P
ULSAR
BG
Reference Carrier Input
Page 1
1 DESCRIPTION
If this option is installed, the output frequency is referred to an external reference which will provide
higher frequency stability. It will also be possible to lock a group of modulators to one reference. The
possible external reference frequencies are 6, 7, 8 and 10 MHz.
The input impedance is always high, and a loop through connection is provided by the included BNC
T-connector.
If the level of the selected external reference carrier becomes too low the internal reference will
automatically be selected.
2 SPECIFICATIONS
- Connector ............................................................................... BG, I, DK : BNC
- Input impedance ..................................................................... high impedance
- Input level............................................................................... + 40 dBmV ± 6 dB
3 INSTALLATION
Please read this chapter carefully before installing the option.
The installation procedure is only necessary when ordering this option sepa-
rately. When ordering a P
ULSAR
with Reference Carrier Input, the installation
has already been carried out during production.
For location of the boards, connectors and jumpers use the internal layout figure.
Before changing anything in the P
ULSAR
, remove the power cord to switch off
the power supply.
3.1 Opening The P
ULSAR
Unplug the power cord to turn off the P
ULSAR
.
•
Unscrew the nine screws (Torx 10) holding the top cover.
•
Pull the top cover backwards and remove it.
•
Loosen the nine screws (Torx 10) holding the bottom cover.
•
Remove the bottom cover.
OPTION:
REFERENCE CARRIER INPUT
ORDER NUMBER: C9825570
WARNING
REMARK
Содержание PULSAR BG
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