ADLINK PCM-9112+ - Manual (Page 4)

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2.5.1 Analog input mode configuration
The analog input channels on the PCM-9112+ DAQ module can be configured as 16 single-ended
or 8 differential inputs. Jumpers JP1 and JP4 control the analog input configuration. The setting of
JP1 and JP4 are specified below:
Analog Input Setting
Single-ended
input (Default)
Differential input
Table 3: Analog input mode configurations
2.5.2 Clock Source Setting
The programmable 8254-interval timer is used in the PCM-9112+. It provides 3 independent 16-bit
programmable down counters. Input of counter 2 is connected to an accurate 2MHz oscillator used
as the internal pacer. Input of counter 1 is cascaded from the output of counter 2. Channel 0 is
free for user applications. There are two selections for the clock source of channel 0: the internal
2MHz clock or an external clock signal. The setting for clock signal is shown in the following table.
Clock source setting
Internal Clock
Source: 2MHz
(default)
External Clock
Source
Table 4: Clock source setting