LM 128P
Loudness and Peak Program Meter according to EBU R 128
5
SSB AUDIO GmbH * Sonnenweg 25 * 30827 Garbsen, Germany
Tel.: +49 5131 464272 * www.ssb-audio.com * [email protected]
2.3
Keys
Key
+20dB
: Adds 20 dB gain to the PPM display. Also: Selection between Loudness Meter (LM) Display
Mode and Peak Program Meter (PPM) Display Mode.
Key
LUFS
: Selection between LU (relative to a reference level) and LUFS (absolute to full scale level).
Also: Selection between AES/EBU, SDI and analog inputs (if available).
Keys
STL
,
INT
and
LRA
: Selection of the 7-segment display: Short Term Loudness,
Integrated Loudness or Loudness Range. Also: Setup functions.
Keys
RUN
/
PAUSE
resp.
RESET
: Start, Stop resp. Pause as well as resetting the Integrated Loudness
and the Loudness Range measurement.
3
Technical Data
1 AES/EBU input, XLR, transformer coupled, for stereo signal measurements
Optional 3G-SDI input/output, 2 x BNC
Optional balanced analog inputs, input impedance approx. 34 kOhm, reference level for 0 LUFS adjustable
from 0 dBu up to +24 dBu in steps of 1 dB
15 sample rates (8 kS/s up to 96 kS/s) are recognized automatically
Automatic filter coefficients adjustment for 1 kHz reference frequency
Sliding 400 ms and 3000 ms measuring windows with 25 ms resolution (i. e., the update rate is 40 Hz and
the overlapping is 375 ms and 2975 ms resp.)
PPM measurements with 10 ms/90% resp. 5 ms/80% attack and 1.5 s/-20 dB decay time
Correlation Meter dynamic range > 130 dB
5 V low voltage supply, max. 2 A
Size (W x H x D): 190 mm x 40 mm x 140 mm
Weight: 850 g without / 900 g with optional SDI and analog inputs
4
Connections
4.1
Power Supply
5 V DC: Please use the supplied power supply unit. Other power supplies may cause malfunctions or even damage
the device.
4.2
Digital Audio Inputs
4.2.1
AES Input
This is an AES/EBU resp. AES3 input. With a matching adapter also AES3id (BNC) or S/P-DIF (RCA) signals can be
applied.
