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36 Chapter 2
Front and Rear Panel Features
Rear-Panel Features
PRESEL TUNE OUTPUT provides a signal to control external preselected mixers if
External Mixing (Option AYZ) is installed.
11 Card Slot Identification Numbers. Refer to Table 2-6. and Table 2-7. for
card slot versus option card compatibility information.
12 10 MHz REF IN accepts an external frequency source to provide the 10 MHz, −15
to +10 dBm as a timebase.
NOTE It is not necessary to connect the 10 MHz REF OUT to the 10 MHz REF IN on the
rear panel of the analyzer. Doing so will result in a Frequency
Reference Error message.
13 10 MHz REF OUT provides a 10 MHz, 0 dBm minimum, timebase reference
signal.
14 Power On Selection selects an analyzer power preference.
The
PWR ALWAYS ON setting turns the analyzer on whenever external power
is applied. This mode is useful if an external power switch is used to control
a rack of several instruments. Nevertheless, if you set the analyzer to
standby using the front panel
Standby key (see Figure 2-1. on page 22, item
23) and the external power is removed and restored within 20 seconds, the
analyzer will remain in standby.
The
PWR NORM setting assigns analyzer on/off control to the front-panel On
and
Standby keys (see Figure 2-1. on page 22, item 23). If the analyzer is on
and the external power is removed and restored within 20 seconds, the
analyzer will turn on. On the other hand, if the external power is removed
and restored after 20 seconds, the analyzer will remain in standby
regardless of the front panel switch settings.
Power Always On
Analyzer state before removing
power
A lapse in power
< 20 sec.
A lapse in power
> 20 sec.
On On On
Standby Standby On
Power Norm
Analyzer state before removing
power
A lapse in power
< 20 sec.
A lapse in power
> 20 sec.
On On Standby
Standby Standby Standby