Instruction manual Digital 9000 System
Table Of Contents
- Digital_9000_Manual_06_2017_EN
- Important safety instructions
- Digital 9000 – System overview
- Delivery includes
- EM 9046 receiver
- EM 9046 CAB cable set
- Antennas and antenna boosters
- GZL 9000 antenna cables
- SKM 9000/SKM 9000 COM radio microphone
- Microphone heads for the SKM 9000 radio microphone
- SK 9000 bodypack transmitter
- Microphones for the SK 9000 bodypack transmitter
- KA 9000 COM command adapter for the SK 9000 bodypack transmitter
- CI 1-4 line/instrument cable for the SK 9000 bodypack transmitter
- B 60/B 61 battery packs
- BA 60/BA 61 accupack
- L 60 charger
- Product overview
- EM 9046 receiver
- Antennas and antenna boosters
- GZL 9000 antenna cable
- SKM 9000/SKM 9000 COM radio microphone
- SK 9000 bodypack transmitter
- KA 9000 COM command adapter for the SK 9000 bodypack transmitter
- BA 60 accupack
- BA 61 accupack
- B 60 battery pack
- B 61 battery pack
- L 60 charger
- Preparing the EM 9046 receiver for use
- Preparing the A/AB/AD 9000 antennas and/or antenna boosters for use
- Preparing the SKM 9000 radio microphone for use
- Preparing the SK 9000 bodypack transmitter for use
- Preparing the L 60 charger for use
- Cascading several chargers
- Setting up or mounting the charger
- Preparing the Digital 9000 system for use
- Using the EM 9046
- Using the SKM 9000
- Using the SK 9000
- Using the L 60
- Cleaning and maintaining the Digital 9000 system
- If a problem occurs ...
- Specifications
Using the EM 9046
58 | Digital 9000
The selection of a suitable booster frequency range depends on several
factors:
• Required number of transmission links
• Sufficient number of unused frequency presets
• Sufficient number of transmitters of the correct type (in this example,
transmitters of type B1–B4 or B5–B8, see page 39)
• Recommended transmission mode “HD” or “LR”:
“HD (High Definition)”: Transmission of an audio signal without audio
data compression. As a result, the audio signal remains pure and
unadulterated. In “HD” transmission mode, the range can be restricted
compared to “LR” transmission mode.
“LR (Long Range)”: Transmission of an audio signal whose bit rate is
reduced – before transmission – by an audio data compression tech-
nique (SeDAC, Sennheiser Digital Audio Codec). This compression tech-
nique provides excellent audio quality and a large transmission range.
The sensitivity to interference is reduced compared to “HD” transmis-
sion mode.
Let us assume that you want to set up 8 transmission links and transmit
in “HD” transmission mode with the maximum possible transmission
range.
Have a look at interference zone “HD” (see also above diagram): All
booster frequency ranges except for B6 provide a sufficient number of
unused frequency presets.
Example 1:
8 t
ran
smitters of type B1–B4
Let us assume that you have 8 transmitters of type B1–B4:
You can use any of the booster frequency ranges B1–B4 but you should
select the booster frequency range with the highest number of unused fre-
quency presets: B1.
Interference levels of
antenna A/B in
interference zone
“HD” “HD/LR” “LR/HD” “LR”
Recommended
transmission mode
“HD”
“HD”
*
or “LR”
“LR” or “HD”
**
“LR”
*
* Transmission mode can be used with a restricted range
**
It might be that the transmission mode can only be used with a severely restricted range
Booster frequency
ranges
B1 B2 B3 B4 B5 B6 B7 B8
Number of unused fre-
quency presets in inter-
ference zone “HD”
40 35 27 36 29 6 26 31
Can the booster fre-
quency range be used?
–
Is there a sufficient
number of transmitters
of the correct type?
– – – –