HP 61010A Owner's Manual page 36

LENGTH ■ contains 16 choices (13 are hidden) that allow
you to specify the size of the output data segment
(number of output bits) that will be active. The length can
vary in size from 1 bit to 16 bits. Use the arrows at the
bottom of the field to move the desired choice into the
center location. When a selection appears in the center
location, it automatically becomes active. To prevent
errors, always specify the length of the field before you
specify the start bit. If errors do occur, a message in the
Status Window will identify the type of error that has
occurred. Unspecified output bits will be set low if the
logic sense is positive, or high if the logic sense is
negative.
START - contains up to 16 choices (13 are hidden) that let
you specify the starting location or LSB of your output
data segment. Because this field works in conjunction with
the length field, your start choices are limited by the
length of your field. If you specify a length of one bit, you
have a choice of 16 start bits. If you specify a length of 16
bits, you only have a choice of one start bit (bit 0). This
prevents the previously specified length of the data
segment from being truncated.
To illustrate how the size of your output data segment
affects the legitimate output values that you can enter into
the output field, consider the following example. Suppose
that you specified an output segment with length of 4 bits.
These four bits can be positioned anywhere within the 16
bit word with the start field. Depending on the base, the
legitimate values that you can enter into the output field
are:
Decimal = integer values from -8 to +15
Octal - values from 0 to 17
Hexadecimal = values from 0 to F
Binary = values from 0000 to 1111
LOGIC SENSE
- formats the outgoing data as either
positive true logic, or negative true logic (output bits
inverted). When you point to and select this field, it
toggles between POSITIVE and NEGATIVE. The field
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