PT 5780 DVB-T Modulator
ProTelevision Technologies
RS232 Communication
Instruction Manual
Revision 3.11
6-7
INP: SEC A,B
Select inputs A (high priority) and B (low priority).
INP: SEC?
Response:
A, B
•
INPut:REFerence:SOURce
Command for selecting the 10 MHz input reference source from AutoDetect, External or
Internal.
Example:
INP:REF:SOUR INT
Select an internal 10 MHz reference source.
INP:REF:SOUR?
Response:
INTERNAL
•
INPut:REFerence:PPS
Command for selecting the 1 PPS Impedance input reference signal, choosing between a 50
Ω
or high impedance signal.
Example:
INP:REF:PPS O_50
Select 50
Ω
1PPS input reference signal
INP:REF:PPS?
Response: O
_50
•
INPut:REFerence:MHZ
Command for selecting the 10 MHz impedance input reference signal, choosing between a 50
Ω
or high impedance signal.
Example:
INP:REF:MHZ HIMP
Select a high impedance10MHz reference signal.
INP:REF:MHZ?
Response:
HIMPEDANCE
•
INPut:REFerence:PPSTlevel
Command for selecting the 1 PPS trigger level. A range of 0 to 3.5 V is available.
Example:
INP:REF:PPST 0.4
Select a 1PPS trigger level of 0.4 V.
INP:REF:PPST?
Response:
0.4
•
INPut:REFerence?
Query command only. Provides a list of the three above parameters, i.e. source, 1 PPS
impedance, 10 MHz impedance and 1 PPS trigger level.
Example:
INP:REF?
Response:
INTERNAL,
O
_50, HIMPEDANCE,
0.4
•
INPut:BUFFerfill?
Query command only. Provides the transport stream buffer fill indicator in terms of number of
packages. This command is applicable to either the single signal in a non-hierarchical system
high priority signal in a hierarchical system.
Example:
INP:BUFF?
Response:
1
•
INPut:BUFFerfill:HP?
Содержание PT 5780
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