Tektronix CMC251, User Manual

Page: 24 / 38

Reference
14
CMC251 User Manual
Table 9: Resolution for Pulse Measurements
GATE Setting Number of Events Averaged
X1 1 cycle
X10 10 cycles
X100 100 cycles
X1000 1000 cycles
Remote Control of Pulse-Width Measurements
The frequency counter normally measures the positive pulse width of
the applied signal. The negative pulse width can be measured with
the use of the external input connector on the rear panel. Refer to
Figure 4 for a setup diagram.
Signal source TTL Signal source
CMC251
To External Input
connector (on rear panel)
CHANNEL A
INPUT
Figure 4: Setup for Remote Control of Pulse-Width Measurements
1. Perform steps 1 through 5 of Making Pulse-Width Measurements
on page 13.