6253 DC Voltage Current Source/Monitor Operation Manual
5.3.2 Precautions when Using GPIB
5-6
5.3.2 Precautions when Using GPIB
1. Do not use connection cables to measuring instruments or bus cables to controllers that are longer
than necessary. Ensure that these cables do not exceed 20 m in length. ADC CORPORATION offers
the following standard bus cables.
2. The bus cables have piggyback connectors. A piggyback connector has both a male connector and a
female connector by itself. The male and female connectors can be stacked on top of each other.
When connecting the bus cables, do not stack three or more connectors. Be sure to fix the bus cables
with clamping screws.
3. Check the power requirements, grounding conditions and setting conditions of each device before
turning it ON.
Be sure to turn ON all the devices connected to the bus. The overall system operation cannot be
guaranteed if any of the devices is not turned ON.
4. Connecting and disconnecting cables
Turn OFF all the devices before connecting or disconnecting the GPIB cables. Check that the chassis
of the devices on the bus are connected to each other and to the ground before connecting or
disconnecting any GPIB cables.
5. ATN interrupt during message transmission
If an ATN request interruption occurs during transfer of messages between the devices, the ATN has
priority and the previous status is cleared.
6. Up to 255 characters can be recognized in a single program command transmission.
An error occurs if the program command exceeds 255 characters.
7. Retain the REN line at Low for 5 ms or longer following the transmission of a command.
Table 5-2 Standard Bus Cable
Length Name
0.5 m 408JE-1P5
1 m 408JE-101
2 m 408JE-102
4 m 408JE-104
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