oConnor 120EX, Руководство оператора

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CAMERA WEIGHT
in mm
lbs
kg
min. 90º 80º 70º 60º
COUNTERBALANCE
± º
EX MODE
120EX
C
A
M
E
R
A
C
E
N
T
E
R
O
F
G
R
A
V
IT
Y
A
B
O
V
E
P
L
A
T
F
O
R
M
±90° MODE
Balancing The Head
Make sure that the head is level before balancing. Check the bubble level to verify
that the head itself is level and make sure that the platform is also level.
NOTE: It is important that the handle(s) and all camera accessories (lens, zoom and
focus controls, viewfinder, prompter etc.) are fitted in their operational position before
balancing the head. Any equipment fitted or adjusted later can unbalance the head.
Balancing the 120EX head achieves two objectives. First, when a head is correctly
balanced the operator will need a minimum amount of effort to move the head.
Second, once balanced, the head and its payload can be set to any tilt position and
the head will maintain this position with 'hands off'.
The chart below shows the range of load and C of G heights that can be maintained
in balance. The area between the min. and 90° lines (shaded white) corresponds to
load/C of G combinations that can be balanced over the full tilt range of ±90°. The
area to the right of the 90° line (shaded grey) corresponds to the progressively
reducing tilt range with greater load and higher C of G combinations.
Fore And Aft Balance
1. When positioning the payload, it is important to be aware of the potential
danger that an unbalanced payload will fall away suddenly. Always be prepared
for this by maintaining a firm hold on the payload until the balance is set
correctly.
2. Make sure that the camera and all accessories are installed in their operating
positions.
3. Before disengaging the tilt lock pin, press the Display actuator button and press
and turn the Counterbalance crank to set the counterbalance to 50%.
Depending on the payload weight, it may be necessary to increase or decrease
this setting to enable the payload to be correctly balanced fore and aft.
Operator's Guide - OConnor 120EX Pan and Tilt Head
www.ocon.com OConnor Engineering