Rohde & Schwarz R&S ZN-Z3x, User Manual

Page: 11 / 62

Putting the System into Operation
R&S
®
ZN-Z3x
11 User Manual 1177.6381.02 ─ 03
●
Shut down the instrument; see Chapter 2.3.5, "Switching the ICC Off" ,
on page 18.
CAN 1,2
Two independent CAN bus interfaces for control connection and
power supply of Inline Calibration Units, see
Chapter 2.4, "Connect-
ing ICUs" , on page 18.
The CAN bus voltage supplied by the R&S ZN-Z30 is +24 V with a
maximum current of 1.8 A. The Inline Calibration Units will report an error if the
supply voltage is too low (e.g. due to excessive bus length).
Table 2-1: CAN 1,2 pin assignment
Contact Description Value Range
1 (northwest) CAN_HIGH 0 ... +5.5 V
2 (southwest) CAN_LOW 0 ... +5.5 V
3 (southeast) +24 V supply voltage 0 ... +24.5 V
4 (northeast) Ground 0 V
The color of the LED above the connectors indicates the state of the respective
CAN bus:
●
red: bus not working (e.g. no Inline Calibration Unit connected) or in error
state
●
blue: bootloader mode (temporary state)
●
pink: calibration data alignment between Inline Calibration Units and Inline
Calibration Controller (temporary state)
●
green: error-free operation
2.1.2 Back Panel
The back panel of the Inline Calibration Controller is shown on the photo below.
Brief explanations on the controls and connectors can be found in
Table 2-2 .
Inline Calibration Controller Tour