DS1044
to the output. The DS1044 output taps are selected and
connected to the interval counter by a VHF switch con-
trol unit. All measurements are fully automated with
each instrument controlled by the computer over an
IEEE 488 bus.
TEST SETUP DESCRIPTION
Figure 2 illustrates the hardware configuration used for
measuring the timing parameters of the DS1044. The
input waveform is produced by a precision pulse gener-
ator under software control. Time delays are measured
by a time interval counter (20 ps resolution) connected
DS1044 TEST CIRCUIT Figure 2
PULSE
GENERATOR
START
TIME INTERVAL
COUNTER
4
INPUTS
50Ω
STOP
VHF
UNIT UNDER
TEST
SWITCH
CONTROL
UNIT
OUT
50Ω
OUTPUTS 1–4
021798 3/6
DALLAS [ DALLAS SEMICONDUCTOR ]
