ELECTRICAL
P1 AND P2 CONNECTOR
Connection to the host system is made at connectors P1 and P2. These connectors are electrically equivalent. Two connectors are provided to allow both analog input and analog output from host systems having individual input and output connectors.
ADJACENT CHANNEL JUMPERS
Adjacent channels may be connected together to provide an isolated output signal from an isolated input module, providing two levels of 1500V isolation. This capability is provided with the 15 jumpers labeled JP1 through JP15 on headers E1, E2, and E3. A simplified drawing of the OM5-
Example: Assume an
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P2 | P1 | JP1 |
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1 | 2 | 3 | 4 | 5 | 6 | |||
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| 5 |
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| 11 |
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| 13 |
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| 20 | VOUT | 20 | VOUT | 20 | VOUT | 20 | |
| VOUT |
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| 18 | VIN | 18 | VIN | 18 | VIN | 18 | |
| VIN |
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| CH 1 | CH 2 |
| CH 3 |
| CH 4 |
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FIGURE 3. |
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POWER
The
FUSING
The
GROUNDING
Figure 4 details the optional ground jumper configuration available on the
Jumper J1 connects the AGND shield wires (pins 3, 6, 9, 12, 15, 18, 21, and
24)to the backpanel signal ground. This provides a ground connection between the host system and backpanel. Jumper J1 is required if output modules are used, or if there is no high impedance sense input (input low of a differential or
Jumper J3 connects the SENSE line (pin 25) to the backpanel signal ground. If the host system has the capability, this allows measuring the
For proper operation of the output switch or
P2 | P1 |
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| 9 |
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| 12 |
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| 15 | AGND |
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| I/O COM 19 | 16 | PWR COM |
| 21 |
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| 24 |
| J3 | J4 |
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| 25 | Sense |
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| J2 | J1 | Power Common |
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| R1 | Signal Ground |
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| Grounding Bolt |
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FIGURE 4. |
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ground usually occur at the A/D or D/A converter of the host measurement system.
If the connection of power common and AGND shield wires exists in the host measurement system, an optional resistive connection between AGND and the backpanel signal ground can be made via R1. R1 can be as large as 10K ohms; 100 ohms is a recommended value. Jumper J2 can be used to connect the SENSE line to R1 when this ground configuration is used.
For full protection against large electrical disturbances on the
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