Installing the 1525 Pump
36
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2.3.3 Making IEEE-488 Connections
The 1525µ and 1525EF Pumps connect to the MassLynx workstation using IEEE-488
cables. Most chromatography devices are shipped with a 1-meter cable with
dual-receptacle connectors at each end. The MassLynx workstation ships with a 2-meter
cable with a dual-receptacle connector at one end and a single-receptacle connector
(GPIB) at the other end.
Note:
Before connecting the pump, refer to the IEEE-488 guidelines below.
IEEE-488 Guidelines
Follow these guidelines to install and use the system:
•
Keep all devices powered on while your system is in use.
•
While a system is active on the IEEE-488 bus, do not power on or off any other device
on the bus.
•
The maximum number of devices that can be connected together to form one
interface system is 15 (14 instruments plus the National Instruments GPIB card).
•
The maximum cable length to connect the devices and the GPIB connector in one
interface system is 2 meters (6.5 feet) times the number of devices, or 20 meters (65
feet), whichever is smaller.
•
The maximum cable length between two devices is 4 meters (13 feet).
•
The minimum cable length between two devices is 1 meter (3.25 feet).
Connecting IEEE-488 Devices
Note:
This procedure assumes that there are no other IEEE-488 devices (such as a
detector) electronically connected to the MassLynx workstation. If there are other devices
already connected to the workstation, connect the pump to the existing chain of devices
(see
). The order in which you connect IEEE-488 devices is not important.
To make the IEEE-488 connections for the MassLynx system:
1.
Connect the single-receptacle end of the 2-meter IEEE-488 cable to the National
Instruments GPIB card in the MassLynx workstation (
STOP
Attention:
Cable lengths greater than the maximum values or less than the minimum
values can cause IEEE-488 communication failures. Use the minimal cable lengths to
ensure proper signal transmission.
Summary of Contents for 1525M
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