Tektronix PFG 5105, Instruction Manual

Page: 81 / 89

Programming
POWER-ON SEQUENCES AND
DEFAULT SETTINGS
Each time power is applied to the PFG 5105/5505,
the internal microprocessor per f orms a sel f -test diag­
nostic routine to check the instrument RAM and ROM
f unctionality. I f no RAM or ROM error is f ound, the
microprocessor per f orms f u rt her routines that check
the f unctionality o f other instrument hardware.
I f a RAM or ROM error is f ound, an error code will
be displayed on the f ront panel readout. In this error
state, the PFG 5105/5505 will not respond to input
f rom the f ront panel or the IEEE-488 bus inter f ace.
Internal errors detected a f ter the RAM and ROM tests
have been completed success f ully will be repo rt ed at
the f ront panel and over the IEEE-488 bus. In this
error state, the PFG 5105/5505 will respond to input
and will attempt to operate despite the error. An error
code may be removed f rom the display be pressing
the f ront panel INST ID button, by sta rt ing a numeric
entry, by incrementing the selected parameter, by
pressing the CLEAR key, or by a transition into the
remote state (REMS).
When the sel
f -test has been completed, the PFG
5105/5505 enters the local state (LOCS) and assumes
the f ollowing de f ault settings:
The SRQ line on the GPIB is also asse rt ed unless
the GPIB address is set to 31 (ignore GPIB com­
mands). I f the instrument is polled by the controller,
the status byte returned will be 0100 0001 (65 decimal;
power-on SRQ).
3-36
Table 3-3
POWER-ON DEFAULT SETTINGS
AM
OFF
AMPLITUDE 5 V
DC
0 V
DCYCLE 0
DELAY 0
DT
OFF
FM OFF
FRQLCK ON
FRQSTART 1 Hz
FRQSTOP
1200 Hz
FREQUENCY 1 kHz
FUNCTION SINE
MODE CONT
NBURST 2
OFFSET
0 V
OUTPUT OFF
PERIOD
1 ms
RAT E
10 µs
RNGLCK OFF
RQS
ON
SWEEP OFF
TRIG MAN
USEREQ OFF
WIDT H
0.5 ms
PFG 5105/5505 Instruction Manual