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Appendix C: Power Cord and Line Fuse Requirements for the Benchtop Mainframe
66
TLA 700 Series Installation Manual
For power usage in the nonshaded region of Figure 22, use either the power cord
with the 15 A plug (two parallel prongs and ground) or the power cord with the
20 A plug (two perpendicular prongs and ground). For high power usage
combined with low input line voltages (shaded region), use only the power cord
with the 20 A plug. Select the proper fuse based on the ranges shown in
Figure 22.
Power Consumption (Watts)
800
700
600
500
400
300
200
100
0
Input Line Voltage (Volts AC)
90 110
115
130 150 170 190 210 230 250
20AT Fuse
15AF Fuse
6.3AF Fuse
Power Cord with 20A plug (NEMA 5–20P) ONLY!
Power Cord with 15A plug (NEMA 5–15P)
Power Cord with 20A plug (NEMA 5–20P)
Figure 22: Power cord identification chart
For example, assume that your configuration consists of four TLA 7M4 Logic
Analyzer Modules and one TLA 7E2 DSO Module. Also assume that you will
be operating the mainframe at 90 VAC.
Add 40 watts (for the controller) + 81 watts (for the DSO Module) + 4 X
115 watts (for the logic analyzer modules) to come up with a total value of
581 watts. Because the power consumption (at 90 VAC) is approaching the
shaded area of the graph in Figure 22, you should consider using the 20A power
cord.