OPERATION
3-1-52
Selection of frequency standard
Pressing
[Int/Ext Standard]
changes the menu to display the
Frequency Standard
Selection Menu
which controls the internal/external frequency standard facilities. The signal
generator can be set to operate from an external standard or from the internal standard with or
without the standard being provided on the rear panel FREQ STD IN/OUT connector.
The menu has the following options:
Output DISABLED
Internal standard disabled at the FREQ STD
IN/OUT connector.
1 MHz Int. Std.
5 MHz Int. Std.
10 MHz Int. Std.
Internal standard with an output at the selected
frequency on the FREQ STD IN/OUT connector.
1 MHz Ext. Std.
5 MHz Ext. Std.
10 MHz Ext. Std.
Accepts an external frequency standard at the
selected frequency on the FREQ STD IN/OUT
connector.
These settings are saved in non-volatile memory to ensure that the settings are recalled
when power to the instrument is restored.
Selection menu 2
Press
[Utils Menu 2]
from
Utilities Selection Menu 1
. The display now changes to show
Utilities Selection Menu 2
, see Fig. 3-1-46. This menu allows access to the protected data.
Utilities on this menu have either 1st or 2nd level protection.
If the instrument is locked, the appropriate level must be unlocked otherwise the utility
will only be usable in a read only mode. To change parameters, the function must be unlocked.
The procedure is:
[UTIL]
⇒
[Utils. Menu 2]
⇒
[Lock & Unlock]
⇒
Function Unlocking Utility
menu
⇒
[Unlock Level 1]
or, for servicing,
[Unlock Level 2]
.
The correct password must be entered. Many of these activities are intended for use in
servicing and are described in the Service Manual.
Fig. 3-1-46 Utilities selection menu 2
Display
Blanking
Cal.
Value
Power Up
Options
Level
Units
Elapsed
Time
RF Level
Utility
Set Time
& Date
Lock &
Unlock
Utils.
Menu 1
Latch
Data
LOCAL
Utilities Selection Menu 2
C0939