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Model
PC-HSICA High-Speed Serial Interface Card |
| Model
5E485 RS232-to-RS485 Adaptor Model 5E25 Male-to-Female Converter [Back
] |
The 5E485 is a special connector assembly for interfacing a network of 3500 and/or 4000 Series instruments with an external computer, terminal, or other device with RS232 I/O capability.
The 5E485's 25-pin RS232 port attaches directly to the 25-pin RS232 port of the external device. Since the 5E485's RS232 connector is male, a Model 5E25 25-Pin Male-to-Female Converter is also required to permit physical connection of the 5E485 to the external device. If, however, the 5E485 is to be attached to the RS232 port provided by a Model PC-HSICA High-Speed Serial Interface Card installed in an external computer, the DB25 gender converter is not required.
The
following diagram shows how the 5E485 and 5E25 are used to convert an instrument
network's standard RS485 interface levels to RS232. The 5E485's 4-pin
RS485 Interface & DC Power Port connects directly to the first network node
instrument. In many cases, the network power supply (if required) will also
be tied directly to this port (the power source should be 10 to 40 VDC; nominal
24 VDC is recommended). An external supply is required to power the 5E485,
unless the first network node is a 3500 Series instrument, in which case
the 3500 instrument's +12 V line may be used in place of an external supply.
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Multinode RS485 Communications |
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*
Gender conversion is not required with the Model
PC-HSICA |
| Model
10E422 RS232-to-RS485 Converter
[Back
] |
This
external adaptor lets you convert a 3500 or 4000 instrument's computer interface
port to RS422 standard, when that port is set for single-node (RS232)
communications.
The figure below shows how the 10E422 is used to link a 3500 or 4000 instrument to an external device with RS422 I/O capability. Baud rate and other protocols for the resulting RS422 interface are identical to those to which the instrument's RS232 port has been set.
A special Daytronic cable (No. 52505) must be ordered with the 10E422 when it is to be used with a 3500 or 4000 instrument. This cable makes the required pin-number and gender conversions.
A
six-foot power cord is supplied with every 10E422, with a switch-selectable
transformer that may be plugged into any standard source of 110 or 220 VAC (60
Hz). Model 10E422 dimensions (HWD in inches/cm) are 2.09/5.31, 3.25/8.26,
0.56/1.42.
|
Model 10E422 Connections |
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| Model
10CIF488A IEEE Interface Adaptor
[Back
] |
The
Model 10CIF488A enables any 3500 or 4000 instrument to be established as a
"Talker/Listener" peripheral on a standard IEEE-488 bus, with a
switch-selectable bus address from 0 through 30.
As shown in the figure below, the 10CIF488A consists of two separate units: the Model 10E422 RS232-to-RS422 Converter and the Model 10CLB488 IEEE-488-to-RS422 Interface Converter (shown in the photograph). The interconnecting RS422 cable must be supplied by the user (Daytronic Cable No. 52259 may be used for distances of up to 10 feet).
A special Daytronic cable (No. 52505) must be ordered with the 10CIF488A when it is to be used with a 3000 or 4000 instrument. This cable makes the required pin-number and gender conversions between the 10E422 and the instrument's computer interface port, when that port is set for RS232 communications.
Two
six-foot power cords are supplied with every 10CIF488A, one for the 10E422 and
one for the 10CLB488. Each cord has a switch-selectable transformer that
may be plugged into any standard source of 110 or 220 VAC (60 Hz). Model
10CLB488 dimensions (HWD in inches/cm) are 1.14/2.90, 9.05/22.99, 3.25/8.26.
|
Model 10CIF488A Connections |
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| Model
PC-HSICA High-Speed Serial Interface Card [Back
] |
This half-height card is recommended when an instrument or instrument network is connected to an external computer with limited input buffering. When installed in the computer, it makes available a DB25 RS232 port for asynchronous serial communication at 600, 1200, 2400, 4800, 9600, 19.2K, and 153.6K baud. Baud rate and other interface protocols may be completely specified via the DOS "MODE COM" or BASIC "OPEN COM" command, or through the Windows TERMINAL program.
With enhanced EMI filtering and transient suppression, the PC-HSICA is recommended for serial interchanges not only because of speed, but also because it furnishes a true hardware handshake, thus reducing the possible noise effects that can result from the use of a long interface cable.
The
PC-HSICA features receive and transmit FIFO's with 32-byte depth plus
"Receive FIFO Full" and "Carriage Return Detect" interrupt
capabilities. In addition, the card can be configured as a standard 16C650
UART with all its functional capability (requires optional driver).
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