Stanford Research Systems SR620, Руководство пользователя

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Abridged Command List xi
SR620 Universal Time Interval Counter
Abridged Command List
Syntax
Variable i is an integer that selects an input channel for the command:
i Channel
0 External Gate
1 A input
2 B input
Variables i,j,k,l,m, and n are all integers.Variable x is a real number in integer,real, or exponential notation.
Commands which may be queried have a ? in parentheses (?) after the mnemonic. The ( ) are not sent.
Commands that may only be queried have a '?' after the mnemonic. Commands which may not be queried
have no '?'. Optional parameters are enclosed by {}.
Trigger Control Commands
LEVL(?) i,x
Set channel i threshold to x volts. Only allowed in remote operation.
MTRG j Same as pushing MAN trigger button. In external gate or holdoff arming
modes n=0= start gate, n=1= stop gate. Otherwise n is ignored.
RLVL(?) j Sets the reference output level to 0 = ecl,1=ttl.
TCPL(?) i{,j} Sets the input ac/dc coupling of chans A and B to 0 = dc, or 1 = ac.
TERM(?) i{,j} Sets the 50 ohm terminator of input, also prescaler n=0= 50 ohm, n=1= 1
meg, n= 2 = prescale. Prescalers can only be used in freq and per modes.
TMOD(?) i{,j} Sets autolevel on/off. 0 = auto off, 1 = auto on.
TSLP(?) i{,j} Set the trigger slope to 0 = positive, 1 = negative.
Measurement Control Commands
*TRG
Device trigger, same as pushing start button
ARMM(?) j Sets the arming mode
0 +- time
1 + time
2 1 period
3 0.01 s gate
4 0.1 s gate
5 1.0 s gate
6 ext trig +- time
7 ext trig + time
8 ext gate/trig holdoff
9 ext 1period
10 ext 0.01 s gate
11 ext 0.1 s gate
12 ext 1.0s gate
AUTM(?) j Sets/resets autostart of measurements. 0 = off,1= on
COMP Complements parity in +-time arming
DREL(?) j Sets/clears the display REL. 0 = clear, 1 = set, 2 = clear REL and display, 3=
set rel to position of cursor.
GATE(?) x Sets the value of the frequency, period, of count gate to x. x may bebetween
1ms and 500s in a 1,2,5 sequence. If x < 0 a externally triggered gate of
length x is set.
JTTR(?) j Sets variance type to 0 = std dev, 1= Allan variance.