HIK VISION IR Network Speed Dome User manual

IR Speed Dome
Installation Manual
V2.0.1

IR Speed Dome Installation Manual
0
Hikvision® IR Speed Dome User’s Manual
This manual is furnished under license and may be used or copied only in accordance with the terms of such license. The
content of this manual is furnished for informational use only, is subject to change without notice, and should not be
construed as a commitment by Hikvision Digital Technology Co., Ltd. (Hikvision). Hikvision assumes no responsibility
or liability for any errors or inaccuracies that may appear in the book.
Except as permitted by such license, no part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, recording, or otherwise, without the prior written
permission of Hikvision.
HIKVISION MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE,
REGARDING THE HIKVISION SOFTWARE. HIKVISION DOES NOT WARRANT, GUARANTEE, OR MAKE
ANY REPRESENTATIONS REGARDING THE USE OR THE RESULTS OF THE USE OF THE HIKVISION
SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY, CURRENTNESS, OR
OTHERWISE. THE ENTIRE RISK AS TO THE RESULTS AND PERFORMANCE OF THE HIKVISION
SOFTWARE IS ASSUMED BY YOU. THE EXCLUSION OF IMPLIED WARRANTIES IS NOT PERMITTED BY
SOME STATES. THE ABOVE EXCLUSION MAY NOT APPLY TO YOU.
IN NO EVENT WILL HIKVISION, ITS DIRECTORS, OFFICERS, EMPLOYEES, OR AGENTS BE LIABLE TO
YOU FOR ANY CONSEQUENTIAL, INCIDENTAL, OR INDIRECT DAMAGES (INCLUDING DAMAGES FOR
LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, AND THE
LIKE) ARISING OUT OF THE USE OR INABILITY TO USE THE HIKVISION SOFTWARE EVEN IF HIKVISION
HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME STATES DO NOT
ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL
DAMAGES, THE ABOVE LIMITATIONS MAY NOTAPPLY TO YOU.

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Regulatory Information
FCC Information
FCC compliance: This equipment has been tested and found to comply with the limits for a digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his own expense.
FCC Conditions
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may cause undesired operation.
EU Conformity Statement
This product and - if applicable - the supplied accessories too are marked with "CE" and comply
therefore with the applicable harmonized European standards listed under the Low Voltage Directive
2006/95/EC, the EMC Directive 2004/108/EC.
2002/96/EC (WEEE directive): Products marked with this symbol cannot be disposed of as unsorted
municipal waste in the European Union. For proper recycling, return this product to your local
supplier upon the purchase of equivalent new equipment, or dispose of it at designated collection
points. For more information see: www.recyclethis.info.
2006/66/EC (battery directive): This product contains a battery that cannot be disposed of as unsorted
municipal waste in the European Union. See the product documentation for specific battery
information. The battery is marked with this symbol, which may include lettering to indicate
cadmium (Cd), lead (Pb), or mercury (Hg). For proper recycling, return the battery to your supplier
or to a designated collection point. For more information see: www.recyclethis.info.
Description on Laser Specification
The optical disc drive such as DVD Super Multi (Double Layer) Drive 22X that is used in this computer is equipped
with laser. The classification label with the following sentence is affixed to the surface of the drive.
CLASS 1 LASER
PRODUCT TO IEC60825-1
LASER KLASSE 1
The drive with the above label is certified by the manufacturer that the drive complies with the requirement for laser
product on the date of manufacturing pursuant to article 21 of Code of Federal Regulations by the United States of
America, Department of Health & Human Services, Food and Drug Administration.
In other countries, the drive is certified to comply with the requirement pursuant to IEC 60825-1 and EN 60825-1 on
class 1 laser product.
This computer is equipped with the optical disc drive in the following list according to the model.

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Safety Warnings and Cautions
Please pay attention to the following warnings and cautions:
Hazardous Voltage may be present: Special measures and precautions must be taken when using this
device. Some potentials (voltages) on the device may present a hazard to the user. This device should only be
used by employees from our company with knowledge and training in working with these types of devices that
contain live circuits.
Power Supply Hazardous Voltage: AC mains voltages are present within the power supply assembly. This device must be
connected to a UL approved, completely enclosed power supply, of the proper rated voltage and current. No user serviceable parts
inside the power supply.
System Grounding (Earthing): To avoid shock, ensure that all AC wiring is not exposed and that the earth grounding is
maintained. Ensure that any equipment to which this device will be attached is also connected to properly wired grounded receptacles
and are approved medical devices.
Power Connect and Disconnect: The AC power supply cord is the main disconnect device to mains (AC
power).The socket outlet shall be installed near the equipment and shall be readily accessible.
Installation and Maintenance: Do not connect/disconnect any cables to or perform
installation/maintenance on this device during an electrical storm.
Power Cord Requirements: The connector that plugs into the wall outlet must be a grounding-type male plug designed for use

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in your region. It must have certification marks showing certification by an agency in your region. The connector that plugs into the
AC receptacle on the power supply must be an IEC 320, sheet C13, female connector. See the following website for more information
http://kropla.com/electric2.htm.
Lithium Battery: This device contains a Lithium Battery. There is a risk of explosion if the battery is
replaced by an incorrect type. Dispose of used batteries according to the vendor’s instructions and in
accordance with local environmental regulations.
Perchlorate Material: Special handling may apply. See www.dtsc.ca.gov/hazardouswaste/perchlorate.
This notice is required by California Code of Regulations, Title 22, Division 4.5, Chapter 33: Best
Management Practices for Perchlorate Materials. This device includes a battery which contains perchlorate material.
Taiwan battery recycling:
Please recycle batteries.
Thermal and Mechanical Injury: Some components such as heat sinks, power regulators, and
processors may be hot; care should be taken to avoid contact with these components.
Electro Magnetic Interference: This equipment has not been tested for compliance with emissions
limits of FCC and similar international regulations. This device is not, and may not be, offered for sale or lease, or sold, or leased until
authorization from the United States FCC or its equivalent in other countries has been obtained. Use of this equipment in a residential
location is prohibited. This equipment generates, uses and can radiate radio frequency energy which may result in harmful interference
to radio communications. If this equipment does cause harmful interference to radio or television reception, which can be determined
by turning the equipment on and off, the user is required to take measures to eliminate the interference or discontinue the use of this
equipment.
Lead Content:
Please recycle this device in a responsible manner. Refer to local environmental regulations for proper
recycling; do not dispose of device in unsorted municipal waste.

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Preventive and Cautionary Tips
Before connecting and operating this product, please be advised of the following tips:
•All the operations should strictly comply with the local electrical safety regulations, fire prevention regulations and other related
regulations.
•Ensure unit is properly secured. Major shocks or jolts to the unit as a result of dropping it may cause damage to the sensitive
electronics within the unit.
•Power down the unit before connecting and disconnecting accessories and peripherals.
•Make sure that the endure ability of ceilings or walls is 4 times as the weight of speed dome and its accessories.
1. Preparation of cables
Choose the video cable according to the transmission length. The video should meet the least demands as:
1. 75Ω resistance
2. 100% copper core conducting wire.
3. 95% weaving copper shield.
RS485 communication cable, please refer to Appendix 2
24V AC power cable, please refer to Appendix 3
2. Please keep all wrappers
Please keep all wrappers after unpack them for future use. In case of any failure occurred, please return the speed dome to the
factory with the original wrapper.
Note: Transportation without the original wrapper may result in damage on the speed dome and cost additional charge.

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Table of Contents
Chapter 1 Installation and Settings.............................................................................................................................. 5
1.1 Installation ..................................................................................................................................................... 5
1.2 Cabling........................................................................................................................................................... 8
1.2.1 Cable Standards .................................................................................................................................. 8
1.2.2 Cabling Instructions............................................................................................................................ 9
1.2.3Alarm Input /Output.......................................................................................................................... 12
1.3 DIP Switch Settings..................................................................................................................................... 12
1.3.1Address Settings................................................................................................................................ 13
1.3.2 Baud Rate Settings............................................................................................................................ 16
1.3.3 Protocol Settings............................................................................................................................... 16
1.3.4 Communication Type Settings.......................................................................................................... 16
1.3.5 Terminal Resistor Connection Settings............................................................................................. 17
Chapter 2 Mount Selection........................................................................................................................................ 18
2.1 Long Wall Mount......................................................................................................................................... 18
2.2 Short Wall Mount......................................................................................................................................... 19
2.3 Corner Mount............................................................................................................................................... 20
2.4 Pole Mount................................................................................................................................................... 20
Chapter 3 Mounting Instructions............................................................................................................................... 21
3.1 Wall Mounting....................................................................................................................................... 21
3.1.1 Components............................................................................................................................... 21
3.1.2 Mounting with a Long Mount.................................................................................................... 22
3.1.3 Mounting with a Power Supply Box.......................................................................................... 23
3.2 Corner Mounting ................................................................................................................................... 24
3.2.1 Components............................................................................................................................... 24
3.2.2 Corner Mounting Instructions.................................................................................................... 25
3.3 Pole MountingApplications .................................................................................................................. 26
3.3.1 Mounting Components............................................................................................................... 26
3.3.2 Pole Mounting Instructions........................................................................................................ 28
Appendix 1 Lightning and Power Surge Protection ................................................................................................... 30
Appendix 2 RS485 Bus Connection............................................................................................................................ 32
Appendix 3 Wire Gauge Standards............................................................................................................................ 35

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Chapter 1 Installation and Settings
The following installation instructions are applicable to Hikvision IR speed domes, network IR speed
domes and network high-definition IR speed domes. Wall mounting is chosen as an example in this
chapter. Please refer to Chapter 3 for different types of mountings.
Note: Before installation, please make sure that the device in the package is in good condition and
all the assembly parts are complete.
Before you start:
1. For cement walls, expansion screws are needed for dome mounting. For wooden walls, you
need to mount the base with self-tapping screws. Please make sure that the wall is sturdy
enough to withstand more than 3 times of the weight of the dome and the bracket. If not, the
dome may fall and cause serious damage.
2. Please keep the wrappers after unpack the product. In case of any failure occurred, please
return the speed dome to the dealer with the original wrapper.
Note: Transportation without the original wrapper may result in damage to the speed dome and
extra cost.
1.1 Installation
Steps:
1. Position the mount to the wall and fasten the lock screws to secure it.
Figure1. 1 Wall Mount
2. Screw the fast-mounting adapter to the wall mount and tighten it. Fasten the set screw to
reinforce as shown in Figure 1.2

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Figure1. 2 Fasten the fast-mounting Adapter
3. Loosen both of the lock screws on the fast-mounting adapter, screw the top cover to the adapter
and fasten the lock screws with the L-shaped wrench.
Figure1. 3 Install the Top Cover
Figure1. 4 Fasten the Lock Screws
4. Tear off the protective sticker from the dome as shown in figure 1.2.5.

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Network High-definition IR Speed Dome (Network) IR Speed Dome
Figure1. 5 Tear off the Protective Stickers
5. Install the sealing loop or waterproofing and tie the safety lanyard to the dome.
Network High-definition IR Speed Dome (network) IR Speed Dome
Figure1. 6 Install the Sealing Loop
Network High-definition IR Speed Dome (Network) IR Speed Dome
Figure1. 7 Tie the safety lanyard
Protective
Sticker

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6. Hang the hanging hook on the dome bottom to the top cover. Pass the integrated cable through
the mount and the top cover, and connect it into the corresponding slots on the bottom circuit
board (For cabling, please refer to section 1.2 to see more details).
Network High-definition IR Speed Dome (network) IR Speed Dome
Figure1. 8 Hang the Dome to the Top Cover
7. Fasten the set screws to reinforce the mounting
Network High-definition IR Speed Dome (Network) IR Speed Dome
Figure1. 9 Fix the IR Speed Dome
1.2 Cabling
Note: Please turn off the power before cabling.
1.2.1 Cable Standards
1. Video Cable

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Please choose the video cables according to the transmission length. It should meet following
requirements: 75Ω resistance; 100% copper core conducting wire; 95% weaving copper shield.
2. For RS485 communication cables, please refer to Appendix 2
3. For 24V AC power cables, please refer to Appendix 3
For AC power supply, the maximum transmission distance (L(m)) is limited by the bare cable’s
cross-sectional area(S (mm²)) of the dome.
For IR speed dome, L (m) = 50 * S; while for network IR speed domes, L (m) =40 * S.
For example, if the cross-sectional area of bare cable is 1mm ², the transmission distance of IR speed
dome and network IR speed dome should not exceed 50m and 40m respectively.
1.2.2 Cabling Instructions
4. Internal cables
For analog cameras, all the internal cables have been connected to corresponding interfaces; for
network cameras, network cable, power cable and video output cable have been connected.
5. External cables
To connect external cables to corresponding equipment, please refer to the cable labels as shown in
Figure 1.10 and 1.11.
Figure1. 10 Analog Speed Dome Integrated Cables

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Figure1. 11 Network Speed Dome Integrated Cables
Take alarm input/output cabling for IR speed dome as an example:
Steps:
6. Open the head cover of the dome and find the alarm in/out terminals on the bottom circuit
board as shown in Figure1.12.
7. Find the alarm input/output cables. You can distinguish the cables by color and labels (Eg. Audio
output cable in orange with label “AUDIO_OUT”, please refer to Figure 1.10 and Figure 1.11 for
more information)
8. Remove the protective covering from the cable plug.
9. Connect the cable to the corresponding slot on the circuit board and secure the cable with lock
screws.
10. Connect the cables to the external alarm devices (See Figure 1.10 and Figure 1.11).

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Figure1. 12 Bottom Circuit Board of IR Speed Dome
Figure1. 13 Bottom Circuit Board of Network IR Speed Dome

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Figure1. 14 Bottom Circuit Board of Network High-definition IR Speed Dome)
1.2.3 Alarm Input /Output
Both the IR speed dome and network IR speed dome models support up to 7 alarm inputs
(0~12VDC), 2 alarm outputs and relay output (no voltage).
JQC-3FG
Relay
12VDC
GND OUT
L N
～220V AC
Relay Output
Dome
(10 A 250VAC)
Diagram (left) Diagram(right)
30mA
OUT(n)
OUT(n)
+
-
DC
DC Load
Relay Output
Dome OUT(n)
OUT(n)
Figure1. 15 Alarm Connections
To connect external alarm devices, external power supply is required as below:
1. For DC power supply (refer to the left diagram of Figure 1.16), input voltage should be within
12VDC, 30mA.
2. For AC power supply (right diagram), an external relay is required to avoid any potential danger.
1.3 DIP Switch Settings
There are two DIP switches SW1 and SW2 for address, baud rate and protocol settings.

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Note:
1. 485 serial port parameters of network high-definition IR speed dome should be configured in
OSD menu. You can login to client software or open IE browser and navigate to “Remote
Settings”to configure.
2. Default settings: Address code: 0;baud rate: 2400; 120Ωmatched resistor: OFF
Before you start:
Please remove the grounding screw from the circuit board if electromagnetic interferences exist.
Figure1. 16 Bottom Board of IR speed dome
1.3.1 Address Settings
There are 8 positions of switch SW1 for dome address settings. Set the position to “OFF”for value
“0”and “ON”for value “1”.
1
2
3
1. Address DIP Switch
2. Protocol DIP Switch
3. Address and Protocol Settings
4. Grounding screw
4

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Dome Address
SW1 Settings
1
2
3
4
5
6
7
8
0
ON
1 2 3 4 5 6 7 8
SW1
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
1
ON
1 2 3 4 5 6 7 8
SW1
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
255
ON
1 2 3 4 5 6 7 8
SW1
ON
ON
ON
ON
ON
ON
ON
ON
Table 1.1 Address Settings
For addresses 0-71, please refer to Table 1.2:
Dome
DIP Switch SW1-Address Settings
Address
1
2
3
4
5
6
7
8
0
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
1
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
2
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
3
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
4
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
5
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
6
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
7
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
8
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
9
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
10
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
11
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
12
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
13
ON
OFF
ON
ON
OFF
OFF
OFF
OFF
14
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
15
ON
ON
ON
ON
OFF
OFF
OFF
OFF
16
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
17
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
18
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
19
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
20
OFF
OFF
ON
OFF
ON
OFF
OFF
OFF
21
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
22
OFF
ON
ON
OFF
ON
OFF
OFF
OFF
23
ON
ON
ON
OFF
ON
OFF
OFF
OFF
24
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
25
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
26
OFF
ON
OFF
ON
ON
OFF
OFF
OFF
27
ON
ON
OFF
ON
ON
OFF
OFF
OFF
28
OFF
OFF
ON
ON
ON
OFF
OFF
OFF
29
ON
OFF
ON
ON
ON
OFF
OFF
OFF
30
OFF
ON
ON
ON
ON
OFF
OFF
OFF
31
ON
ON
ON
ON
ON
OFF
OFF
OFF
32
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
33
ON
OFF
OFF
OFF
OFF
ON
OFF
OFF
34
OFF
ON
OFF
OFF
OFF
ON
OFF
OFF

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35
ON
ON
OFF
OFF
OFF
ON
OFF
OFF
36
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
37
ON
OFF
ON
OFF
OFF
ON
OFF
OFF
38
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
39
ON
ON
ON
OFF
OFF
ON
OFF
OFF
40
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
41
ON
OFF
OFF
ON
OFF
ON
OFF
OFF
42
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
43
ON
ON
OFF
ON
OFF
ON
OFF
OFF
44
OFF
OFF
ON
ON
OFF
ON
OFF
OFF
45
ON
OFF
ON
ON
OFF
ON
OFF
OFF
46
OFF
ON
ON
ON
OFF
ON
OFF
OFF
47
ON
ON
ON
ON
OFF
ON
OFF
OFF
48
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
49
ON
OFF
OFF
OFF
ON
ON
OFF
OFF
50
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
51
ON
ON
OFF
OFF
ON
ON
OFF
OFF
52
OFF
OFF
ON
OFF
ON
ON
OFF
OFF
53
ON
OFF
ON
OFF
ON
ON
OFF
OFF
54
OFF
ON
ON
OFF
ON
ON
OFF
OFF
55
ON
ON
ON
OFF
ON
ON
OFF
OFF
56
OFF
OFF
OFF
ON
ON
ON
OFF
OFF
57
ON
OFF
OFF
ON
ON
ON
OFF
OFF
58
OFF
ON
OFF
ON
ON
ON
OFF
OFF
59
ON
ON
OFF
ON
ON
ON
OFF
OFF
60
OFF
OFF
ON
ON
ON
ON
OFF
OFF
61
ON
OFF
ON
ON
ON
ON
OFF
OFF
62
OFF
ON
ON
ON
ON
ON
OFF
OFF
63
ON
ON
ON
ON
ON
ON
OFF
OFF
64
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
65
ON
OFF
OFF
OFF
OFF
OFF
ON
OFF
66
OFF
ON
OFF
OFF
OFF
OFF
ON
OFF
67
ON
ON
OFF
OFF
OFF
OFF
ON
OFF
68
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
69
ON
OFF
ON
OFF
OFF
OFF
ON
OFF
70
OFF
ON
ON
OFF
OFF
OFF
ON
OFF
71
ON
ON
ON
OFF
OFF
OFF
ON
OFF
Table 1.2 Address Settings

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1.3.2 Baud Rate Settings
Positions 1-3 of SW2 are for baud rate settings. Set “ON”state for each position for values
“100”,”010”and “110”, representing 2400bps, 4800bps and 9600bps respectively. Please see below
table of baud rate setting pattern.
Note: For rates out of this range, default value 2400bps will be saved alternatively.
DIP Switch SW2-Baud Rate Settings
Baud Rate
Positions1-3 Settings
1
2
3
2400
ON
1 2 3 4 5 6 7 8
SW2
ON
OFF
OFF
4800
ON
1 2 3 4 5 6 7 8
SW2
OFF
ON
OFF
9600
ON
1 2 3 4 5 6 7 8
SW2
ON
ON
OFF
Table 1.3 Baud Rate Settings
1.3.3 Protocol Settings
Positions 4-6 of SW2 are used for protocol settings. Please Refer to Table 1.4 for details.
DIP Switch SW2-Protocol Settings
Protocol Type
Positions 4-6 Settings
4
5
6
Bosch Manchester
ON
1 2 3 4 5 6 7 8
SW2
OFF
ON
ON
AD Manchester
ON
1 2 3 4 5 6 7 8
SW2
ON
ON
ON
Self-adaptive
N/A
Table 1.4 Protocol Settings
Note:
1. Network speed domes does not support Manchester code protocol.
2. IR speed dome is self-adaptive to PELCO-D, PELCO-P, HIK-Code, VICON and KALATEL-32 protocols,
and network IR speed dome is self-adaptive to PELCO-P, PELCO-D and HIK-Code protocols.
Protocol settings are not applicable for both.
1.3.4 Communication Type Settings
Position 7 of SW2 is used for communication type settings. There are two types of communications,
simplex and half-duplex.
DIP Switch SW2-Communication Type Settings

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Types
Position 7 Settings
7
Simplex
ON
1 2 3 4 5 6 7 8
SW2
OFF
Half-duplex
ON
1 2 3 4 5 6 7 8
SW2
ON
Table 1.5 Communication Type Settings
1.3.5 Terminal Resistor Connection Settings
Position 8 of SW2 is used for terminal matched resistor settings
DIP Switch SW2-Terminal Resistor Connection Settings
State
Position 8 Setting
8
Not Connected
ON
1 2 3 4 5 6 7 8
SW2
OFF
Connected
ON
1 2 3 4 5 6 7 8
SW2
ON
Table 1.6 Matched Resistor Settings