ASCOM Ascotel 2025 System Manual page 830

Tab. 4.34: Power available depending on the line length
Loop resistance R 20
Power available 2620
P . (mW)
max
Length (m) with:
0.4 mm wire ø 71
0.5 mm wire ø 111
0.6 mm wire ø 160
Admissible range for 2 terminals on the AD2 bus with an assumed max. line length of 700 m
Automatic Measuring of Line Length
If all of a terminal's LEDs are lit (e.g. team keys) and at the same time the terminal
rings with maximum volume, the power input is maximum. The power supply can
become critical depending on the line length:
• When connecting an Office terminal to the AD2 bus, the power input is auto-
matically determined, whereby all devices (Office XX, EKP, AKB) connected to
the bus are taken into account.
• The terminal displays the message "Power critical" if the power input is not
enough. The line length is precisely calculated at about 150 m and based on a
wire diameter of 0.5 mm.
• The text message can be deleted and the terminal can be operated nevertheless
under normal conditions.
HBT_20321104_04/B0_en
40 60 80 100
2492 2364 2236 2108
142 213 284 356
222 333 444 556
320 480 640 800
ascom
120 140 160 180
1980 1852 1724 1596
427 498 569 640
667 778 889 1000
960 1120 1200 1200
Ascotel 2025/2045/2065
200 220 240 260
1459 1343 1245 1160
711 782 853 924
1111 1200 1200 1200
1200 1200 1200 1200
Cabling Interfaces
280 300
1086 1021
996 1000
1200 1200
1200 1200
4.59