Setting Up to Use the IEEE-488 Interface
The Model Z9216 supports the IEEE-488.1 (1978) interface standard. It also supports the required
common commands of the IEEE-488.2 (1987) standard.
Before attempting to communicate with the Model Z9216 over the GPIB interface, the Model Z9216
device address must be set. The address is set by the rear panel dip switch, SW2. The address may
be set between 0 and 30 by setting the binary value of the address on switches A0 to A4. Each
switch may have the value 0 (down) or 1 (up). The address is set by the formula:
Address = A0 +2*A1+4*A2+8*A3+16*A4.
Connect IEEE-488 cable (Dual Centronics 24-pin connector) to the IEEE-488 (GPIB) and secure
the connector by tightening the screw.
Optional Handler Interface
Introduction
The optional handler interface for the Model Z9216 allows the unit to be operated with external
hardware to measure and physically sort components. Data lines for ten sorting bins are provided, as
well as control lines (-START, -BUSY, -BDA) to coordinate measurements. See Chapter 4 for
information on bin setup procedures and options.
A timing diagram for the handler interface is shown in Figure 3-1. In the states labeled (a) in the
figure, the Model Z9216 is waiting for a trigger to start measuring. Previous bin data, if any, is still
available on the data outputs.
In the states labeled (b) in the figure, a negative going pulse on the –START line triggers a
measurement. The –BUSY line goes low and stay low until the measurement is completed.
In the states labeled (c) in the figure, after taking the measurement the Model Z9216 determines the
proper bin to place the component. During this time, the –BDA (bin data available) line is activated to
prevent reading invalid data. After the proper bin location has been selected, the –BDA line will go
high, and the appropriate bin line will be pulled low (only a single bin line will be low at any time). The
external handler can now remove the component, place it in the specified location, and insert a new
one into the fixture. The Model Z9216 returns to the states labeled (a).
Note: Some handlers can be programmed to remove the component under test to the sorting area as
soon as the –BUSY line goes high.
Mechanical Description
The handler interface is part of the Option 01 GPIB/Handler board and is accessed via a 25-pin
connector on the rear panel of the Model Z9216. A DB25 female connector, metal housing, and
sheath are provided to simplify construction of a cable to the external handler. The connector pin out
for the handler is shown in Table 3-4.
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