Tektronix 1705A - Manual (Page 45)

Operating Instructions
2- 6 1705A Spectrum Monitor
Powering- up
When the 1705A is first powered up, it should come up in a measurement mode.
Most commonly it will be configured as it was when it was last turned off. If
not, there are some very simple checks that should be made.
If the power switch is showing ON, but the graticule and front-panel indicators
do not come on, check for a mains power problem, such as a blown fuse or
interrupted power mains (unplugged or main breaker thrown). If these are right,
refer to a qualified service technician for troubleshooting.
If the Non-Volatile RAM (NVRAM) is defective, which disables the operation of
the Microprocessor, there is a crt readout. If the 1705A comes on with the
following message:
ERROR : CANNOT READ OR WRITE
TO 2444
PRESS [VIDEO] KEY TO EXIT
operation will be questionable and the 1705A should be thoroughly checked out
by a qualified service technician.
Normal start-up of the instrument should consist of a display of alphanumeric
frequency readout and a spectrum display similar to that in Figure 2-3.
Tek
REF
--10
--20
--30
--40
--50
--60
--70
L
O
G
1400 MHZ
Figure 2-3: 1705A display when powered up in L-BAND and FULL SPAN; CENTER
FREQUENCY set to approximately mid range