Tektronix 1705A instruction manual Powering- up, 1400 MHZ

Operating Instructions

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 1400 MHZ

REF

-10

-20

-30

-40

-50

-60

-70

L

O

G

Figure 2-3: 1705A display when powered up in L-BAND and FULL SPAN; CENTER FREQUENCY set to approximately mid range

2- 6 1705A Spectrum Monitor