C&H Technologies, Inc. • 445 Round Rock West Drive • Round Rock, TX 78681-5012
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 Ω
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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