CH Tech Switch HF4x8 User Manual

C&H Technologies, Inc. 445 Round Rock West Drive Round Rock, TX 78681-5012  
(512) 733-2621 FAX (512) 733-2629 www.chtech.com  
HF4x8  
Switching Module  
The HF4x8 is a VMEbus compatible  
100 Mhz switching matrix with  
comprehensive  
Built-in-Test  
Equipment (BITE) capabilities.  
Modules may be joined in tree  
fashion via the top edge BNC  
connectors to create 8x8, 8x16,  
4x16, or 4x32 configurations (4  
signal highways maximum),  
maintaining the 100 Mhz bandwidth.  
Modules may be connected via the  
P2 connector to create 8x16, 8x24,  
8x32, 8x40, etc. configurations (4  
signal highways maximum at P2  
with stub disconnect relays), with  
some decrease in bandwidth. See  
Application Notes for details.  
VMEbus Compliance  
Complies with ANSI/IEEE Std 1014-  
1987  
Specifications:  
Characteristic Impedance:  
Bandwidth:  
50  
Configuration:  
True 4x8 matrix with 4 highways  
also switched to P2.  
A32/A24/A16:D16 DTB Slave  
No SYSFAIL  
100 Mhz  
No Interrupts  
Isolation:  
>40 db @ 100 Mhz  
>60 db @ 10 Mhz  
Relay Contacts:  
Max. Current, Resistive Load 0.25A  
Max. Voltage  
DC Resistive Load  
AC Resistive Load  
Max. VA, Resistive Load  
Typical Operating Time  
(including bounce)  
Max. Contact Resistance  
Initial  
IACKIN tied to IACKOUT  
BRX tied to BGX  
Insertion Loss: <1.0 db @ 100 Mhz  
50 V  
120 V  
4 VA  
<0.2 db @ 10 Mhz  
Form Factor: Size B  
Signal Connections:  
BNC  
1 ms  
Power:  
+5V @ 1.2 A typical  
+12V @ 0.12 A typical  
Applications  
0.2 Ω  
1.0 Ω  
End of Life  
Switching matrix for ATE  
Relay Live Expectancy:  
Rated Load Operation  
Dry Circuit Operations  
>3x106  
>1x108  
Ordering Information  
Signal switching for data  
acquisition  
Part Number:  
11026000-0001  
BITE:  
Signal switching for simulation  
Read-back capability of all relay  
driver states provides system check  
of entire board except for relay  
contacts.  
Description: HF 4x8 Switching Mod.  
Application Notes: 11026005-0001  
Systems signal control in a lab or  
development environment  
 

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