Download Triggering the Digitizers

Table 2-1. Power-on and Reset States.
Parameter
Power-on/Reset State
Parameter
Power-on/Reset State
OUTPut:TTLT0-7:STATe
OFF (all TTLTrigger lines)
TRIGger:LEVel2
-256 V (Channel 2 level)
ROSCillator:SOURce
INTernal
TRIGger:LEVel3
-256 V (Channel 3 level)
SWEep:POINts
1 (one sample)
TRIGger:LEVel4
-256 V (Channel 4 level)
SWEep:OFFSet:POINts
0 (no pretrigger samples)
TRIGger:SOURce1
IMMediate (source 1
not Ch 1)
VOLT1:RANGe
256 V (Channel 1 range)
TRIGger:SOURce2
HOLD (source 2 not Ch 2)
VOLT2:RANGe
256 V (Channel 2 range)
TRIGger:SLOPe1
POSitive (slope 1 not Ch 1)
VOLT3:RANGe
256 V (Channel 3 range)
TRIGger:SLOPe2
POSitive (slope 2 not Ch 2)
Input Overload
Condition
Overload voltages may occur which will open the channel input relay
disconnecting the input signal from the channel. Overload voltage by range
is shown in the following table.
Range
Voltage Input Condition
Vmax
62 mV to 4 V
High or Low to Guard
>20 V
16 V to 256 V
Low to Guard
>40 V
The overload is reported both when the readings are retrieved and when the
next measurement is initiated. If an overload occurred, an error message is
returned when data is retrieved informing you that the data is questionable
(Overload detected - data questionable). An error message is also returned
when you initiate the next measurement (Overload detected - attempting
re-connect of input relays).
NOTE Relays open at approxiately 260 V. If this happens, you must reprogram the
input range to close by executing INP <channel> ON.
36 Using the Digitizers
Chapter 2