Meinberg PZF511 - Manual (Page 15)

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Menu OSZ.ADJ.
The standard version of the PZF511 includes a voltage controlled temperature compen-
sated oszillator (TCXO). Its nominal frequency of 10MHz is adjusted by using two
digital-to-analog converters (DACs). One of them is responsible for the coarse tuning
and the other one for the fine adjustment of the oszillator.
The value for the coarse-DAC is settable in this menu (range: 0...65535).
Changes in this menu should be done by Meinberg, only, and not by the user!
Menu DAC CLR
The value of the fine DAC is displayed in this submenu.
If the 'Set'-button is pressed for approximately two seconds, the DAC is set to its mid-
scale value and the difference to its last value is added to the coarse DAC proportional.
This process is released automatically if the value of the fine DAC exceeds its limits
(0...4095).
Therefore the setting of this value to mid-scale by hand is reserved for service
purposes by Meinberg only.
Menu SER. No.
The 12-digit serial number of the PZF511 is displayed in this menu. This number may be
helpful to know if the user asks Meinberg for support.
The most significant eight digits of the serial number are displayed first, after pressing the
Set button the last four digits are shown.