Specifications

SPECIFICASPECIFICA
SPECIFICASPECIFICA
SPECIFICA
TIONS AND BUFFER OPTIONSTIONS AND BUFFER OPTIONS
TIONS AND BUFFER OPTIONSTIONS AND BUFFER OPTIONS
TIONS AND BUFFER OPTIONS
DXM SERIES MADXM SERIES MA
DXM SERIES MADXM SERIES MA
DXM SERIES MA
TRIXTRIX
TRIXTRIX
TRIX
INPUT and OUTPUT BUFFER MODULESINPUT and OUTPUT BUFFER MODULES
INPUT and OUTPUT BUFFER MODULESINPUT and OUTPUT BUFFER MODULES
INPUT and OUTPUT BUFFER MODULES
The DXM Series switching systems are built with input and output
buffer modules. Buffer modules are required to convert external
signals (such as ECL, PECL, LVDS, etc.) to CML levels that can
be handled by the solid state fabric at the heart of the switch. The
switch fabric outputs CML levels which are then converted by the
output buffers back to the original signal, or to a different signal
type (i.e., ECL in to LVDS out) if required by the end user.
Each buffer module handles 16 differential signals. Thus, for a
16x16 configuation, one input and one output buffer module are
required. Similarly, four input and four output buffer modules are
needed for a 64x64 matrix, while eight of each are needed for a
128x128.
LL
LL
L
VDS OUTPUT BUFFER MODULESVDS OUTPUT BUFFER MODULES
VDS OUTPUT BUFFER MODULESVDS OUTPUT BUFFER MODULES
VDS OUTPUT BUFFER MODULES
Buffer Module Densi-Shield Connectors
DXM-2
The DXM Series switches high speed differential signals such as
ECL, PECL, CML, LVDS, RS422 in a nonblocking (any input to
any output) and full fan out (any input to any or all outputs) configu-
ration. A solid state switch fabric is at the heart of the system.
The basic chassis holds the control module, power supplies
and switch fabric. The system is completed by adding the
required input and output buffers. The buffers provide signal
level transformations for the different signal types.
SPECIFICASPECIFICA
SPECIFICASPECIFICA
SPECIFICA
TIONSTIONS
TIONSTIONS
TIONS
Max. Data Rate (NRZ) 3.2 Gbps
Vdiff - Input Diff. Vpp 0.2 V min., 2.0 V max.
Vodiff - Output Diff. Vpp 0.5 V min., 0.8 V max.
Channel Propogation Delay 3.8 nsec. typ., 4.25 nsec max.
Ch-Ch Propogation Skew 75 psec typ., 125 psec max.
GndGndGndGnd
-1
+1
-2
+2
-3
+3
-4
+4
-5
+5
-6
+6
-7
+7
-8
+8
GndGndGndGnd
-9
+9
-10
+10
-11
-12
-13
-14
-15
-16
+11
+12
+13
+14
+15
+16
J1
J2
J2
I
O
ODD INPUTS
EVEN OUTPUTS
ODD OUTPUTS
EVEN INPUTS
0-14 16-30
32-46 48-62
64-78 80-94
96-110 112-126
1-15 17-31
33-47 49-63
65-79 81-95
97-111 113-127
0-14 16-30
32-46 48-62
64-78 80-94
96-110 112-126
1-15 17-31
33-47 49-63
65-79 81-95
97-111 113-127
MESA
CONTROL
INPUT/OUTPUT BUFFER SPECIFICAINPUT/OUTPUT BUFFER SPECIFICA
INPUT/OUTPUT BUFFER SPECIFICAINPUT/OUTPUT BUFFER SPECIFICA
INPUT/OUTPUT BUFFER SPECIFICA
TIONSTIONS
TIONSTIONS
TIONS
The CML Input Module AC couples all inputs and provides pull up
circuits to prevent unused inputs from floating and picking up
crosstalk from live adjacent signals. CML Output Modules accept
CML signals from the switch matrix crosspoint IC and pass them
on to the output Densi-Shield connectors.
FCI DENSI-SHIELD I/O CONNECTORS
Each buffer is built with two Densi-shield connectors, and each
connector handles eight differential pair signals as shown below.
These connectors can be wired out to optional patch panels that
provide BNC, SMA, Triax, etc., connectors.
CML INPUT/OUTPUT BUFFER MODULESCML INPUT/OUTPUT BUFFER MODULES
CML INPUT/OUTPUT BUFFER MODULESCML INPUT/OUTPUT BUFFER MODULES
CML INPUT/OUTPUT BUFFER MODULES
FF
FF
F
AST RS422 OUTPUT BUFFER MODULESAST RS422 OUTPUT BUFFER MODULES
AST RS422 OUTPUT BUFFER MODULESAST RS422 OUTPUT BUFFER MODULES
AST RS422 OUTPUT BUFFER MODULES
These modules are inteneded to work with typical RS422 signal
levels of 0 to 5 volts. Differential signals terminate into 100 ohms
across differential pairs. Vcc is typically 3.5 V for the inputs and 5
V for the output modules.
SPECIFICASPECIFICA
SPECIFICASPECIFICA
SPECIFICA
TIONSTIONS
TIONSTIONS
TIONS
Max. Data Rate (NRZ) 60 Kbps min., 40 Mbps max.
Voh - Output V High 3.4 V min.
Vol - Output V Low 0.4 V max.
Channel Propogation Delay 3.8 nsec. typ., 4.25 nsec max.
Ch-Ch Propogation Skew 75 psec typ., 125 psec max.
Work with typical LVDS signal levels of 1 to 1.4 volts. Differential
signals terminate into 100 ohms across differential pairs. Vcc is
approximately 3.0 V.
DXM/128x128 Expansion Chassis with Densi-Shield Signal
Connections
FOR TECHNICAL ASSISTFOR TECHNICAL ASSIST
FOR TECHNICAL ASSISTFOR TECHNICAL ASSIST
FOR TECHNICAL ASSIST
ANCEANCE
ANCEANCE
ANCE
, PLEASE CONT, PLEASE CONT
, PLEASE CONT, PLEASE CONT
, PLEASE CONT
AA
AA
A
CT CYTEC ACT CYTEC A
CT CYTEC ACT CYTEC A
CT CYTEC A
TT
TT
T
800-346-3117 OR VISIT OUR WEBSITE A800-346-3117 OR VISIT OUR WEBSITE A
800-346-3117 OR VISIT OUR WEBSITE A800-346-3117 OR VISIT OUR WEBSITE A
800-346-3117 OR VISIT OUR WEBSITE A
T cytec-ate.comT cytec-ate.com
T cytec-ate.comT cytec-ate.com
T cytec-ate.com
Max. Data Rate (NRZ) 60 Kbps min., 1.6 Gbps max.
Voh - Output V High 1.474 V max.
Vol - Output V Low .925 V min.
Vocm - Output Com Mode V 1.125 V min., 1.375 V max.
Vodiff - Output Diff. V 250 mV min., 450 mV max.
Channel Propogation Delay 3.8 nsec. typ., 4.25 nsec max.
Ch-Ch Propogation Skew 75 psec typ., 125 psec max.
ECL OUTPUT BUFFER MODULESECL OUTPUT BUFFER MODULES
ECL OUTPUT BUFFER MODULESECL OUTPUT BUFFER MODULES
ECL OUTPUT BUFFER MODULES
Max. Data Rate (NRZ) 60 Kbps min., 3.0 Gbps max.
Voh - Output V High -0.810 V max.
Vol - Output V Low -1.950 V min.
Io Output Current Continuous 50 mA
Channel Propogation Delay 3.8 nsec. typ., 4.25 nsec max.
Ch-Ch Propogation Skew 75 psec typ., 125 psec max.
SPECIFICASPECIFICA
SPECIFICASPECIFICA
SPECIFICA
TIONSTIONS
TIONSTIONS
TIONS
ECL modules are intended to work with typical ECL signal levels
of -1.8 to -0.8 volts. Differential signals terminate into 50 ohms
tied to -2 V. Vee is usually -5 V, while Vcc is GND.
SPECIFICASPECIFICA
SPECIFICASPECIFICA
SPECIFICA
TIONSTIONS
TIONSTIONS
TIONS