GLP impression s350 User manual

User Manual
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GLP® impression S350 User Manual Revision A
This user manual covers fixture software version v. 28-40-28-27
© 2018 German Light Products GmbH. All rights reserved.
The marks ‘GLP’, ‘German Light Products’ and ‘impression’ are trademarks registered as the property
of German Light Products GmbH in Germany, in the United States of America and in other countries.
The information contained in this document is subject to change without notice. German Light
Products GmbH and all affiliated companies disclaim liability for any injury, damage, direct or
indirect loss, consequential or economic loss or any other loss occasioned by the use of, inability to
use or reliance on the information contained in this document.
Manufacturer head office:
German Light Products GmbH (GLP), Industriestrasse 2, 76307 Karlsbad, Germany
Tel (Germany): [phone] - 0
Service & Support EMEA:
GLP, Industriestrasse 2, 76307 Karlsbad, Germany
Tel. (Germany): [phone]
Email: [e-mail]
www.glp.de
Service & Support USA:
GLP USA, 1145 Arroyo St., Ste. A, 91340 San Fernando, California
Tel (USA): [phone]
Support (US): [email protected]
www.germanlightproducts.com

Contents
1. Safety .................................................................................... 4
2. Avoiding damage .............................................................. 9
3. Product overview.............................................................. 11
4. Product features ............................................................... 12
5. Preparation for use ........................................................... 19
6. Control menus and LCD display .................................... 23
7. Control menu layout ........................................................ 25
8. DMX channel layout......................................................... 29
9. Caring for your product................................................... 36
10. Troubleshooting................................................................. 37
11. Technical specifications .................................................. 38
12. Dimensions ......................................................................... 41

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4 GLP® impression S350 User Manual Rev. A
1. Safety
Key to symbols
The following symbols are used in this manual:
General safety information
•Read this section carefully before installing or using the impression S350 lighting fixture.
If you have any doubts or questions about how to use the product safely, contact
your GLP® supplier for assistance.
•The product and this user manual are intended for use by experienced professionals
with the knowledge and skills to set up, operate, and maintain high-powered,
remotely controlled lighting equipment safely and efficiently. These operations require
expertise that may not be provided in this manual.
•Respect all warnings and directions given in this user manual and on the product.
Read this manual and familiarize yourself with the safety precautions it contains
before installing or using the product. The manufacturer will take no responsibility for
damages or harm resulting from disregard for the information in this manual.
•Check the GLP website at www.glp.de and make sure that you have the latest
version of this user manual. Check the fixture software version indicated on page 2 of
this user manual and then use the fixture’s control panel to check the version installed
in the fixture. If the versions are not the same, the user manual may still cover the
fixture (software updates do not always affect the way you use the fixture), but it is
possible that the manual does not match the fixture perfectly. The software release
notes should help clarify this question. You can consult software release notes and
download the correct version of this user manual on the GLP website if necessary.
Warning! Safety hazard.
Risk of severe injury or
death.
Warning! Hazardous voltage.
Risk of lethal or severe
electric shock.
Warning! See user
manual for important
safety information.
Warning! Fire hazard.
Warning! Risk of eye
injury.

German Light Products®
GLP® impression S350 User Manual 5
•Make the user manual available to all installers and operators and save the manual
for future reference.
•If you have questions about the safe operation of the impression S350, please contact
an authorized GLP distributor (see list of distributors at www.glp.de).
•Use the product only as directed in this user manual. Observe all markings in this user
manual and on the product.
•Refer any service operation not described in this manual and refer all repairs to a
technician authorized by GLP.
•The light source in this product must not be changed by the end user.
•Read and follow the user documentation for all additional equipment.
Electrical safety
•Do not allow the product to come into contact with water or moisture.
•Use only a source of AC mains power that complies with local building and electrical
codes and has both overload and ground fault (earth fault) protection.
•Ensure that the product is electrically connected to ground (earth).
•Disconnect the product from AC mains power before carrying out any installation or
maintenance work and when the product is not in use.
•Disconnect the product from power immediately if the power plug or any seal, cover,
cable, or other component is damaged, defective, deformed, wet or showing signs
of overheating. Do not reapply power until the product has been repaired and made
safe by a technician authorized by GLP.
•Before using the product, check that all power distribution equipment and cables are
in perfect condition and rated for the electrical requirements of all connected
devices.
•Use only a Neutrik powerCON TRUE1 cable connector for AC power input at the
product’s power connector.
•Use minimum 14 AWG or 1.5 mm2power input and relay cables that are minimum
16 A rated and temperature-rated to suit the application. In the USA and Canada the
cables must be UL-listed, type SJT or equivalent. In the EU the cables must be type
H05VV-F or equivalent.
•The supplied power input cable is rated as follows:
- US power cable: 16 A, 14 AWG, UL listed, E304117, SJT, 4.9 ft.
- EU power cable: 16 A, 1.5mm², H05VV-F, 1.5 m
•If a fuse blows, replace it with one of the original type and rating only. If new fuses
blow, disconnect the product from power and send it to a technician authorized by
GLP for repair.

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6 GLP® impression S350 User Manual Rev. A
Fire safety and protection from burns
•Do not operate the product if the ambient temperature (Ta) exceeds 45° C (115° F).
•The surface of the product’s casing can reach up to 55° C (131° F) during operation.
Avoid contact by persons and materials. Do not install the product in a location
where there is a risk of accidental contact. Allow the product to cool for at least 10
minutes before handling.
•Keep the product well away from flammable materials.
•Keep all combustible materials (e.g. fabric, wood, paper) at least 200 mm (8 in.)
away from the product.
•Ensure that there is free and unobstructed airflow around the product. Provide a
minimum clearance of 100 mm (4 in.) around fans and air vents.
•Do not illuminate surfaces within 2 m (6.6 ft.) of the product.
•Do not install a fuse that has a higher rating than the one originally installed in the
product. Do not bypass fuses.
•Do not stick filters, masks or other materials onto optical components.
•If the fixture seems to be abnormally hot, shows signs of melting or emits smoke,
disconnect the fixture from power immediately and allow it to cool. Do not touch the
fixture without heatproof safety gloves. Keep the fixture well away from combustible
and flammable materials.
•The product’s optical components can focus the sun’s rays, creating a risk of fire and
damage. Do not expose the front of the product to sunlight or any other intense light
source, even from an angle.
Eye safety
•The impression S350 is classified as a Risk Group 2 product according to DIN EN
62471:2009-03. Possibly hazardous radiation emitted. Do not stare into the light output
from the product. May be harmful to the eyes.
•Do not look at the product’s light output with optical instruments or any device that
may concentrate the light output.
•Make sure that persons working on or near the product are not looking directly into
the light output when the product lights up suddenly. This can happen when power is
applied, when the product receives a DMX signal, or when certain control menu
items are selected.
•Provide well-lit conditions to reduce the pupil diameter of anyone working on or near
the product.

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GLP® impression S350 User Manual 7
Strobe safety
•Flashing light, particularly at 5 - 30 Hz, may cause seizures in persons with
photosensitive epilepsy. Do not use strobe effects for extended periods.
•Comply with local regulations on the use of strobe lighting and notify the public in
advance with highly visible warning signs when strobe effects are used.
•If a seizure occurs, stop using strobe effects. Seek professional medical help. Note the
time that the seizure starts and finishes. Call emergency medical help urgently if the
seizure lasts more than five minutes, if it is the person’s first seizure, or if the person is
injured. While waiting for help to arrive, consider the following general advice for
caring for a person who is having a seizure: protect the affected person from injuring
themselves on hard or sharp objects. If necessary, move the person to a safe place.
Lay them on their side with their head supported to prevent it from hitting the floor.
Loosen any tight clothing around their neck. Do not use force to hold the person or
restrict their movements. Do not put anything in their mouth, including your fingers.
Installation and operation safety
•The fixture must be installed and operated by qualified personnel only and in
accordance with applicable regulations such as DIN VDE 0711-217.
•The fixture is not portable when installed.
•Ensure that the supporting structure and installation hardware used can hold at least
10 times the weight of the load that they support.
•Install the fixture with hardware specifically designed and rated for the purpose.
Check that all installation hardware is in perfect condition. Fasteners must be steel
grade 8.8 strength or better. Rigging clamps must be half-coupler type that
completely encircle the rigging truss chord.
•Screws or bolts used for mounting hardware must protrude minimum 9 mm / 0.36 in.
and maximum 11 mm / 0.43 ins. into the threaded holes in the base of the fixture.
•If the fixture is installed in a location where it may cause injury or damage if it falls,
install as directed in this manual a safety cable or similar secondary attachment that
will hold the fixture if a primary attachment fails. The secondary attachment must be
approved by an official body such as TÜV as a safety attachment for the weight that
it secures, it must comply with EN 60598-2-17, and it must be able to support a static
suspended load that is ten times the weight that it secures.
•Fasten the fixture to a structure or surface as directed in this user manual. Do not use
safety cables as the primary means of support.

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8 GLP® impression S350 User Manual Rev. A
•Before applying power to the product, ensure that the moving head can move
through its full range without risk of collision. Allow a minimum center-to-center
distance of 600 mm / 23.6 in. between fixtures.
•Check that all covers and rigging hardware items are secure.
•Do not operate the product with missing or damaged covers, shields or any optical
component.
•Restrict access below the work area and work from a stable platform whenever
installing, servicing or moving the product.
•If the product becomes damaged, stop using it immediately and disconnect it from
power. Do not attempt to use a product that is obviously damaged.
•Do not modify the product in any way not described in this user manual.
•Install genuine GLP parts only.
•If at any time you see that the product does not conform with one or more of the
above safety requirements, disconnect the product from power and secure the
affected area until the fixture is installed safely.

German Light Products®
GLP® impression S350 User Manual 9
2. Avoiding damage
Do not point the front of the fixture towards the sun or other strong light sources. The
front lens focuses and concentrates light just like a magnifying glass. Strong light can
cause internal damage to the fixture, melting components or starting an internal fire
within seconds.
Figure 1. Avoiding damage from light sources
Damage can occur whether the fixture is powered on or off. See Figure 1. Damage
can also occur if the light hits the front of the fixture at an angle: the fixture does not
need to be pointing directly at the sun or other light source.
To avoid problems from strong light sources:
•Do not expose the front of a fixture to sunlight or any other strong light source.
•For outdoor applications during daylight, make sure that the front face of any fixture is
shielded or points away from the sun, even when not in use.
•Avoid pointing other high-powered beam lights directly at the fixture.
Do not pick up or carry the fixture by the front lens bezel, as it is not designed to
support the weight of the fixture. The LCD display is also fragile. Picking up or
supporting the fixture in these places could result in damage that is not covered by the
warranty.
Use only original spare parts. Any structural modification of the system will void the
product warranty.
Protect the front lens from dirt, dust and other contaminants. Do not touch the front
lens. Airborne particles and grease from your fingers can become baked onto the lens
and difficult to remove.
Clean optical components only as directed in this manual (see ‘Caring for your
product’ on page 36). Oils, solvents, and other chemicals commonly used for cleaning
can damage the lens coatings and surfaces.
Do not drop the product or expose it to mechanical stress.
Do not expose the product to heat (from other lighting fixtures for example).

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10 GLP® impression S350 User Manual Rev. A
Transportation and storage
Transport the impression S350 either in a flightcase or in its original packaging to
protect the fixture from damage caused by shocks during transportation.
Store the fixture in a dry location where the temperature will remain above 0° C (32° F)
when not in use.
Important! Allow the fixture to cool completely and release the tilt lock before packing
or transporting the fixture in a flightcase or the original cardboard box.

German Light Products®
GLP® impression S350 User Manual 11
3. Product overview
Figure 2: Product overview
A – Head
B – Front glass
C – Mini-base with safety cable
attachment points
D – Tripod stand (supplied)
E – Stabilizing strap attachment point
F – Yoke cooling vents
G – Tilt lock
H – Yoke cooling vents
I – Control panel display
J – Mode button
K – Jog wheel
L – Enter button
M – DMX Out (thru) 5-pin XLR
N – DMX Out (thru) 3-pin XLR
O – Fuseholder
P – Power On/Off
Q – AC mains power In
R – Ethernet Port
S – DMX In 3-pin XLR
T – DMX In 5-pin XLR
A
B
C
D
E
F
G
H
I
J
K
L
M N O P QRS T

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12 GLP® impression S350 User Manual Rev. A
4. Product features
The impression S350 from GLP is a high-quality moving head lighting fixture with a 350W
white light LED engine that provides outstanding color rendering and rich, natural
colors. Advanced German design allows exceptional performance and a versatile
feature set to be packed into one of the most compact moving head lighting fixtures
currently available, using GLP’s familiar ‘baseless’ format.
Rotating gobos, fixed gobos and a gobo animation wheel give impressive projections
and beam effects. A rotating 8-facet prism and a flexible four-blade rotating framing
module add to the impression 350’s packed feature set. Precisely engineered optics
give a powerful, homogenous and sharply defined beam throughout the fixture’s
zoom range. Power input via a Neutrik powerCON TRUE1 connector allows hot
plugging.
The impression S350 is designed for permanent or temporary indoor use. It can be used
outdoors if it is protected from moisture and precautions are taken to prevent damage
from direct sunlight. It may be placed upright on a level surface or suspended from a
suitable structure as described this manual.
The impression S350 is not suitable for household use, for use in any location where
unattended children have access to it, or for use in permanent outdoor installations.
Light source
The impression S350 is equipped with a 350 W white light LED engine with a rated
lifetime of 20 000 hours to >70% LED output.
Control panel
The control panel on the side of the yoke has a backlit graphic LCD display for setting
up the fixture and changing fixture settings. See ‘Control menu layout’ on page 25 for
a table showing the control menu structure and options available.
Pan and tilt
The impression S350 pans through 640° and tilts through 262°, with coarse and fine
control channels and self-correcting position feedback available.
Pan and tilt position feedback can be disabled/enabled using the control panel or the
Special / Control DMX channel.
The direction of pan and/or tilt movement can be reversed by selecting an Invert
command using the fixture’s control panel or the Special / Control DMX channel.
Inverting movement is a fast way of obtaining symmetrical effects without
reprogramming at the console.

German Light Products®
GLP® impression S350 User Manual 13
Color
The impression S350 provides 0-100% continuous CMY color mixing and a 10-slot color
wheel with ten dichroic color filters including CTC (see Figure 3).
A good method of controlling color is to set CMY levels to 0% when you begin to use
the color wheel. Then, after you have selected a color on the color wheel, you can
fine tune it using the CMY channels.
Open Slot 1
Congo Blue
(UV)
Slot 2
Green
Slot 3
Orange
Slot 4
Magenta
Slot 5
Blue
Slot 6
CTC 1
Slot 7
CTC 2
Slot 8
CTC 3
Slot 9
Minus green
Slot 10
Red
Figure 3. Color wheel
CTC
The CTC DMX channel lets you adjust color temperature from 8 000 K to 2500 K by
deploying the CMY flags. The channel sets the flags into the perfect positions for
matching color temperatures on the black body line.
A recommended approach is to set CMY levels to 0% when you begin to use the CTC
channel. After you have selected a color temperature on the CTC channel you can
fine tune it using the CMY channel.
Rotating gobos
The rotating gobo wheel contains the seven rotating gobos shown below:
Open Gobo 1
Crazy
Loops
Gobo 2
Block of
Lines
Gobo 3
Crossed
Lines
Gobo 4
Zigzag
Gobo 5
Ornament
Gobo 6
Zebra
Gobo 7
Bad
Painter
Figure 4. Rotating gobos
You can either select a rotating gobo or set the entire gobo wheel to rotate with
variable speed and direction on DMX channel 10. Then you can either set gobo

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14 GLP® impression S350 User Manual Rev. A
indexed angle or set gobo rotation speed and direction with 16-bit control on
channels 11 and 12.
Fixed gobos
The fixed gobo wheel contains the ten fixed gobos shown below:
Open Gobo 1
Dots in
Square
Gobo 2
Three
Thirds Line
Gobo 3
Ants
Gobo 4
Big Dots
Gobo 5
Wave
Lines
Gobo 6
Three
Thirds
Circle
Gobo 7
Mosaic
Window
Gobo 8
Daisy
Flower
Gobo 9
Hairy
Gobo 10
Random
Blocks
Figure 5. Fixed gobos
You can either select a fixed gobo or set the entire fixed gobo wheel to rotate with
variable speed and direction on DMX channel 13.
Animation wheel
You can deploy the animation wheel with
the animation profile at continuously
variable angles from 0° to 90° to give
horizontal, diagonal or vertical animation
effects. You can also vary the speed and
direction of the animation wheel rotation.
When used in combination with static or
varying colors, rotating or fixed gobos,
framing and frost or focus, the animation
wheel makes a huge range of effects
possible, from abstract moving patterns to
simulated flames, branches in the wind,
ripples on water, etc.
Figure 6. Animation wheel

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GLP® impression S350 User Manual 15
Framing
The four-blade framing module offers individual control of each blade, and the entire
module can be indexed continuously from -45° to +45°. Blades can be continuously
angled by +/- 30° and inserted by up to 100%, giving flexibility in choice of frame shape
and size right down to dead blackout.
Two framing control modes are available:
•PI (Position/Indexing) mode lets you insert each blade into the beam from 0% to 100%
on one channel and tilt each blade from -30° to + 30° on the next channel. Inserting
all four blades 100% into the beam will result in dead blackout. The fixture is set to PI
mode by default.
•LR (Left/Right) mode gives you individual control of the left-hand and the right-hand
sides of each of the four blades. In this mode, for example, DMX channel 25 gives
control of the left-hand side of blade 1 and channel 26 gives control of the right-hand
side of blade 1.
To use framing, select either PI mode (this mode is selected by default) or LR mode
using either the fixture’s control panel or the Special / Control DMX channel. Then use
DMX channels 25 – 32 to control the four framing blades and use DMX channel 24 to
set the indexed angle of the entire framing module.
Frost
The frost system offers two levels of frost effect that can give softer, more diffuse
projections: a continuously variable light frost and a continuously variable medium
frost.
Shutter effects
The impression S350 features an electronic dimmer / shutter system that provides pulse
and strobe effects as well as instant open and blackout.
Dimming
0 – 100% continuous dimming is available.
See Figure 7. You can select from two dimming curves using the control panel or the
Special / Control DMX channel: Linear and Extra soft:
•Light output using the Linear curve will appear to increase and decrease evenly
throughout the dimming range.
•The Extra soft curve gives finer control at low light levels (where the eye is more
sensitive to changes in light level) and coarser control at high levels.
The default setting is Extra soft.

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16 GLP® impression S350 User Manual Rev. A
Light
output
DMX control value
Figure 7. Dimming curves
Zoom
The impression S350 has a 1:5 zoom range. You can narrow the beam angle from 42°
to 8°.
Control on the Zoom DMX channel can be inverted. Normal control as the DMX value
increases is flood
 spot. You can invert this using the control panel and the Special /
Control DMX channel so that control becomes spot
 flood.
Focus and focus tracking
You can carry out 8-bit focus adjustment on DMX channel 17 and fine 16-bit
adjustment on DMX channel 18.
You can also set focus to automatically adjust to match different zoom angles if you
enable focus tracking in the fixture’s control panel or on the Special / Control DMX
channel. This feature is useful when zooming in mid-air effects.
Focus tracking can be optimized for three different projection distance ranges. Four
focus tracking settings are available:
•Focus tracking OFF sets the zoom and focus DMX channels to control zoom and focus
completely independently of each other.
•Focus tracking NEAR sets focus to automatically adjust for optimum sharpness at
projection distances of around 10 meters or less when the zoom angle is changed.
•Focus tracking MEDIUM sets focus to automatically adjust for optimum sharpness at
projection distances of around 11 - 20 meters when the zoom angle is changed.
•Focus tracking FAR sets focus to automatically adjust for optimum sharpness at
projection distances of over 20 meters when the zoom angle is changed.
If you have enabled Focus tracking NEAR, MEDIUM or FAR you can still override the
automatic focus setting: any manual adjustment that you make on the Focus DMX
channel will take priority over the automatic setting. However, if you change the zoom
angle again, the fixture will forget any manual focus setting and return to
automatically adjusting focus to match the fixture’s zoom angle.

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GLP® impression S350 User Manual 17
Fan modes
The four different cooling fan modes give you a range of options to choose from
depending on how you want to allocate priority between high-intensity light output or
low fan noise:
•Fan regulated gives priority to light output and only operates fans as necessary. If the
fixture is blacked out, fans run at minimum speed. When light output intensity is
increased, temperature regulation increases fan speed to the level necessary to keep
the fixture at optimum temperature.
If light output is set to maximum intensity but the fans can keep the fixture at optimum
temperature, there will be no regulation of light intensity. If the fixture begins to
exceed optimum temperature, light intensity will be limited until optimum
temperature can be maintained.
•Fan constant high mode is optimized for maximum light output and suits operation in
high ambient temperatures. Fans are set to constant operation at high speed. Light
output intensity is limited smoothly if it becomes necessary in order to keep fixture
temperature at optimum level.
Besides maximizing light output in high ambient temperatures, you can use this mode
to cool down a fixture quickly or to remove dust from cooling fans.
•Fan constant medium sets fans to constant operation at medium speed. Light output
intensity is reduced to a level where it will normally remain constant at ambient
temperatures of up to 45° C (113° F). Intensity is smoothly limited further if it becomes
necessary in order to keep fixture temperature at optimum level.
•Fan constant low mode sets fans to constant operation at low speed and is optimized
for minimum noise. Light output intensity is reduced to a level where it will normally
remain constant at ambient temperatures of up to 30° C (86° F). Intensity is smoothly
limited further if it becomes necessary in order to keep fixture temperature at
optimum level.
In all fan modes, if fixture temperature reaches a dangerous level, LEDs will be shut
down for a period until the fans have brought the temperature down to a safe level.
You can set the cooling fan mode using the control panel or the Special / Control DMX
channel.
Effect wheel shortcuts
By default, the color wheel and gobo wheels take the shortest, fastest route from one
slot to the next, even if this means that they may pass through the open position. To
avoid the wheels passing through the open position when they change from one slot
to the next you can set Effect shortcuts on the Special / Control DMX channel to OFF.
Behavior when the fixture is not receiving a DMX signal
You can set the fixture to react in four different ways if no DMX signal is present (if the
fixture is being controlled by DMX but the DMX signal stops, or if you apply power to
the fixture when no DMX signal is present):
•Hold sets the fixture to continue obeying the last DMX values it received. This is the
default setting.
•Blackout sets the fixture to black out whenever it is not receiving a DMX signal.

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18 GLP® impression S350 User Manual Rev. A
•Stand-Alone sets the fixture to play its stored stand-alone scene (see DMX Shot below)
when the fixture is not receiving a DMX signal. If no stand-alone scene is stored in
memory, the fixture will black out.
•DMX Shot takes a snapshot of the DMX values that are currently being received and
stores them in the fixture’s memory as its stand-alone scene. The fixture will display this
stand-alone scene if it is set to Stand-Alone (see above) and is not receiving a DMX
signal.
You can select one of the four settings above using either the control panel or the
Special / Control DMX channel.
Stand-Alone operation
If the fixture is set to Stand-Alone and if a stand-alone scene has been stored in its
memory using the DMX Shot command, it will display its stand-alone scene at all times
when it is powered on but not receiving a DMX signal. You can therefore use this
setting if you want fixtures to automatically start stand-alone operation when you
apply power to them.
PWM frequency
You can change the LED dimming PWM frequency in order to avoid flicker and beat
frequencies in video images. To do this, select a new PWM frequency using either the
Settings DMX channel or the fixture’s control panel.
The default PWM setting is 3000 Hz. You can set the PWM frequency to 2200 Hz,
3000 Hz, 4800 Hz, 9600 Hz or 25 kHz. Note that a higher PWM frequency may affect
dimming performance.
The PWM frequency setting is stored in the fixture and is not affected by cycling power
off and on. However, it will be affected if you use the Factory default command in the
control menus.
As a rule, you should set all the fixtures in an installation to the same PWM frequency in
order to ensure the same performance.
Installation options
The base has four Camlock fastener points and two M10 threaded holes for a
removable tripod (supplied), omega brackets or direct mounting of half-coupler
clamps, allowing various rigging options.
Two eyelets are provided for safety cable attachment.

German Light Products®
GLP® impression S350 User Manual 19
Figure 8 Mounting points in base
5. Preparation for use
Warning! Read ‘Safety’ starting on page 4 for important safety information
that you must understand before you install or operate the fixture.
Included Items
The impression S350 is supplied with a power cable with a powerCON TRUE1 connector
and a tripod with Camlock fasteners for use as a floor stand.
Orientation and location
The impression S350 may be rigged in any orientation following the instructions in this
chapter or placed on a level surface in locations where it is safe to stand the fixture.
Keep the head at least 0.2 m (8 in.) away from combustible materials (including
curtains and stage scenery) when the fixture is installed.
Make sure that there is no risk of collision when the head pans and tilts. Allow a
minimum center-to-center distance of 600 mm (23.6 in.) when installing impression S350
fixtures side by side.
Mounting fasteners in base
See Figure 8. The base of the impression S350 has two threaded holes Athat accept
M10 bolts or screws, and four mounting points Bthat accept standard camlock
quarter-turn fasteners. The camlock center-to-center distance is 90 mm (3.54 in.).
A
BB
B
B
A

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20 GLP® impression S350 User Manual Rev. A
Mounting with rigging clamps
To install the impression S350 in any orientation on a rigging
truss or similar support:
See Figure 9. Pass two M10 grade 8.8 steel bolts or
screws through two half-coupler type rigging clamps
and check that the bolts will protrude minimum 9 mm /
0.35 in. and maximum 11 mm / 0.43 in. into the base of
the fixture when tightened.
See Figure 8. Fasten the bolts through the half-coupler
clamps and into holes Ain the base of the fixture so
that the clamps are held securely.
Fasten the rigging clamps securely around a chord on a rigging truss or similar bar.
Secure the fixture with a safety cable as described in ‘Safety attachment’ on page
20.
Make sure that the head will not collide with another fixture or any other object
when it moves through its full pan and tilt ranges.
Safety attachment
If the impression S350 may cause
injury or damage if it falls, you
must secure it with a secondary
attachment such as a safety
cable. To install a safety cable:
Obtain a safety cable that is
approved for the load it will
secure.
See Figure 10. Fasten the
safety cable to one of the
safety cable attachment
points in the base of the
fixture and loop it around a
secure anchoring point such
as a truss chord. Remove as
much slack as possible in the safety cable (by looping it more than once around
the truss chord, for example).
Secure the safety cable and check that it will hold the fixture if a primary
attachment fails.
Figure 9. Min./max. bolt
protrusion into base
(millimeters)
Figure 10. Safety cable attachment points in base of
fixture