Width, Ext trig threshold, Ext trig polarity – BNC 745 User Manual
Page 24: Ext trig prescaler, Frequency
Model 745 Digital Delay Generator.
November 2013
WIDTH
Syntax:
WIDTH Tx,W
WIDTH? Tx
Form:
Set & Query
Description:
Channel Tx width setting
Parameter:
Tx: channel number 1 to 4
W: width ns
RST value
-
Specified limit
Channel T0 to T4 : 100 to 10 000 ns
Channel T5 to T8 : 100 to 10 000 000ns
Example:
250 ns to channel 4: WIDTH T4,250
Query mode to channel 4: WIDTH? T4 => :WIDTH T4,250
EXT TRIG THRESHOLD
Syntax:
STRIG mV
STRIG?
Form:
Set & Query
Description:
Set and Query trigger threshold voltage
Parameter:
mV: Threshold level in milliVolt
RST value
-
Specified limit
100 to 5 000 mV
Example:
2.5 V: STRIG 2500
Query mode: STRIG? => : 2500
EXT TRIG POLARITY
Syntax:
POLAR Edge
POLAR?
Form:
Set & Query
Description:
Edge: Rising Edge or Falling Edge
Parameter:
Edge: R_E or F_E
RST value
-
Specified limit
R_E or F_E parameters
Example:
Falling Edge: POLAR F_E
Query mode: POLAR? :F_E
EXT TRIG PRESCALER
Syntax:
TPRESC Value
TPRESC??
Form:
Set & Query
Description:
Set prescaler value to divide Trig In source frequency
Parameter:
Value: Trig In prescaler value
RST value
-
Specified limit
from 1 to 2
16
-1
Example:
4: TPRESC 4
Query mode: TPRESC? :4
FREQUENCY
Syntax:
FREQ Fx, F
FREQ? Fx
Form:
Set & Query
© Berkeley Nucleonics Corp.
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Model 745 User Manual