Bowens Esprit 250 Operating Instructions.
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5.
Power Supply Connections
240V AC 50Hz
Use mains lead supplied to connect to mains supply.
6.
Mains On/Off Switch
The green illuminated On/Off switch (Fig.1. 4) on the rear panel controls the
power to both the flash and the modelling lamp. Setting the switch to 1 turns
the unit ON and 0 turns the unit OFF.
7.
Flash Power Selection
The flash power output is variable over two f stops from full to one quarter
(1/4) power. The full stored energy of 250 Watt Seconds (joules) gives a guide
number of 60 using a 50
°
Keylite reflector and 100 ISO film. Half and quarter
power settings are marked on the panel by round dots and figures.
Rotating the control (Fig.2. 2) from full to half and half to quarter, gives a
reduction in output equivalent to 1 f stop for each step.
8. Charge
When first switched ‘ON’ the green illuminated ON/OFF switch (Fig.1. 4)
will light. When the unit has charged to the level set by the flash power
selector (Fig.2. 2) the green ready LED (Fig.2. 3) will light. Your Esprit 250 is
now ready to fire.
Note
:- The Esprit 250 synchronising circuit is inhibited until the unit is 100%
charged, unlike some other manufacturer's equipment that can be fired when
only 80% charged. This ensures that every flash is identical.
9. Synchronisation
Open Flash: For testing or multiple flash applications the Open Flash
Pushbutton (Fig.2. 5) can be used. The Esprit has a built in photocell enabling
the unit to be triggered by the flash from any other flash unit or a small camera
mounted flash gun. The photocell is mounted behind the red transparent cover
on the top of the Esprit.
Sync Socket: The standard quarter inch jack type socket on the rear panel of
the unit (Fig.1. 1) may be used for direct connection to a camera set to ‘x’
synchronisation. Two Esprit 250 flash units may be connected together using a
‘y’ connector. An Infra Red Receiver or Omnicell may also be plugged into
this socket.
10. Modelling Lamp Control
With the modelling lamp control switch (Fig.1. 5) in the central position the
modelling light is OFF. With the switch set to ‘Intermittent’ the modelling
light will go out when the unit is flashed and come back on when the unit
comes to ready. This enables the photographer to see from the camera position
that all Esprit units in use have fired. With the switch set to ‘Continuous’ the
modelling light remains on all the time. The modelling light may be varied in
ratio with the flash power output by aligning the indicator line on the
modelling output control knob (Fig.2. 6) with that of the flash control (Fig.2.
2).