Sony Tektronix WFM 1125, Руководство по обслуживанию

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Preparation for Use
2-10
WFM 1125 Option 0A/0B/0C/0D Service Manual
This waveform monitor operates with any line voltage from 90 to 240 VAC
RMS
with any line frequency from 48 to 63 Hz. No fuse is provided with this
waveform monitor.
The CPU module with on-board battery allows the WFM 1125 Digital Television
Waveform Monitor Option 0A/0B/0C/0D to retain some types of data upon loss
of the AC power source. The stored adjustment constants, saved front-panel
settings, current front-panel settings (instrument status), and waveforms saved in
memory are retained.
The on-board battery of the CPU module has a shelf life of about five years.
Partial or total loss of stored settings upon power on may indicate that the battery
needs to be replaced.
Operating Environment
The following environmental requirements ensure proper operation and long
instrument life.
Operate the waveform monitor where the ambient air temperature is from 0
_
C
to +40
_
C. Store the waveform monitor in ambient temperatures from –20
_
C to
+60
_
C. After storage at temperatures outside the operating limits, allow the
chassis to stabilize at a safe operating temperature before applying power.
The waveform monitor is cooled by air drawn in and exhausted through its
cabinet side panels by an internal fan. To ensure proper cooling, allow at least
two inches (5 cm) clearance on both sides, one inch (2.5 cm) on the bottom and
top, and six inches (15 cm) on the rear. (The feet on the bottom provide the
required clearance when set on a flat surface.)
Operating Voltage
Memory Backup Power
Operating Temperature
Ventilation Requirements