Power supply
7. POWER SUPPLY
Power can be supplied to the simulator in any of the following ways :
3 AA alkaline batteries, in the device
Mains adapter 12 V, 0.2 A, with ALMEMO
®
connector
ZA1312NA1
External DC voltage, 10 to 30 V via ALMEMO
®
connector
ZA1000FSV
Supply and RS422 network connection via ALMEMO
®
connector
ZA5099FSV
Supply and USB connection via ALMEMO
®
data cable
ZA1919DKUV
7.1 Battery operation and supply voltage monitoring
The measuring instrument is powered by 3 AA alkaline batteries. Basic current
consumption is approx. 30 mA; this will give an operating time of approx. 70
hours. If the display illumination is left switched on, this operating time will be
reduced to approx. 30 hours. If the current output is often used the batteries
may last as little as 15 hours. The available operating voltage is displayed in
the device configuration (see 9.4), thus allowing you to assess the remaining
operating time. As soon as the remaining battery capacity drops to approx.
10%, the battery symbol
´´µµµµµµµµµ¶
in the softkey bar of the displays will start to
flash and display illumination is switched off. If the batteries are completely dis-
charged the device itself will switch off. To replace old batteries unscrew the
battery compartment cover (6) on the rear of the device.
To save on battery use when in battery mode the electrically isolated
current / voltage signals P1 and P2, so long as they are not selected,
are switched off.
7.2 External power supply
Via the simulator it is also possible to draw power from an external source -
preferably using mains adapter ZA1312NA1 (12 V / 0.2 A) connected via the DC
socket (3). Please ensure that the mains voltage is correct. At this socket it is
also possible, via an ALMEMO
®
connector (ZA1000FSV) to connect a DC volt-
age from 9 to 12 V (minimum 0.2 A). Another interesting possibility is the com-
bined connection of power supply and interface to the ALMEMO
®
network via
ALMEMO
®
connector ZA5099FSV or to a USB interface via ALMEMO
®
cable ZA
1919-DKUV.
With an external supply all outputs can be used simultaneously.
7.3 Switching ON / OFF, reinitialization
To switch the device ON briefly press and release the key
ON
(5) in the middle
of the keypad; to switch the device OFF press the key
ON
and hold down. If
interference (e.g. electrostatic) or a malfunction (e.g. battery failure) causes the
device to behave abnormally, it can be reinitialized; to do so press key
F2 .
when switching on. This will restore all settings to the factory default status.
ALMEMO
®
KA7531
7
