Tektronix 1503C, Руководство пользователя

Страница: 82 / 128

Options and Accessories
3–16
1503C MTDR User Manual
O
N
ac 1314.84 ft
O
F
F
O
F
F
O
F
F
Figure 3–19: System 2 - Another Group of Taps
(128 avg, 10 ft/div, 54.75 dB)
O
N
ac 1438.04 ft
O
F
F
O
F
F
O
F
F
Figure 3–20: System 2 - End of Cable
(128 avg, 20 ft/div, 61.25 dB)
Following are the specifications for the Ethernet board.
Characteristic Performance Requirement Supplemental Information
DC Termination 50 ,
"
1 See typical frequency response curve
below this table to estimate at other fre-
quencies. Once the termination is
turned on, it will remain on until specifi-
cally turned off by the operator, at which
time a warning to remove the 1503C
from the network will be shown on the
display. Leaving the TDR on the net-
work with the termination turned off will
cause traffic disruption and errors.
DC Voltage Offsets 0.0 V
"
0.02 V
-1.05 VDC and -1.7 VDC
"
0.15 V into 50
AC pulse voltage is present on top of
DC offsets while measuring. Voltages
only asserted when 50 termination is
on.
Electrical Characteristics