Sennheiser DRM 85, Руководство по обслуживанию

Страница: 29 / 41

DRM 85-C, DRM 85
08/2007
29/41
5.2 Test table
se-
quence type of measure-
ment/adjustment signal input device settings measuring
point/ test
point required
value remarks
1 visual inspection
at first dismount the transmitter. See also exploded view.
1.1 switches and
buttons
– – –
contacts are not twisted, no
hairline cracks at the solder
points, no mechanical damage
1.2 battery
compartment
– – –
see 1.1
1.3 flat ribbon cables
and terminal strips
– – –
see 1.1;
terminal strips are locked
2 current and voltage measurement
2.1 operating voltage 3 V
DC
via
battery contacts
DRM 85 = ON
–
+2 V
DC
to
+3 V
DC
LOW BAT:
+1.8 V
DC
current
limitation min.
500 mA
REC LED is
blinking;
the recording
sequence stops
see also the LOW
BAT logfile entry
in the DRM 85
root directory
2.2 current
consumption when
in operation see 2.1 see 2.1 ampere-
meter in
series to the
power supply typ. 175 mA –
2.3 DC/DC-converter
voltage see 2.1 see 2.1 TP406 "EVER
3.3V" / M2
TP507 / M2
+3.3 V
DC
+1.8 V
DC
see page 39, 41
2.4 supply voltage
AF board see 2.1 see 2.1 C121 / GND +3.3 V
DC
–
3 checking the display elements
3.1 checking the
automatic backlight
display deactivation see 2.1 see 2.1;
No user interaction – backlighting switches off after
approx. 15 seconds
3.2 audio level display see 2.1 see 2.1;
“RECLEV“ = 10 dB
Speak into the microphone – AF display deflection
3.3 “REC“ and
alphanumeric
display see 2.1; see 2.1;
Press “REC“ button – “REC“ lights up
the visible display recording time
counts down
3.4 “PLAY“ display see 2.1; See 2.1;
press the “PLAY“ button – “PLAY“ lights up;
the visible play time counts up