Agilent Technologies E4419B, User Manual

Page: 97 / 205

Power Meter Operation 2
E4419B Power Meter User’s Guide 75
Setting Window Limits
The power meter can be configured to verify the current measurement in
either window against predefined upper and/or lower limit values. The range
of values that can be set for the upper and lower limits and the default values
depends on the measurement units in the currently selected window, see
Table 2-6 .
The window based limits can also be set to output a TTL logic level at the rear
panel Rmt I/O port when the predefined limits are exceeded. You can switch
the rear panel TTL outputs on or off; set the TTL output level to active high or
low; and determine whether the TTL output represents an over limit
condition, under limit condition or both.
The TTL connector is an RJ-45 Series shielded modular jack assembly with the
TTL output pins connected as shown in
Figure 2-14 .
Table 2-6
Range of Values for Window Limits
Window Units Max Min Default
Max Min
+200 dB –180 dB 60 dB –120 dB
dBm +230 dBm –150 dBm 90 dBm –90 dBm
% 10.0 Z% 100.0 a% 100.0 M% 100.0 p%
W 100.000 XW 1.000 aW 1.000 MW 1.000 pW