Harris Legacy 99-1300-0, Operation & Technical Manual

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2 Installation
Revision B • 1/03
H A R R I S C O R P O R A T I O N
2-5
Master clocks are available from:
ESE
142 Sierra St.
El Segundo, CA 90245.
Telephone: 310.322.2136
www.ese-web.com
- + -
+ - +
Output 1 Output 2 B
la
n
k
Middle 12.25" Blank Panel
removed to show the
battery clip
12.25" Blank panel 12.25" Blank panel
Backup Battery Installation
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Clock Option Switches (DS1)
Clock circuit board DIP switch.
Factory default settings are DOWN.
12
3
4
5
SWITCH DOWN
12-hour
TC89
ESE Disabled
(Autonomous)
Unused
Unused
Clock PCA
SWITCH UP
24-hour
TC90
ESE Enabled
(Slaved)
Unused
Unused
2
Install the batteries into the battery clip,
observing the correct polarity marked on the
battery clip, as shown below.
Note: Replace batteries yearly to ensure con-
tinuous backup protection. Because this device is
optimized for continuous slow charge operation,
use Panasonic P-50AAH batteries (or their equiva-
lent). To prolong battery life, remove the batteries
when the console will be powered down for an
extended period.
SETTING THE CLOCK
The digital time-of-day clock can operate in au-
tonomous or slave modes. When used autono-
mously (the factory preset), a temperature-con-
trolled quartz crystal oscillator controls the clock
timing. In slave mode, clock timing comes from a
TC89- or TC90-compatible ESE master clock ref-
erence signal.
The operating mode (autonomous or ESE slave),
the type of ESE signal (TC89 or TC90), and the
type of clock time desired (12-hour or 24-hour
format) are set using DIP switch DS1 on the clock
PCA. DS1 is on the right rear edge of the circuit
board.
To access the clock PCA, open the meter panel.
The clock PCA is mounted behind the clock dis-
play on the meter panel.
With the clock set to autonomous mode, it must
be set after power-up. There are three clock set
buttons on the bottom left front of the clock PCA.
• Use the right button (Fast) to scroll by min-
utes at a time.
• Use the middle button (Slow) to scroll by
seconds at a time.
• Use the left button (Hold) to synchronize
the console clock to an external time refer-
ence by setting the clock ahead of the
Clock Circuit Board, left front edge
Setting the Clock
Hold Slow Fast