Tektronix TG8000 User Manual page 130

Operating basics
2–52
The alarm signal output can be enabled using the GPI ALARM OUTPUT
and AGL7 ALARM OUTPUT menu items in the UTILITY submenu. (See
page 2-41.) (See page 2-42.)
NOTE.
After the instrument is powered on, it takes about three minutes to detect
a stable error signal (this time is required to stabilize the temperature in the
temperature-controlled oven in the internal reference oscillator). You can see
the remaining time before the alarm becomes effective in the AGL7 main menu
as shown below.
TG8000 Multiformat Test Signal Generator User Manual