2-4 800TCU User’s Guide 800gench2.fm Rev. A
Installation and Operation
When the time has been properly entered, press the ENTER key to exit the change
operation.
Key 2:
Selects the OPER STATUS display where various Generator/Translator diagnostic
messages are displayed. The most common message is the
Time Valid Code error
display. This appears when input code frames containing errors exceed the number in the
Error Bypass setting, no code is present or it is the wrong format.
Other messages include
Gen Stopped, Gen Normal, Trans Stopped, and Osc
Error
. In normal operation the display will read Time Valid or Gen Normal.
When the Synchronized Generator mode has been selected, an * is displayed in the
Generator Operational Status display, the unit has calculated the frequency error between
the input code and its time base. If the input code fails, input a correction into the time
base to compensate for the last known frequency error. This compensation will increase
the accuracy of the time base with respect to the input code by approximately one order of
magnitude.
(Note: A unit is programmed to wait for 10 to 15 minutes after power on before the
frequency error is calculated. This allows the internal oscillator to stabilize before
measurements are taken. A
w in the display indicates a warm-up period. A c in the
display indicates the calculation period).
Key 3:
Selects either the internal oscillator or the external oscillator as the Generator or Sync
Generator time base. Select the LEAP YEAR function and select the IEEE-488 address.
Press SETUP and ENTER simultaneously while using this key to modify the particular
display that is in view.
1. When OSC SELECTION displays Internal, the Generator or Synchronized
Generator will use the internal time base. When OSC SELECTION displays
External, the Generator or Synchronized Generator will use an external 1 MHz
oscillator provided by the user. (Note that External is selected but no external
oscillator is provided, the OPER STATUS display will read OSC Input Error and
time will not advance).
2. The LEAP YEAR function, when Disabled, will enable the days to be reset to day one
after a count of 365 has been accumulated. When LEAP YEAR is Enabled the days
will be reset to day one after a count of 366 days. Press SETUP and ENTER
simultaneously while number keys to enable or disable the LEAP YEAR as desired.
Leap year is used in the translator mode only. In all other modes the date is used to
determine leap year.
3. Use IEEE-488 ADDRESS to select the address of the IEEE-488 Interface. Press
button number 3 repeatedly until the IEEE-488 ADDRESS prompt shows. Press
SETUP to enter an address which may be any value from 00 to 30. Use the right- or
left-arrow key to position the cursor beneath the digit that you wish to change, then use
the number keys to enter the digit. When the desired address is displayed, press
ENTER. The selected address is saved in non-volatile RAM. Consequently, the
address upon subsequent power-ups will be that used at the previous power-down.
To Next Page
Loading...
Need help?
General