Giga-tronics GT 9000, Operation & Maintenance Manual

Page: 58 / 238

2.5.3 Commands
The remote commands used in the 1026 syntax are listed in Table 2-8. In the case of a
command requiring a numeric argument, the acceptable range of values is determined by the
specifications of the instrument. For example, it is not permitted to specify a frequency outside
of the range of the instrument.
Command Description
AF0 fast always off
AF1 fast always on
DISP0 displays off
DISP1 displays on
EXTALCzOFF disable external automatic level control
EXTALCzON enable external automatic level control
FAzn set FA (RF output frequency) to n MHz
HP select GT 9000 syntax (use GT command to return to the present syntax)
LCO level correction off
LC1 level correction on
LEVELzn set output level to n dBm (entry resolution .1 dB)
LVLCRSzn set attenuator to n dB, independently of leveling loop (entry resolution: 10 dB steps);
output level is the sum of LVLCRS & LVLFNE arguments
LVLFNEzn set leveling loop to n dB, independently of attenuator (entry resolution:
.1 dB); output level is the sum of LVLCRS & LVLFNE arguments
MODzAM external amplitude modulation
MODzCONTzOFF AM/scan modulation off
MODzCONTzSCAN scan modulation on
MODzCONTzAM external AM on
MODzDE external pulse modulation, rising-edge triggered
MODzDESCRzEXT- external pulse modulation, falling-edge triggered
MODzDESCRzOFF pulse modulation off
MODzDESCRzPULSE internal pulse modulation
MODzDESCRzSQR internal pulse modulation, 50% duty cycle
external pulse modulation, positive trigger
MODzEXT- external pulse modulation, negative trigger
MODzOFF modulation off
MODzPULSE
internal pulse modulation, 1 kHz rate, 1
µ
s width
MODzSQR internal square wave modulation, 1kHz rate
NSR never say remote (activates front panel controls and displays; instrument accepts
commands via front panel controls AND remote control bus)
PULSEzEXT external pulse modulation, positive trigger
PULSEzOFF pulse modulation off
SENDzFREQ send data to controller, specifying current output frequency or measured frequency
SENDzPOWER send data to controller, specifying current output power or measured power
SENDzSTATUS send data to controller, specifying current lock and level status
UNz1 unlocked mode on
Table 2-8. 1026 Syntax Commands
Model GT 9000 Microwave Signal Generator
2-26
Manual No. 120AM00250, Rev C, September 1998