SCHOEPS VMS 5 U - Manual (Page 17)

ca. 7 hours (1600 mAh NiMH)
ca. 12 hours (3400 mAh gelled lead acid bat-
tery (external))
A voltage indicator displays the battery voltage
within the unit.
A warning LED will begin to blink if the voltage
falls beneath a critical value (time remaining
at that point with most higher-capacity
rechargeable batteries: at least 10 minutes).
The unit will shut itself off automatically to help
prevent damage from draining the batteries
completely.
External powering
An appropriate AC power adapter is available
(model VMS 5 DC). Other adapters offering a
regulated output voltage of 6 Volts DC (at
500 mA) to 15 Volts DC (at 250 mA) can also
be used. Under no circumstances should an
open-circuit voltage of 16 V be exceeded;
otherwise a fuse inside the VMS 5 U will
blow. (See page 7.)
Coaxial socket, 5.5/2.1 mm diameter
Reverse polarity will not damage the unit,
though it will not operate.
If external powering is present, any internal bat-
teries are automatically disconnected (indicated
by yellow LED “EXT.”). This protects the bat-
teries from being discharged unintentionally.
The battery voltage indicator displays the level of
any external powering.
External powering with outboard rechargeable
battery: nominal 6 – 12 V; we recommend
gelled lead-acid batteries (6 V, 3400 mAh
type = 12 hours of operation).
Parallel operation of a VMS 5 U along with one
or more other pieces of equipment from a
single power supply is generally possible,
because of the internal voltage regulation.
Robust, black aluminum case.
Overall measurements: (W
× H × D):
162 mm
× 60 mm × 172 mm
(approximately 6-2/3” Ч 2-1/3” Ч 6-3/4”)
Weight (with batteries): 1.1 kg (approximately 2
lb. 7 oz.)
These specifications are subject to revision and
correction with out notice.
17