SA-3051/SA-3052 Operation Manual
Connector Pin Designations
The printer interface connector uses a DB25F connector. The connector wiring is the same as that used by
PC-type computers so you can use any standard PC printer cable to connect the SA-3052 to your printer.
The connector pin designations are shown in Figure 3.2.
Figure 3.2. Parallel Interface Signals and Pin Assignments.
Battery Operation
A standard battery package allows the SA-3052 to be operated without connection to the AC mains supply.
The battery supply has sufficient capacity to operate the SA-3052 continuously for 3 to 4 hours. The bat
-
tery package uses a sealed gel-cel, lead-acid battery pack.
An integral battery charger operates when the SA-3052 is plugged into the AC mains supply. The instru-
ment must be turned off to charge the battery.
Charging the Internal Battery Pack
1. Plug the SA-3052 into a suitable source of AC power.
2. Set the front panel
p
owEr
switch to
o
ff
.
3. Leave the SA-3052 for a period of 8 to 10 hours (twice the discharge time).
4. The battery charger automatically adjusts the rate of charge as the battery reaches full charge. The
p
owEr
/C
hargE
LED will glow red then flash slowly when a full charge is reached. Once this occurs,
the battery charger switches to trickle-charge mode to maintain the battery at full charge. Operating the
SA-3052 on AC power will eventually discharge the battery.
Getting the Most From Your Battery Pack.
The SA-3052 uses a sealed, lead-acid storage battery. These batteries are not of the Nickel-Cadmium
type commonly used for rechargeable applications. Lead-acid batteries offer some significant advantages
over NiCad batteries.
• Given proper charging and discharge depth, the batteries should deliver 1000 to 2000 charge/dis-
charge cycles (4-5 years of normal operation).
• Lead-Acid cells do not have memory effects from partial discharging or charging.
• Higher energy density. The lead-acid design delivers more energy per unit volume than NiCad
battery systems.
• Lead-acid batteries can be charged in less time than NiCads.
• Wider temperature range: -65 degrees Celsius to +65 degrees Celsius.
3-4
