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OHM™ LIGHT USER MANUAL

Additional Safety Considerations

1)

Do not open OHM when the fixture is powered.

2)

Allow OHM to cool before servicing, as internal parts may be hot.

3)

Do not alter the design of OHM or tamper with any of the safety features.

4)

Do not look directly into OHM's bare light source as it may be harmful to the eyes.

5)

OHM reaches a maximum surface temperature of 85ºC. Please ensure contact on the surface by persons or 
materials is avoided when the fixture is operating.

6)

Do not operate OHM if there are any signs of physical damage. In case of damage, it is advised that you contact 
PRG service.

7)

Before using OHM check for any of the following defects:

Cleaning

1)

Clean optical front plate with suitable alcohol-based cleaner.

Power Supply

1)

Ensure the power cable is disconnected before servicing.

2)

OHM only uses a mains connection. Do not connect to a variable supply, such as a dimmer rack or inverter.

3)

The power cable should be plugged into OHM before switching the mains power supply ON. The mains power 
supply should be switched OFF before removing the power cable.

Note:  

OHM has been built to conform to International regulatory standards relating to professional lighting 

equipment. Any modification made to OHM will void the manufacturers' warranty.

 

PART 

POSSIBLE DEFECT

Optics 

Physical damage, dull, burnt out

Power Cable 

Physical damage, cut, burnt

Locking Handle 

Physical damage, loose

Spigot/Lifting Eye 

Physical damage, loose, crack/split

Hanger Assembly 

Physical damage, loose lifting eye

Hanger Assembly - 
Cables/Carabiners 

Physical damage, cut, frayed, carabiners loose or deformed

Safety Cable/s 

Physical damage, cut,

Ventilation 

Physical damage, covered

MMI 

Physical damage, unrecognizable screen

Yoke 

Physical damage, loose

Casing 

Physical damage

Summary of Contents for OHM LIGHT

Page 1: ...SOFTWARE VERSION 1 12 WWW PRG COM OHM LIGHT USER MANUAL...

Page 2: ...trademarks or registered trademarks of their respective companies This manual is for informational use only and is subject to change without notice Please check www prg com for the latest version PRG...

Page 3: ...ead the correlated color temperature CCT of OHM and other discontinuous spectrum light sources Color meters in use today are designed for a full spectrum source such as incandescent lights These meter...

Page 4: ...ory Skirts 10 Operation Connection Ports 11 DMX Connections 11 MMI Controls 11 Functions 11 Default Control Screen 12 Navigation Through 1st Level Menus 13 Navigation Within Color CCT Menu 14 Navigati...

Page 5: ...MMI 1 12 Driver Board 1 08 Familiarizing yourself with this information will help you get the most out of your PRG product Additional Documentation For more information regarding DMX512 systems refer...

Page 6: ...rmation for all PRG office locations can be found on our website at www prg com about us locations PRG Dallas International Service 8617 Ambassador Row Suite 120 Dallas Texas 75247 USA Phone 214 630 1...

Page 7: ...ctly attached to OHM before rigging 4 Always use a suitable length safety cable s when hanging OHM Safety cables are not provided The length should be as short as possible to reduce travel distance if...

Page 8: ...is disconnected before servicing 2 OHM only uses a mains connection Do not connect to a variable supply such as a dimmer rack or inverter 3 The power cable should be plugged into OHM before switching...

Page 9: ...Light can be controlled via the MMI Man Machine Interface attached to the side of the fixture or via an external DMX512 that can communicate with the fixture through a control port located on the loc...

Page 10: ...Fixture 757 300110 PRG OHM Hanger Assembly Four Cables Included Mounting and Suspension 757 300465 PRG OHM Spigot 28mm Anti Rotate w Screw 757 300470 PRG OHM Lifting Eye M12 757 300610 PRG OHM Hanger...

Page 11: ...Slots MUST be used to attach safety cable s by looping through as shown 2 3 1 NOTE tighten M12 bolt to 85Nm 63lbft Use minimum 8 8 grade bolt 3 2 1 Safe Rigging of the Hanger Assembly ensure the four...

Page 12: ...mping device using slotted screwdriver Step 4 Push insert and chuck into housing pay attention to the guiding keyway Step 5 Fasten bushing by means of a fork wrench 3 4 minimum Torque 2 5 Nm 1 8 lb ft...

Page 13: ...M uses industry standard 5 Pin XLR male and female connectors to receive DMX signals and output DMX signals The DMX Pin wiring is as follows Pin 1 Ground Pin 2 Data Pin 3 Data Pin 4 Spare Pin 5 Spare...

Page 14: ...l representation of the current intensity setting E DMX Address Displays the current DMX Address set to the fixture F Button Description The corresponding function will be displayed next to the button...

Page 15: ...k k o S E L E C T D M X A d d r e s s S E L E C T D M X M o d e S E L E C T I n f o r m a t i o n S E L E C T M a i n t e n a n c e S E L E C T W h i t e C C T 2 9 0 0 K S t u d i o O N 1 0 0 D M X 4...

Page 16: ...will open This example shows the 2900K CCT control screen W h i t e C C T 2 9 0 0 K S t u d i o O N 1 0 0 D M X 4 5 1 M E N U C o l o u r C C T S E L E C T C o l o u r C C T 2 9 0 0 K S t u d i o S E...

Page 17: ...n will re open This example shows the 2900K CCT control screen C o l o u r G e k k o S E L E C T G e k k o g e l 1 2 3 S p e c i a l s t e e l b l u e S E L E C T M E N U G e k k o g e l 1 2 3 H L D S...

Page 18: ...n will re open This example shows the 2900K CCT control screen D M X M o d e S E L E C T D M X M o d e S t a n d a r d S E L E C T M E N U D M X M o d e A d v a n c e d S E L E C T M E N U 4 W h i t e...

Page 19: ...a new DMX Address should the user want to change the current DMX Address The new address can be altered by using the Rotary Knob 4 Black Button Once the new DMX Address has been altered via use of the...

Page 20: ...Channel 6 Decimal units Note When the Gekko Gel Color Wheel is switched on by the corresponding channels the decimal channels are used to input a specific number e g 219 2900K 3200K 3600K 4300K 5000K...

Page 21: ...uses 2 channels per fixture so the subsequent fixtures should be offset by 2 as shown in the example figure below For OHM Advanced DMX Control Each OHM to be controlled via DMX must have the address s...

Page 22: ...ay temperature in degrees Celsius Sensor 8 Temperature Array temperature in degrees Celsius Sensor 9 Temperature Array temperature in degrees Celsius Sensor 10 Temperature Array temperature in degrees...

Page 23: ...ng Accessories 32kg Optical Characteristics The waterfall diagram shows a typical spread of light when OHM is suspended at a height of 10 feet Measurements are done on a temperature stabilized OHM at...

Page 24: ...tive cover in front of the LEDs or optics Light Output Due to high light output intensity do not look directly into the bare LED Use diffusers when exposing the light to human eyes Disconnect Device W...

Page 25: ...OHM Light User Manual Version as of October 6 2011...

Page 26: ...Production Resource Group Los Angeles Office 9111 Sunland Blvd Sun Valley California 91352 www prg com...

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