 oz.)