Rohde & Schwarz SCV8000E/R - CAN Bus Control Line; Interface Description; Internal Interfaces

Chapter 9 Annex
2104.6536.72 - 9.1 - E-1
1 Interface Description
1.1 Internal Interfaces
1.1.1 CAN Bus Control Line
The CAN bus control line provides the connection between the R&S SX801 exciter (X5) and
one or two amplifiers (X11).
Signal name Direction Range of values Contact Comment
GND 0 V X5.1/X11.1 Ground
GND 0 V X5.9/X11.9 Ground
GND 0 V X5.2/X11.2 Ground
AMPL_ERR Internal pull-up
Ri = 1000 
X5.10/X11.10 – 1000  vs. GND:
Sum fault amplifier
– Open: No error, ref-
erenced to GND
Reset 0 to 5 V,  5 mA
(optocoupler input on
amplifier)
X5.3/X11.3 High: Reset
VREF_PWR 0 to 5.5 V, refer-
enced to GND
R
L
= 20 k,
4 V = Nominal value
X5.4/X11.4 Reference voltage for
output power, refer-
enced to GND
PEAK_AV 0 to 5 V,  5 mA
(optocoupler input on
amplifier)
X5.12/X11.12 Switchover peak/aver-
age measurement
– High: "PEAK" posi-
tion
– Low: "AV" position,
referenced to GND
PWR_OUT 0 to 6 V, Ri = 6.6 k,
4 V with P
nom
X5.5/X11.5 Detector voltage for
output power, refer-
enced to GND
GND_AUX 0 V X5.13/X11.13 CAN ground
CAN_L CAN_L X5.6/X11.6 CAN low
CAN_H CAN_H X5.14/X11.14 CAN high
CAN_V+ +12 V ±1 V,
 500 mA
X5.7/X11.7 Power supply for CAN
modules, referenced to
GND_AUX, decoupled
via diode