Stanford Research Systems DS345, Manual

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Front Panel Features
OUTPUTS
FUNCTION
SYNC
REM SRQ
ACT ERR
EXT ERR
ARB
NOISE
BURST
Φ
FM
AM (INT)
LOG SWP
LIN SWP
m
TRIG'D SINGLE
ARB
MOD/SWP SHIFT
Hz dBm
DEG Vrms
% Vpp
FREQ AMPL OFFS PHASE TRIG STEP SPAN RATE MRK STRT f STOP f
ON/STBY
SRS
STANFORD RESEARCH SYSTEMS MODEL DS345 30MHz SYNTHESIZED FUNCTION GENERATOR
TIMEBASE
STATUS
50
Ω
40V max.
TTL
ECL
TTL
REL=0
TRIG SWP CF
BRST CNT
STOP f
MRK START
GPIB
TRIG SOURCE
MRK STOP
SRQ
TRIG RATE
ARB EDIT
MRK CF
RS232
MRK=SPAN
DEFAULTS
MRK SPAN
DATA
SPAN=MRK
CALIBRATE
LOCAL
AMPL
FREQ
OFFST
PHASE
RATE
SWEEP
ON/OFF
SPAN
(DEPTH)
START
FREQ
SHIFT STO RCL CLR
DEG
%
MHz
dBm
kHz
Vrms
Hz
Vpp
STEP
SIZE
0
.
+/-
1
4
7
2
5
8
3
6
9
FUNCTION
MODULATION
FUNCTION SWEEP/MODULATE MODIFY ENTRY
1
2
3 4 6 7
8
9
10
11 12
5
1) Power Switch
The power switch turns the DS345 on and off. In the STBY position power is
maintained to the DS345's internal oscillator, minimizing warmup time.
2) MODIFY Keys
The modify keys permit the operator to increase or decrease the displayed
parameter value. The step size may be determined by pressing the STEP
SIZE key (the STEP LED will light). Every displayed parameter has an asso-
ciated step size, pressing the MODIFY UP arrow key adds the step size to
the current value, while pressing the MODIFY DOWN arrow key subtracts
the step size from the current value. If the step size is set to an exact power
of 10 (1, 10, or 100, for example) the corresponding digit of the display will
flash. To change the step size, display the step size and then either enter a
new value with the ENTRY keys or the MODIFY keys. Pressing the MODIFY
UP arrow while the step LED is lit will increase the step size to the next larger
decade, while pressing the MODIFY DOWN arrow will decrease the step size
to the next smaller decade. The MODIFY UP/DOWN arrows also select be-
tween different menu selections (ie., trigger source). Sometimes the parame-
ter display will have more than one parameter displayed at a time, and the
[SHIFT][LEFT] and [SHIFT][RIGHT] keys will select between these values.
3) ENTRY Keys
The numeric keypad allows for direct entry of the DS345's parameters. To
change a parameter value simply type the new value using the keypad. The
value is entered by terminating the entry with one of the UNITS keys. A typ-
ing error may be corrected by using the CLR key. The +/- key may be select-
ed at any time during number entry.
4) Units Keys
The UNITS keys are used to terminate numeric entries. Simply press the key
with the desired units to enter the typed value. Some parameters don't have
2-5