P3 - Analog Input Voltage Range (Facrory Setring: T0 Volrs); P4 - Analog Input Voltage Polarity (Facory Seuing: +/-); P5 - Dma Request Channel (Factory Setting: Disabled); P6 - Dma Acknowledge Channel (Factory Sening: Disabled) - Real Time Devices AD1200 User Manual

P3 - Analog Input Voltage Range (Factory Setting: 10 Votts)
This header connector, shown in Figure 1-2, sets the analog input voltage range for 10 or 20 volts. Note that if
the jumper is installed on 20V, then P4 can only be set for bipolar (+/-). The inpur ranges allowed by the 1200 are
15,110, and 0 to +10 volts.
Fig.1-2 - Analog
Range Jumper, P3
P4 - Analog Input Voltage Polarity (Factory Setting: +/-)
This header connector, shown in Figure 1-3, sets the analog input voltage polarity for unipolar (+) or bipolar
(+/-). Note that if the jumper on P3 is installed on 20V, then P4 can only be set for bipolar (+/). The inpur ranges
allowed by the 1200 are 15, +10, and 0 to +10 volts.
Fig. 1-3 -Analog Input Voltage Polarity Jumper, p4
P5 - DMA Request Channel (Factory Setting: Disabled)
This header connector, shown in Figure 14, lets you select channel 1 or 3 for DMA transfers. This line, the
DMA request line (DRQ), must be set to the same channel as the DACK line on P6. The factory setting is DMA
disabled (umper in a sored position). Note that if any other device in your system is already using your selected
DMA channel, channel contention will result, causing erratic operation.
DRQl
DR03
P5
Fig. 1-4 - DMA Request ChannelJumper,
p5
P6 - DMA Acknowledge Channel (Factory Setting: Disabled)
This header connector, shown in Figure l-5, lets you select channel I or 3 for DMA transfers. This line, the
DMA acknowledge line (DACK), must be set to the same channel as the DRQ line on p5. The factory setting is
DMA disabled (umper in a stored position). Note that if any other device in your system is already using your
selected DMA channel, channel contention will result, causing erratic operation.
P3
l-l
t a o l
t-l
c r o
N
Input Voltage
T 4