External Clock I/O - Measurement Computing USB-1608G-OEM User Manual

USB-1608G-OEM User's Guide
Figure 4 shows DIFF channels 0-3 connected to a ground path resistor.
Channel-Gain queue
The channel-gain queue feature allows you to configure a list of channels, modes, and gains for each scan. The
settings are stored in a channel-gain queue list that is written to local memory on the device.
The channel-gain queue list contains one or more channel numbers, modes, and range settings. You can
configure up to 16 elements. The channels can be listed in any order, and can include duplicate channels for
sampling at different ranges.
An example of a 4-element list is shown in the table below.
Carefully match the gain to the expected voltage range on the associated channel or an over range condition
may occur. Although this condition does not damage the device, it does produce a useless full-scale reading,
and can introduce a long recovery time due to saturation of the input channel.
For more information about analog signal connections
For more information about analog input connections, refer to the Guide to Signal Connections (this document
is available on our web site at www.mccdaq.com/signals/signals.pdf).

External clock I/O

The USB-1608G-OEM provides one external clock input (
analog inputs. You can connect an external clock signal to

When using an external clock,

When using the internal clock,
Figure 4. DIFF connections with ground path resistor
Sample channel gain queue list
Element Channel
0 CH5
1 CH1
2 CH15
3 CH5
outputs the pulse generated from
AICKO
outputs the ADC scan clock
AICKO
Range Mode
BIP5V SE
BIP10V SE
BIP1V SE
BIP5V SE
) and one external clock output (
AICKI
and/or
AICKI AOCKI
AICKI
13
Functional Details
) for
AICKO
.
.