R&S ZN-Z15 Series, User Manual

Working with R&S

ZN-Z15x

R&S

®

ZN-Z15x

9

User Manual 1337.5963.02 ─ 04

4

Working with R&S

ZN-Z15x

4.1

Establishing the USB connection

To establish the USB connection between calibration unit and network analyzer,
proceed as follows:

1. Switch on and start up your network analyzer.

2. Connect the USB Type-A connector of the USB cable to any of the USB Type-

A connectors on the front or rear panel of the analyzer. You can also connect
the unit before switching on the analyzer.

Note: 

Wear a grounded wrist strap during this step (see 

"Preventing electro-

static discharge (ESD)"

on page 7).

3. Wait until the operating system has recognized and initialized the new hard-

ware. After completing the initialization, the status LED will switch to green
(see 

Chapter 4.2, "Function of the status LED"

, 

on page 9).

The unit is ready to use, as outlined below.

4.2

Function of the status LED

The LED on top of the Calibration Unit informs about the actual status of the
device. The different states have the following meaning:

OFF

The calibration unit is not connected or defective.

Red

The micro controller is running but there is no USB communication with the

network analyzer.
With a current network analyzer firmware and error-free operation, this status

only appears for a short time after connecting the calibration unit.

Blinking red

During the boot sequence of the network analyzer, the LED possibly shows a

fast blinking red until the operating system is started. The LED switches

between red and green, until the firmware comes up.

Green

The calibration unit is ready use.

Function of the status LED