2.3 Connection
2-27
2.3.8 Reference signal input/output connector
The BNC-type
10 MHz/13 MHz
Ref In connector on the rear panel of MT8820A is
a connector inputting an external reference signal. Input the signal with the fre-
quency accuracy of ±1 ppm and the level of 2 to 5 Vp-p.
Reference frequency to be used needs to be set in the Reference Frequency on Sys-
tem Configuration screen. Following reference signals can be used in MT8820A.
• 10 MHz Built-in reference signal in MT8820A
• 10 MHz External input reference signal
• 13 MHz External input reference signal
The BNC-type 10 MHz Buff Out connector outputs the internal 10 MHz reference
signal of the TTL level.
Fig. 2-3-8-1 10 MHz/13 MHz Ref In and 10 MHz Buff Out connectors
2.3.9 Event trigger connector
The
Event Trig Out
connectors on the rear panel of MT8820A is a BNC connector
for outputting the event timing to an external device.
The
Event Trig In
connectors is a BNC connector for inputting a trigger signal from
an external device, and performing transmission measurement on Phone 1 in syn-
chronization with the external device.
Fig. 2-3-9-1 Event trigger connectors
To Next Page
Loading...
