
C&H Technologies, Inc. • 445 Round Rock West Drive • Round Rock, TX 
(512) 
M217
Quad RS-232 
Interface
M Module
The M232 (formerly Agilent E2261A) provides four (4) completely independent 
Specifications:
Serial Port Characteristics:
Baud Rates: 75, 110, 150, 300, 600, 1200, 1800, 2000, 2400, 4800 9600, 19200, 38400
Data Length:  | 5, 6, 7, 8 bits  | 
Parity:  | None, Odd, Even,  | 
  | Always 1, Always 0  | 
Stop Bits:  | 1, 1.5 or 2  | 
Handshake Pace:  | |
Software:  | Xon/Xoff  | 
Hardware: DTR/DSR at beginning to pace, RTS/CTS during transfer to pace
General Characteristics:
Distance:  | 50 feet  | 
Isolation:None
I/O Buffer Memory:
2 Kbytes for each channel
Connectors:  | 44 pin DSUB  | |
  | 
  | (Female)  | 
Temperature:  | 
  | 
  | 
Operating:  | 0°C to 55°C  | |
Storage:  | ||
Power:  | +5V @ 0.1 A  | |
  | +12V  | @ 0.01 A  | 
  | @ 0.01 A  | |
Notice: Due to component heights this module will work in our VXI, Ethernet and LXI carriers. Its use in PCI, cPCI, VME, PXI may require keeping a second card slot open next to the carrier.
M Module Compliance
Complies with ANSI/VITA Std 12- 1996 for 
Data Transfers  | 16 bit  | 
InterruptsINTC
Compatible with VXI, VME, PCI, PXI, CPCI & Ethernet Carriers
Applications
•Terminal interfacing
•Peripheral Control
Ordering Information
Part Number  | 
Additional Information
User Manuals for C&H carriers and this module can be found on our website at www.chtech.com.