Width - GE USM 36 Series Technical Reference And Operating Manual

Setting the pulser (function group PULSER)

WIDTH

This function is only available if the option square-wave
pulser is chosen as pulser type (see Section Selecting
the pulser type, page 5-75).
You can use the function WIDTH to adjust the pulse
width for the square-wave pulser. You can adjust a val-
ue within the range of 30 ... 500 ns (nanoseconds) in
steps of 10 ns.
The following equation produces an approximation for
the suitable pulse width:
Nominal width in nanoseconds
= 500/probe frequency in MHz
For example, the equation for a 2.25 MHz probe results
in:
Nominal width in nanoseconds
= 500/2.25 ns = 222 nanoseconds
USM 36
N o t e
The pulser voltage and the pulse width can
be automatically limited, depending on the
pulse repetition frequency (see Section PRF
MODE (pulse repetition frequency),
page 5-16) setting. This function is used for
limiting the signal loss.
– Select the function WIDTH.
– Choose the required value.
Issue 2 (12/2013)
5 Operation
5-15