Maintenance and Troubleshooting EM510
6.1 4065.7763.32-01.00
6 Maintenance and Troubleshooting
6.1 Maintenance
6.1.1 Alignment of the 10-MHz reference oscillator crystal in the IF section
In order to ensure accurate receiver frequencies the internal 10-MHz reference oscillator crystal must
be trimmed every year.
A 1.5-mm screwdriver for cheese head screws is required.
Connect a frequency counter with a tolerance 110
-8
to X4 REF EXT/INT at the rear panel.
Start the internal reference.
Trim the frequency to 10 MHz 0.5 Hz at room temperature.
The alignment is carried out via remote control and is described in chapter 5.3.5 CALibration
Subsystem
6.1.2 Reset
A reset is carried out at the front panel of the device when line EXT_RST pin 23 of connector X12b is
briefly grounded (for example, via pin 26 of connector X12b) while the unit is on.
The data for the configuration of the LAN interface are stored in an EEPROM safe of power failure and
cannot be changed by a reset.
The data for the configuration of the LAN interface are stored fail-safe in an EEPROM and not changed
by a reset.
6.1.3 Firmware Update
See also 4.4 Firmware Update.
If modules are exchanged, a firmware update might be required.
In this case a CD-ROM with the current firmware will be shipped together with the new module.
The CD-ROM also contains the release notes with instructions for the installation of the firmware.
The release notes also describe the changes that were made with the new firmware.
The firmware can also be obtained from the EM510 download area at the following internet address:
http://www.rohde-schwarz.com
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