for purchasing your new Cheetah signal routing equipment from PESA. We
appreciate your confidence in our products. PESA produces quality, state-of-the-art equipment
designed to deliver our users the highest degree of performance, dependability and versatility
available anywhere. We want you to know that if you ever have a concern or problem with a
PESA product, we have a team of engineers, technicians and customer service professionals
available 24/7/365 to help resolve the issue.
Our commitment is to continue earning the trust and confidence of our customers throughout the
industry by incorporating cutting-edge technology into the highest quality, most cost effective
products on the market. And we would like to invite you to tell us how we’re doing. If you have
any comments or suggestions concerning your PESA equipment, please contact our Customer
Service Department.
Again thank you for choosing a PESA product and we look forward to a long-term partnership
with you and your facility.
S
ERVICE AND ORDERING
A
SSISTANCE
PESA Switching Systems
103 Quality Circle, Suite 210
Huntsville AL 35806 USA
and/or other countries.
No part of this publication (including text, illustrations, tables, and charts) may be reproduced, stored in any retrieval system, or
transmitted in any form or by any means, including but not limited to electronic, mechanical, photocopying, recording or otherwise,
without the prior written permission of PESA.
All information, illustrations, and specifications contained in this publication are based on the latest product information available at the
time of publication approval. The right is reserved to make changes at any time without notice.
Proprietary Information of PESA Switching Systems iii
F
IGURE
4-1 C
HEETAH
F
IGURE
4-2 C
HEETAH
F
IGURE
4-3 C
HEETAH
F
IGURE
4-4 C
HEETAH
F
IGURE
4-5 C
HEETAH
F
IGURE
5-1 C
HEETAH
F
IGURE
5-2 C
HEETAH
F
IGURE
5-3 C
HEETAH
F
IGURE
5-4 64NE, 64XE,
D
ESCRIPTIONS (REAR VIEW
F
IGURE
5-5 C
HEETAH 64 SERIES INPUT/OUTPUT SIGNAL CONNECTORS (REAR VIEWS
F
IGURE
6-1 C
ABLES ATTACHED TO SUPPORTS
F
IGURE
6-2 P
OWER SUPPLIES CONFIGURATION
F
IGURE
7-1 3500 S
F
IGURE
8-1 C
HEETAH 64 SERIES CHASSIS POWER SUPPLY LOCATIONS (FRONT VIEWS
F
IGURE
8-2 P
OWER SUPPLY
F
IGURE
8-3 I
NPUT/OUTPUT SIGNAL CONNECTORS (REAR VIEW
F
IGURE
8-4 3500 S
F
IGURE
8-5 64X64 V
F
IGURE
8-6 64X64 V
F
IGURE
8-7 M
ATRIX FRAME CONTROLLER
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
F
IGURE
8-8 8-C
8-9 MFC D
8-10 RS-232 C
8-11 RS-422 COM 3/PRC C
8-12 S
8-13 A
8-14 PRC L
8-15 RS-422 S
8-16 RCP P
8-17 RS-485 C
8-18 N
8-19 E
8-20 T
8-21 F
8-22 A
8-23 H
9-1 64 S
HARACTER DISPLAY
YSTEM CONTROL ALARM CONNECTOR
LARM CABLE SETTING AND ASSOCIATED SCHEMATIC
ETWORK CONNECTORS
THERNET CONNECTOR
YPICAL MATRIX FRAME CONTROLLER CARDS LOCATIONS, SLOT A AND SLOT
RAME AND SYSTEM CONTROL ALARM CONNECTOR
LARM CABLE CONNECTION AND CIRCUIT SCHEMATIC
OUSE SYNC INPUT (REFERENCE) CONNECTORS
ERIES FAN ASSEMBLIES AND ASSOCIATED POWER CONNECTIONS
CHEETAH 64SERIES -TABLES
TABLE OF FIGURES
64NE F
64NE R
64XE
64XE
64XE
64NE C
64XE
64NE, 64XE,
ERIES CARD DIPSWITCH LOCATIONS (SET FOR
ERIES SYSTEM CONTROLLER BOARD ASSEMBLY (FRONT VIEW
6-1 AC P
7-1 3500 S
8-1 P
8-2 I
8-3 O
8-4 3500 S
8-5 64X64 V
8-6 M
8-7 8-C
8-8 COM1
8-9 PESA CPU L
8-10 COM 3/PRC P
8-11 E
9-1 P
9-2 M
9-3 O
9-4 I
10-1 E
Proprietary Information of PESA Switching Systems v
Chapter 1 ABOUT THIS MANUAL
CHEETAH 64SERIES –CHAPTER 1
81-9059-0577-0 Rev. E
1.1 D
1.2 W
OCUMENTATION AND SAFETY OVERVIEW
This manual provides detailed instructions for the installation, operation, and maintenance of the
PESA Cheetah Series Switchers.
It is the responsibility of all personnel involved in the installation, operation, and maintenance of
the equipment to know all the applicable safety regulations for the areas they will be working in.
Under no circumstances should any person perform any procedure or sequence in this manual if
the procedural sequence will directly conflict with local Safe Practices. Local Safe Practices
shall remain as the sole determining factor for performing any procedure or sequence outlined
in this document.
Additionally, internal access to the frame compartments of the equipment that is described in
this manual is restricted to qualified service personnel only.
ARNINGS, CAUTIONS, AND NOTES
Throughout this document, you should notice various Warnings, Cautions, and Notes. These
addendum statements supply invaluable information pertaining to the text that they address. It is
imperative that audiences read and understand the statements to avoid possible loss of life, personal
injury, destruction/damage to the equipment, and/or added information that could enhance the
operating characteristics of the equipment (i.e., Notes). The following subsections represent a
description of the Warnings, Cautions, and Notes statements contained in this manual:
1.2.1 WARNING
Warning statements identify conditions or practices that can result in loss of
life or permanent personal injury if the instructions contained in the
statement are not complied with.
1.2.2 CAUTION
Caution statements identify conditions or practices that can result in
personal injury and/or damage to equipment if the instructions contained in
the statement are not complied with.
1.2.3 NOTE
Notes are for information purposes only. However, they may contain
invaluable information important to the correct installation, operation,
and/or maintenance of the equipment.
Proprietary Information of PESA Switching Systems 1-1
CHEETAH SERIES SWITCHERS –CHAPTER 2
Chapter 2 CHEETAH 64SERIES INTRODUCTION
81-9059-0577-0 Rev. E
2.1 C
Cheetah 64 series switchers are full-featured video matrix switchers capable of handling Serial
Digital Interface (SDI) and High-Definition Television (HDTV), as well as other non-standard
digital signals, in the same frame. Copper and optional fiber input and output modules provide for
maximum flexibility.
2.2 C
Additionally, PESA offers analog cards for the Cheetah 64 series switchers, which will allow users
to maintain legacy equipment during the transition to digital or single-ended, general purpose
NTSC video transmission applications such as video data for telemetry, radar, surveillance, highlevel TTL video switching, and 75Ω audio. The analog inputs can accept signals from DC to the –
3dB roll-off at 50 MHz with voltages up to ±2V standard and ±5V for high level.
To maximize the analog offering for the Cheetah 64 series, all frame sizes (64NE, 64XE, and
64WE) will accept analog matrix and I/O cards. Cheetah 64 series system configurations will
allow partitioning for either all analog or all digital cards to reside in the same frame in blocks of
64x64 and 64x128. The 64NE, 64XE, and 64WE frames can be configured for either all digital or
all analog.
The following types of analog I/O cards are available:
HEETAH 64 SERIES PRODUCT OVERVIEW
HEETAH 64 SERIES SWITCHERS ANALOG SUPPORT
• Basic analog input cards, output cards, and matrix cards with maximum bandwidths of 50
MHz.
• Analog input cards and an output cards for high-level signals to support telemetry or other
types of sine wave signals with voltage levels to a maximum of ±5V p-p.
Basic analog output cards and the High-Level cards will accept the optional dual-output, piggyback
cards.
The frame architecture for the analog model uses common components from sister HD/SD frames,
thus allowing for easy future migration to full digital. Power supplies and matrix control cards are
the same for Cheetah 64 series analog versions.
Proprietary Information of PESA Switching Systems 2-1
CHEETAH SERIES SWITCHERS –CHAPTER 2
81-9059-0577-0 Rev. E
2.3 C
HEETAH 64 SERIES SWITCHERS FEATURES
2.3.1 Cheetah 64 Series Switchers Features Overview
All Cheetah 64 series (64NE, XE, and WE) video matrix switchers offer alarm support, switch
confirmation, block checking, and power-out-of-range indicators. A key feature of the 64NE and
64WE switchers is the Matrix Watchdog™ redundant crosspoint (matrix) option. For critical
routing requirements of live, on-air situations or other critical distribution facilities, a redundant
crosspoint can be added to automatically swap over in case of failure. This feature is offered as
an option in our basic configurations. The Watchdog™ option includes monitoring capabilities
to alert personnel of a crosspoint failure.
The Cheetah 64XE is an extremely flexible routing switcher that can be configured in three ways.
First, the 64XE expands outputs for a basic 64X128 configuration similar to the 64WE model.
Next, the 64XE is offered as a 64X64 that offers output option slots for in-frame format
conversion cards. In this configuration, three options are available:
• HD to SDI down-conversion,
• SDI to Composite Analog Video (DAC)
• Fiber Outputs
• Dual Outputs
The 64XE is further enhanced with an option to support either internal fiber or coax I/O. Finally,
for those applications that require only a portion of the frame to be configured for output options,
the 64XE is flexible enough to accommodate the following three additional sizes:
• 64x80: Output options for 17-64 (first option slot used for 65-80)
• 64x96: Output Options for 33-64 (first two option slots used for 65-96)
• 64x112: Output Options for 49-64 (first three options slots used for 65-112)
The 64WE includes non-expandable outputs (similar to the 64NE) with output options (similar to
the 64XE) and has redundant crosspoints.
2.3.2 Cheetah 64 Series Switchers Standard Features
The Cheetah 64 series features include:
• Compact 4RU for the 64NE configuration; 6RU for the 64WE and 64XE configurations
• Full feature control system using either standard PESA PRC Control or PESA Network
Control (PERC2000, 3500Pro or 3500Pro-LE)
• Video and data signals from 3Mb/s to 1.48Gb/s
• Optional Fiber Input and Output cards for the 64XE and 64WE frames
Proprietary Information of PESA Switching Systems 2-2
CHEETAH SERIES SWITCHERS –CHAPTER 2
81-9059-0577-0 Rev. E
•Supported signal types:
SD/HD/3G Multirate from 143Mbs up to 3.0Gbs
SDI and ASI
Composite Analog Video
AES 75Ω Audio
TTL
ASI/EBU
• Compatible with SMPTE 259M, 292M, 372M and 424M TV standards
• Input EQ to 300M SD, 100M HD
• Bypass mode for non-standard data signals (143.0Mbs to 3.0Gbs)
• Output option slots support dual output, fiber output, DAC module for SDI conversion to
analog outputs, SD Converter, and HD to SDI converter (down converter)
• Supports for SNMP monitoring and diagnostics
• Full redundant controllers available
• All modules are hot-swappable for on-air maintenance
Proprietary Information of PESA Switching Systems 2-3
CHEETAH 64SERIES –CHAPTER 3
81-9059-0577-0Rev. E
Chapter 3 CHEETAH 64SERIES CONFIGURATION MATRIX
3.1C
This section includes a list of all of the major components for the Cheetah 64NE, 64XE, and 64WE
Video Matrix Switchers chassis/frames (models).
When discussing output options and expandable outputs, the meanings are as follows:
Table 3-1 includes only the active cards that are required for the individual Cheetah 64 series
chassis configurations. The blank covers (if necessary) are required for the card locations that are
not used (to satisfy chassis component cooling requirements).
Table 3-2 includes PESA part numbers for the corresponding Cheetah 64 Series cards, power
modules, and other components
HEETAH 64 SERIES CONFIGURATION MATRIX OVERVIEW
•Output Options pertains to which cards can go into a particular output slot in the frame for a
specific configuration(s). This includes cards that offer signal expansion or conversion such
as dual outputs, HD to SDI down-conversion, Digital to Analog conversion, and electrical
(copper) to fiber conversion. Option cards are offered as “piggy-back” modules that plug
onto the base output combiner card.
•Expandable Outputs pertains to the number of outputs that a particular frame can be
expanded beyond the basic configuration (e.g., 80, 96, 112, or 128 outputs).
Proprietary Information of PESA Switching Systems 3-1
CHEETAH 64SERIES –CHAPTER 3
81-9059-0577-0Rev. E
CHEETAH
64SERIES
FRAME
64NE
(64x64)
64XE
(64x64)
64XE
(64x128)
3.2 C
Power
Supplies
2 2
2 2
2 2
HEETAH 64 SERIES CHASSIS CONFIGURATIONS
Table 3-1 contains values for the maximum card/module configurations for
the Cheetah 64 series frame sizes.
T
ABLE
3-1 Cheetah 64 Series Active Components Matrix
COMPONENT SELECTION REQUIREMENTS AND MAXIMUM QUANTITIES
Matrix
Frame
Controller
Matrix*
Card
1 +
Matrix
Watch
dog
1
2
Input
Buffer
HDMR
Input
Buffer
Fiber
Input
Buffer
Cards
(SDI)
Output
Combiner
(SDI)
4 4 4 4 4 0 0 0 0 0
4 4 4 1 to 8 1 to 8 0 to
4 4 4 1 to 8 1 to 8 0 to 4 0 to 4 0 to 4 0 to 4 0 to 4
Output
Combiner
HDMR
Output
Option
Fiber
4**
Output
Option
DAC SD
0 to
4**
Dual
Output
Option
BNC
Output
Option
HD to
SD
0 to 4** 0 to
4**
Output
Option
HD-MR
to SD
0 to
4**
64WE
2 2
1 +
Matrix
Watch
dog
4 4 4 4 4 4 4 4 4 4
* = Matrix “Crosspoint” Card
** = Dependant upon configuration (64x64, 64x80, 64x96, 64x112, or 64x128)
The basic configuration features of the three Cheetah Series models are as follows:
• 64NE: non-expandable outputs, no output options, and redundant crosspoints (matrix cards).
• 64XE: expandable to 64x128 outputs, with output options, and no redundant crosspoints.
• 64WE: non-expandable outputs, with output options, and redundant crosspoints.
Proprietary Information of PESA Switching Systems 3-2
CHEETAH 64SERIES –CHAPTER 3
81-9059-0577-0Rev. E
3.3 C
HEETAH 64 SERIES CHASSIS COMPONENT PART NUMBERS
Refer to Table 3-2.
T
ABLE
3-2 Cheetah 64 Series Chassis Component Part Numbers
S
TANDARD MAINFRAME COMPONENTS
81906526750 64NE Mainframe Assembly
81906526900 64WE Mainframe Assembly
81906526760 64XE Mainframe Assembly
81906523810 Power Supply
81903469040 Power Supply (blank)
81906523970 Frame Controller Cards
PERC 2000 CONTROL
81901703760 Cheetah HD to SD Output Converter
81906524920 Cheetah Dual Output, Analog, BNC
81906524940 Cheetah Dual Output, TTL, BNC
P
OWER AND OTHER COMPONENTS
81903469070 Cheetah Input Blank
81903469060 Cheetah Output Blank
81906523980 Cheetah HD Dummy Load Card
81906523810 Cheetah Power Supply, AC
81903469040 Cheetah Power Supply Blank
81906523970 Cheetah Frame Controller Card
M
ATRIX CARDS
CH-MATRIX64-3G Cheetah Matrix 72X72 Digital - 3Gb bandwidth
81906523330 Cheetah Matrix 64x64 Digital Video
81906523980 Cheetah HD Dummy Load Card
81906524340 Cheetah Matrix 64X64 Analog Video
Proprietary Information of PESA Switching Systems 3-4
Matrix (Crosspoint)
Pow
er
System
Matrix Frame
CHEETAH 64SERIES –CHAPTER 4
81-9059-0577-0Rev. E
Chapter 4 CHEETAH 64SERIES VIEWS AND SPECIFICATIONS
There are two chassis’ sizes that house the Cheetah 64 Series switchers, which are the 6RU and 4RU
chassis. The 64XE and the 64WE are housed in a 6RU chassis and the 64NE is housed in the 4RU
chassis. This section will pictorially display the internal layouts of the switchers, depict the connections,
and list the system specifications.
This section will be subdivided into the following subtopics:
• Cheetah 64NE Frame Views
• Cheetah 64XE and 64WE Frame Views
• Cheetah 64NE, 64XE, and 64WE Specifications
4.1 C
HEETAH
64NE F
RAME VIEWS
(For the Cheetah 64NE frame views, see Figures 4-1 and 4-2).
I/O Cards
Fans
(I
Supplies
SOMETRIC VIEW
)
Cards
Controllers
Proprietary Information of PESA Switching Systems 4-1
(F
RONT VIEW
F
IGURE
)
4-1 Cheetah 64NE Front Views
Controllers
System Control Alarm
Frame Control Alarm
S
(+)
CHEETAH 64SERIES –CHAPTER 4
81-9059-0577-0Rev. E
AC In
Fan
Fan
Outputs
Inputs
Output #1 Output #64
Input #1
Input #64
Com #3 PRC
(-)
S
Com #1
PRC Loop
RCP Panel Port #1
RCP Panel Port #2
Reference Input #1
F
IGURE
4-2 Cheetah 64NE Rear View
Com #2
Output
Output
Reference Input #2
Frame Controller Ethernet
(-)
(+)
Proprietary Information of PESA Switching Systems 4-2
Frame
Controllers
Matrix (Crosspoint)
Cards
System
Controllers
CHEETAH 64SERIES –CHAPTER 4
81-9059-0577-0Rev. E
4.2C
(For the Cheetah 64XE and 64WE frame views, see Figures 4-3 through 4-5).
HEETAH
64XE
AND
64WE F
Power Supplies
RAME VIEWS
I
SOMETRIC VIEW
F
RONT VIEW
F
IGURE
Proprietary Information of PESA Switching Systems 4-3
4-3 Cheetah 64XE and 64WE Frame (Front Views)
*65 80*
1
96*
32
16
112*
48
128*
64
*81
17
*97
33
*113
49
1
17
33
49
16
32
48
64
Outputs
Inputs
Fans
AC In
CHEETAH 64SERIES –CHAPTER 4
81-9059-0577-0Rev. E
See Figure 4-5
Outputs
Inputs
(Cheetah 64XE shown above)
*= The 64WE Switcher may contain blank panels where the 65 thru 128,
81 thru 96, 97 thru 112, and 113 thru 128 output BNC connectors are in
place for the 64XE Switcher. The 64WE switcher can be configured
with blank panels or option cards as per customer configuration
request.
F
IGURE
Proprietary Information of PESA Switching Systems 4-4
4-4 Cheetah 64XE and 64WE Inputs/Outputs
System Control Alarm
Frame Control A
larm
S
(+)
(-)
S
Com #1
PRC Loop
RCP Panel Port #1
RCP Panel Port #2
Reference Input #1
Com #3 PRC
CHEETAH 64SERIES –CHAPTER 4
81-9059-0577-0Rev. E
Com #2
Output
(-)
Output
Reference Input #2
Frame Controller Ethernet
(+)
F
IGURE
4-5 Cheetah 64XE and 64WE Rear Connector View
Proprietary Information of PESA Switching Systems 4-5
CHEETAH 64SERIES –CHAPTER 4
81-9059-0577-0Rev. E
4.3 C
Physical
RUs:...........................................................................................4 (64NE) & 6 (64XE and 64WE)
Crosstalk:.................................................<± -60 dB to 5.0 MHz (All Inputs and Outputs Hostile)
....................................................................................................................<± -35 dB @ 35 MHz
High-Level Analog Video Signal to Noise
Signal to Noise:......................................................-70 dB, RMS Noise to P-P Signal to 5.0 MHZ
Proprietary Information of PESA Switching Systems 4-10
Chapter 5 CHEETAH 64SERIES INITIAL SETUP
This section will describe the initial unpacking, site-selection procedures/sequences, and settings
for the Cheetah 64 Series switchers.
5.1 U
NPACKING AND INSPECTION
This equipment contains electrostatic sensitive devices (ESD). Use a grounded
wrist strap, grounding mat, and/or comply with local established ESD
procedures when handling the internal circuit cards to prevent destruction
from electrostatic discharge.
Immediately upon receipt, inspect all shipping containers. Carefully unpack the equipment and
compare the parts received against the packing list. If any parts appear to be missing or damaged,
please contact PESA immediately.
CHEETAH 64SERIES –CHAPTER 5
81-9059-0577-0Rev. E
5.2G
The physical size of each Cheetah Series Switcher chassis is determined by the chassis input/output
capabilities (i.e., the 64NE chassis is the smallest while the 64XE and 64WE chassis are the
largest). If specified when ordered, each Cheetah Switcher will be configured for the intended
system at the factory. Before attempting to install any frame, matrix card, controller card, or power
supply, carefully read and understand this section.
5.3 C
This equipment is designed for installation in a standard 19" equipment rack located in an
environment conforming to the specifications for each chassis. Locate each unit as closely as
possible to its associated equipment to minimize cable runs.
Consider the connection from this equipment to the supply circuit, and the effect that possible
overloading can have on overcurrent protection circuits and supply wiring. Refer to nameplate
ratings when addressing this concern.
ENERAL CHASSIS INSTALLATION OVERVIEW
All Cheetah Switchers contain electrostatic sensitive devices (ESD). Care
should be used when it is necessary to handle the internal circuit cards. It is
recommended that a grounded wrist strap and grounding mat be used before
attempting any equipment installations.
HOOSING A LOCATION
For local electrical compliance, this equipment shou
socket-outlet, power strip (if plugs are used), or the supply
disconnect/breaker so that the AC line cord plugs or the supply disconnect
are easily accessible.
ld be located near the
Proprietary Information of PESA Switching Systems 5-1
and 64WE chassis weigh 90 lbs nominal (dependant on the configuration).
CHEETAH 64SERIES –CHAPTER 5
81-9059-0577-0Rev. E
5.4M
The mounting configurations for each chassis differ slightly because of physical size and weight.
The 64NE chassis is 4-Rack Units (RU) in height while the 64XE and 64WE chassis are 6RU in
height.
OUNTING A CHEETAH
64NE, 64XE,
AND
64WE C
HASSIS IN AN EQUIPMENT RACK
The weight of a fully loaded 64NE chassis is 60 lbs nominal while the 64XE
Installation or removal of this equipment requires at least two persons in
order to avoid possible personal injury or equipment damage. Install this
equipment in such a manner as to avoid any tipping hazard from uneven
loading of the rack.
Make sure that all power is disconnected (Lockout/Tagout) before installing
the specific frame into the rack.
Fans that are mounted on this equipment provide forced-air cooling. Do not
block airflow around these fans. Replace all service panels and blank filler
plates. Keep the chassis door closed during normal operation.
This equipment is designed for installation in a standard 19" equipment rack. Provide sufficient
space behind the equipment racks to allow for control, signal, power cables, and free airflow after
all cables are installed. Use all chassis mounting holes and tighten mounting hardware securely
by using the rack equipment manufacturer’s suggested torque settings.
Install the equipment into the rack as follows:
1. Carefully, remove the equipment from the packing container and place the unit near the
rack where it will be installed.
2. Insert the chassis into the equipment rack and support the bottom of the chassis while the
mounting hardware is being installed.
3. Install the bottom two chassis mounting screws.
4. Install the top two chassis mounting screws.
5. Install any remaining chassis mounting screws.
6. Tighten all of the chassis mounting screws until they are secure. Release/remove the
support from the bottom of the chassis.
Proprietary Information of PESA Switching Systems 5-2
CHEETAH 64SERIES –CHAPTER 5
81-9059-0577-0Rev. E
5.5 S
ETTING CHEETAH
64NE, 64XE,
AND
64WE C
HASSIS LEVEL CODES (STROBES
)
This subsection will be divided into the following two subtopics:
• Cheetah 64NE Chassis Strobe Switch Locations and Settings
• Cheetah 64XE and 64WE Chassis Strobe Switch Locations and Settings
Set the level codes (strobes) BEFORE installing the matrix frame controller
card.
To set the level codes for all Cheetah Series chassis, use the rotary switches to define a
hexadecimal number. Use the settings in the LSB row (lower row) first. For example, to set the
Level Strobe to 12, set the LSB Level Strobe switch to C. Switch functions are described in the
corresponding Table for the specific chassis. You must ensure that these settings match the
settings in the System Controller Software.
If specified by the customer when ordering, these switches will be set at the
factory; however, the customer can adjust them as required for system
expansion.
Proprietary Information of PESA Switching Systems 5-3
CHEETAH 64SERIES –CHAPTER 5
5.5.1 Cheetah 64NE Chassis Strobe Switch Location and Settings
Prior to adjusting any of the chassis strobe switches, it is strongly
recommended that you contact PESA’s Customer Service Department for
assistance.
For the 64NE chassis Strobe Switch location and settings, see Figure 5-1.
81-9059-0577-0 Rev. E
MSB
Level
LSB
0
1
F
2
E
D
3
4
C
B
A
E
D
C
B
A
S1
5
6
9
7
8
0
1
F
2
3
4
S2
5
6
9
7
8
MSB
Output
S1 = 0
S2 = 1
S3 = 0
S4 = 0
S5 = 0
S6 = 0
S7 = Not Used or Installed
S8 = 7