HP 5501A Operating And Service Manual page 205

NOTE: In step 12, 4 069
%
4
096. A better approximation can be obtained by rounding upwards
to 4
096 and setting switches, thus:
Switches
5.11
10781A Pulse Converter Electronics Installation
NOTE
Do not confuse the 10781A Pulse Converter installation require-
ments with those of the 10764B Fast Pulse Converter. The 10764B
is a selectable part of the Computer Interface Electronics.
The 10781A Pulse Converter provides the simplest means of outputting position information to
existihg system controllers. The output consists of Up/Down or phase quadrature pulses of
one-quarter wavelength value. One pulse converter is required for each measurement axis.
Perform the installation procedures a s follows:
a.
Verify that the jumpers i n the 10781A Pulse Converter match your system configuration.
Refer to the 10781A Pulse Converter Operating and Service manual.
3.
If the 10781A Pulse Converters are to be rack mounted or installed in a cabinet, refer
to the 10781A Pulse Converter Operating and Service manual for dimensions and instal-
lation instructions.
c.
Connect the reference and measurement cable from the laser head and first receiver to
the applicable 10781A Pulse Converter (see Figures-77for a typical system interconnect).
d. Connect the additional legs of the cable to the remaining pulse converters.
e.
Connect 10781A to +5V power source.