CN0170 HARDWARE MANUAL
SERIAL CABLE:
The user may order a serial cable from Centent if his system will require a
single CN0170. This cable has the necessary jumpers built in for
andshaking with an IBM PC compatible computer.
ith a 25-pin serial interface
onnector to two daisy-chained CN0170s.
h
If more than one CN0170 is to be connected together, the user must
fabricate his own serial cable. Figure 18 shows a typical connection
diagram connecting a host computer w
c
Figure 18, D25 RS232 connections
e
iagram in Figure 19.
lete
the serial interface.
If the host computer
has a 9 pin serial
connector, refer to th
d
A D9 to D25 (female)
cable must be
fabricated to comp
Figure 19, D9 RS232 connections
the
N0170 is powered down. This equates to at least a year of battery life.
y
oltage. Any evidence of battery leakage requires immediate replacement.
BATTERY REPLACEMENT:
The CN0170 uses two AAA alkaline batteries for data retention in the
CMOS static memory. The current consumption is about 20
μ
A when
C
Battery replacement is indicated when battery voltage is less than 2.8
volts. Replacement is suggested on a yearly schedule regardless of batter
v
20
Summary of Contents for CN0170
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