MRMC MRMC-2165-00 User manual

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Broadcast Jib Arm Quick Start Guide
QSG Product code: MRMC-2165-00
Product Covered: MRMC-2159-00
© 2022 Mark Roberts Motion Control ®Ltd. All rights reserved.
No part of this publication may be reproduced, transmitted, or translated
by any means — graphical, electronic, or mechanical — including
photocopying, recording, taping, or storage in an information retrieval
system, without the express written permission of Mark Roberts Motion
Control.
Although every care has been taken to ensure that the information in this
document is accurate and up to date, Mark Roberts Motion Control
continuously strives to improve their products and may make changes to
the hardware, firmware, and software described in this document. Mark
Roberts Motion Control therefore cannot be held responsible for any
error or omission in this document.
All product names mentioned herein are the trademarks or registered
trademarks of their respective owners.
Contact information
Mark Roberts Motion Control Ltd.
Unit 3, South East Studios
Blindley Heath
Surrey
RH7 6JP
United Kingdom
Telephone: +44 (0) 1342 838000
Web: www.mrmoco.com
www.mrmocorentals.com

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Contents
Chapter 1 Quick Start..................................................................... 1
Overview ................................................................................. 1
Safety........................................................................................2
Tripod Safety .................................................................2
Mounting Jib Arm on Tripod ...............................................3
Connecting the Cables ..........................................................6
Jib Arm ..................................................................................8
Setting Jib Arm Weight: ...............................................8
Cable Adjustments........................................................9
Rotate Limits ...............................................................10
Jib Arm Limits.............................................................11
Appendix 1 Specifications............................................................... 14

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Broadcast Jib Arm Quick Start Guide
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Chapter 1 Quick Start
Overview
Thank you for using the Broadcast Jib Arm from Mark Roberts Motion
Control (MRMC). The Broadcast Jib Arm is designed for reliable day-in,
day out use in professional studio environments. The extremely quiet and
Jib Arm is controlled by MRMC’s Flair software with a capability to be
used with a PTZ type camera unit controlled using MRMC’s Polymotion
Chat software, is designed to help you achieve automated, smooth and
repeatable camera motions. It can handle a total payload of up to 4.2kg.
Broadcast Jib Arm has the following components:
A heavy duty tripod on which the jib arm system rests
Rotate Motor that rotates Jib am unit around tripod top plate
Jib arm, or “Height”, moves up and down by cable from
motorised cable drum
PTZ support platform to seat the PTZ camera unit
Heavy-duty tripod
Motorised Cable
Drum
Jib arm (“Hight”)
PTZ Support
Platform
E-stop each side
Rotor Motor

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An emergency-stop (E-stop) button on each side
Safety
•Do not use around flammable gas. All electrical equipment can
generate sparks that can ignite flammable gas.
•Keep Away From Pets And Children. The track and camera heads
have powerful motors that can pinch, so take care not to get your
hands trapped in the gears or cabling.
•Keep the equipment dry. The system has not been made
weatherproof. Do not use with wet hands.
•Keep cables tidy. Use cable ties to keep them out of harm’s way, and
use the cable housing on the Jib arm to avoid running any cables
between the rotor motor and the PTZ.
•Do not insert hands and fingers in any crevices, especially when the
E-stop is released. The robot includes moving parts and motors and
can result in serious injury.
Tripod Safety
•Raise all three jacking feet well clear of the floor before moving.
•Drop all three jacking feet to make good contact with the floor when
parking, and lock off using the top nuts before using the boom in
robotic control.
Caution: Risk of toppling over! Do not roll the equipment close to
steps, ramps: must be used on smooth horizontal surfaces.
Caution: When using the rig under a ceiling or lintel, raise the boom
to the top before moving or stowing the boom, to keep it clear from
the surroundings and less chance of improper handling.Use buttons
provided before powering down.

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Mounting Jib Arm on Tripod
1. Unpack the tripod and wheel it to a sturdy and levelled floor.
2. Two people lift the Jib Arm and thread the umbilical cable through
the centre cavity in the tripod.
Jacking foot
with
rectangular
locking nut

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3. While aligning the screw cavities, seat the base of the arm on the
tripod.
4. Keep the arm firmly in position and tighten the 4 x M8 x 20 Cap
head screws to secure the arm to the base.
5. Attach the weight shaft to the arm using the screw supplied.
6. Add the weights and tighten the 2x weight clamps using the 4 x
screws.
7. Attach the Camera Support Platform to the arm using 2 x screws.
Weight Shaft
Weight Clamp
Screw o secure
weight shaft
Camera Support
Platform

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Notes

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Connecting the Cables
Cable
wrap
PTZ
Camera
SDI VIDEO
CAMERA ETH
CAMERA POWER
250VAC Power
24V PSU
Jib Arm
Connection
Jib Arm Ethernet
E-STOP
Note
Cable connections in the arm are done at the factory and must not
be modified.

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Flair PC
Mini Teensy
USB Joystick
Mains
Mains
E-stop
Broadcast
Panel
Polymotion
Chat Server
Ethernet for Jib Arm
Wifi
Dongle HDMI
SDI VIDEO
Jib Arm Power

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Jib Arm
Setting Jib Arm Weight:
Lift cable
Load
platform
Trim
weights
1. Power up and jog the arm to the horizontal position using the
HEIGHT rocker switch. If the cable is slack and the arm does not fall,
Caution: DO NOT lift and try to lower the Jib arm by hand unless
guided by the procedure below. The cable should remain under
tension all the time.
Caution: DO NOT place any object greater than 4.2kg on the load
platform.
Caution: DO NOT remove all the balance weights with a payload on
the load platform.
Caution: Ensure that you follow the “Setting Jib Arm Mass”
procedure below before operating under fully automated control.
You will need to set the trim weights only once so long as the
payload is not changed.

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ease it down by hand gently ensuring cable is wound cleanly from
the drum, and hold in the horizontal position below.
2. Remove any payload from the load plate and adjust the trim masses
until the arm is balanced very lightly on the lift cable – if you lift the
load plate it should hardly want to fall again. Ensure the trim mass
clamps are tightened securely and the masses can’t bounce against
each other.
3. Place the PTZ camera on the load platform. Move the Height (Jib
arm) up and down a few times on the rocker switch and ensure that
the height cable is running smoothly on the drum without snagging
or turning on itself.Winding down, then back up, should rectify
most issues.
The arm is now safe to operate.
Cable Adjustments
If the arm is noted to sway, and if you can feel slack in the cable fittings to
the O rings on each end, tension adjusters for each Side Tension cable can
be used. Adjust each one a little, keeping a balanced tension each side of
the arm, until the cables are snug against the O rings. Further tension will
not be helpful and may damage the boom. Avoid applying turns into the
cable itself: the adjusters have left and right hand threads each end and
both turn for the adjustment to take place.
Caution: If any cable is damaged and shows sharp ends or fraying,
stop using the equipment and cover cable damage for safety. Contact
MRMC for replacement parts.

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Rotate Limits
The Rotate motor is equipped with an absolute encoder. The system
should be configured with software limits appropriate to the install site.
To prevent improper motion outside the software limits mechanical
switches are provided. Fit the stop bolts into the most appropriate tapped
holes for each direction of rotation. The closest bolt outside the software
limit is to be used to catch any unexpected loss of control.
Side Tension
Cable Adjuster
Limit Switches
Stop Bolt
Tapped
Holes

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Jib Arm Limits
Lever arm switches are used to catch Jib arm down and up limits.These
will be factory set.If the jib arm motion needs to be further limited then
the lever may be adjusted on the switch. The Software limits must then be
adjusted to remain within these limit switches.

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Notes

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Notes

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Appendix 1 Specifications
Max Payload: 5kg, PTZ Type camera unit
Boom Platform reach: 2000mm from pivot
Lift Range: 2890mm Max, 300mm Min, subject to tripod/support
Reach: 2454mm when boom is horizontal
Max Speeds: Rotation: 20°/s, Lift: 150mm/s. Motion profiled with
appropriate ramp times for shot
Total Masses: 75Kg Jib arm with Rotate unit + 50kg High Torsion tripod
Power: 90-240VAC, 3A, IEC Type Cable

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Notes
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