Marshall Electronics CV-PT-HEAD User guide

Broadcast A/V Division

CV-PT-HEAD

User Manual

CV-PT-HEAD Manual

Table of Contents

1. Introduction

2. Joystick Control

3. Pre-Set Positions

4. Connections

5. Cable Management

6. Pan & Tilt Clutch Adjustment

7. Specifications

8. Safety

9. Camera Specific Connections

Warranty

02

03

03

04

05

05

06

06

07

08

1. Introduction

The CV-PT-HEAD can be controlled by CV-MICRO-JYSTK or any BR Remote style controller.
These controllers generate RS485 data which can be connected directly to the CV-PT-HEAD or
sent via an IP network with IP adaptors. The RS485 data can be sent up to 3,000+ feet (1km) on a
four (4) pin XLR cable.

Power for the CV-PT-HEAD can be up to 35V so cable length can be extended very long ranges
by increasing the voltage to the CV-MICRO-JYSTK remote end. Inside the unit is a 12v regulated
supply for the camera so it does not matter what voltage you send to the CV-MICRO-JYSTK, the
camera will always be provided 12V power.

Both power and RS485 control data are delivered via 4pin Lemo connector on the base. Then the
Lemo (base) to Hirose (camera) cable is used to provide command and power to camera.

Marshall cameras use (VISCA) commands to adjust settings in the camera. The control protocols
for these cameras are embedded in the CV-PT-HEAD and can be connected to the camera with
included patch cable. The camera itself can then be controlled via BR Remote controllers. The
Camera CCU output is RS422 and is on the 7pin Lemo connector passed through to camera with
Lemo to Hirose cable.

The CV-PT-HEAD is IP65 weatherproof and can be used outside. This makes a perfect match for
the Marshall CV503-WP IP67 weatherproof camera model for outdoor or dirty environment use.

There are slipping clutches on both pan and tilt motors which prevent damage to the mechanics if
it is moved inadvertently during rigging or if it hits an obstruction during movement.

Need to hang it upside down – no
problem. There are 3x M4 mounting
threads as well as a ¼”-20 on the base
of the PT Head. Simply flip the image
in the Marshall Camera OSD Menu

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CV-PT-HEAD Manual

2. Joystick Control

The CV-PT-HEAD contains 10 gears. Some controllers can select any gear, but others can only
select a fewer number of gears. The movement is fully proportional to the joystick displacement in
all gears.

If the ‘turbo’ button is enabled on the controller this will set the speed to the fastest gear triggered
by holding down the button.

3. Pre-set Positions

The CV-PT-HEAD has the capacity to store up to 64 pre-set positions although some controllers
can only access 4 positions. When first powering the unit on you will need to manually set a ‘Home’
position or storing the positions you need. You can set a ‘Home’ position by using a known picture
position from the camera or by driving it to the ends of the pan and tilt travel. Doing this will enable
it to re-call previously stored positions.

4. Connections

The CV-PT-HEAD is supplied with a short cable to connect it to a controller. This cable can be
simply extended following the wiring diagram below.

XLR4 (NC4MXX)

1 Blue (GND)
2 Green
3 Yellow
4 Red (+12v)

4 Pin Lemo input plug – FGG.0B.304.CLAD52Z

XLR4 (NC4FXX)

1 Blue (GND)
2 Green
3 Yellow
4 Red (+12v)

Pin 1 = GND (Blue)
Pin 2 = RS485 data A (Green)
Pin 3 = RS485 data B (Yellow)
Pin 4 = Power 12 – 35v (Red)

7 Pin Lemo plug for camera power & data - FGG.0B.307.CLAD52Z (not supplied)

Pin 1 = GND (Blue)
Pin 2 = RS422/485 data A TO camera (Green) Also semi-duplex return data.
Pin 3 = RS422/485 data B TO camera (Yellow) also semi-duplex return data.
Pin 4 = Power 12v camera power (Red)
Pin 5 = future use
Pin 6 = future use
Pin 7 = future use

When power is connected the blue LED on the side will flash 3 times whilst the CV-PT-HEAD is
booting up. After this sequence, the LED will indicate 3 states.

Permanently ON = Power applied; data received but not being addressed.
Very Fast Flashing = Being addressed and should respond to commands.
Flashing Very Slowly = Power but no data.

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CV-PT-HEAD Manual

5. Cable Management

On the pan cover, under the camera plate are two M2.5 threaded holes. These can be used to
attach cable management clips if required.

6. Pan & Tilt Clutch Adjustment

Both the pan and the tilt clutches can be adjusted if needed.

To adjust the pan clutch, remove the Pan Cover
which is secured with a single screw. The cover will
need to be prized off as it is sealed with silicone
sealant. The Adjustment nut is on the top of the
shaft and locked with an M3 grub screw. Use a

1.5mm Allen wrench key to loosen the locking
screw and tighten the clutch adjustment nut until
to achieve the required clutch movement. It should
be set as lightly as possible without slipping. If
it is adjusted too tightly, damage may occur to the
pan motor gearbox.

7. Specifications

Power: 12 – 35v @ 0.5A + camera
Camera power: 12v @ 1A max.
Weight: 250gm.
Payload: 400gm. 20 – 60mm wide
Cam Protocols: Marshall VISCA
Pan Range: 350 deg.
Tilt Range: 360 deg.
Environmental: IP66 (with plugs)

8. Safety

There are 2 M4 bolts fitted to the base which should be used for a safety bond if the unit is rigged
above head height.

Also, on the base is a standard ¼”-20 camera mounting thread and 3x M4 threads. Any of these
can be used for mounting the unit to a suitable platform.

Clean all the sealant from the cover and the body
and re-apply a very thin layer of silicone sealant before re-fitting the cover.

The tilt clutch adjuster is accessed by removing the Main Cover. This
has 3 screws. Take care not to damage the sealing gasket. The Tilt
Shaft Support Bearing may be on the shaft, as in this picture, or may
me retained in the main cover. Take care not to lose this bearing.

The tilt adjustment is an M5 Nylock nut under the bearing on the tilt
shaft. You will need an 8mm spanner.

When re-fitting the cover ensure the gasket is located correctly and
that no wires become trapped between the body and the cover.

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9. Camera Specific Connections

CV-PT-HEAD comes with a Lemo (base) to Hirose (camera) cable

for Marshall cameras. The table below is used if a Male connector
is fitted on the camera. ie. if the connector on the camera itself
has pins – like in the picture.

Marshall Cameras

Hard wired cable assembly into camera

Warranty

Marshall Electronics warranties to the first consumer that this device will, under normal use,
be free from defects in workmanship and materials, when received in its original container, for
a period of two years from the purchase date. This warranty is extended to the first consumer
only, and proof of purchase is necessary to honor the warranty. If there is no proof of purchase
provided with a warranty claim, Marshall Electronics reserves the right not to honor the warranty
set forth above. Therefore, labor and parts may be charged to the consumer. This warranty
does not apply to the product exterior or cosmetics. Misuse, abnormal handling, alterations or
modifications in design or construction void this warranty. No sales personnel of the seller or
any other person is authorized to make any warranties other than those described above, or to
extend the duration of any warranties on behalf of Marshall Electronics, beyond the time period
described above.

Core Colour Function Lemo 7 pin No. Hirose pin No. Normal Colour

Screen (around
Yello w )

Orange Data A 2 6 Green

Grey Data B 3 5 Yel low

Red Power 12v 4 9 Red

5 no connection

6 no connection

7 no connection

White

Yello w Menu Control Insulate

Black SDI co-ax

Not all the functions built into controller are actionable by all the types of cameras. The controls to
which Marshall CV500-series cameras will respond are as follows.

Power GND 1 8 Blue

3.3v for Menu
control

Insulate

Due to constant effort to improve products and product features, specifications may change
without notice.

• Zoom (if a motorised zoom is fitted)

• Focus (if a motorised focus is fitted)

• Iris (if a motorised Iris is fitted)

• Auto Iris

• IR Mode

• Camera Gain -3dB – 30dB

• Shutter Speed

• Auto Push White

• Full Auto Tracing White

• Preset White 3,200K & 5,600K

7

• Manual White Balance

• Red Gain

• Blue Gain

• Cam Detail

• Cam Gamma

• Output Standard (1080i & 1080p in 50Hz &
60Hz frame rates.)

• Picture Flip

• Cam DNR

20608 Madrona Avenue, Torrance, CA 90503

Tel: [phone] • Fax: [phone]

www.marshall-usa.com

[e-mail]

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