User manual

Section 3: Installation 3-11
Moseley SL9003Q 602-12016 Revision G
13. Reset the bit counter (press ENTER) and verify error-free operation
14. Proceed to the Audio Bench Test for further performance verification.
3.2.2. Discrete Audio and Data Channel Bench Test
Test Equipment
RF Wattmeter
950 MHz operation with a measurement range of 1–5 Watts
RF Power Attenuator
50 ohm, 5 watt “dummy load” for 950 MHz operation with 20
to 30 dB of attenuation
Variable Step Attenuator
0–100 dB at 950 MHz
Serial I/O Data
RS232, 300-9600 bps; (equivalent to the subcarrier data port
that will be used in the site installation - use the actual
remote control equipment if possible)
Audio Distortion Analyzer
AES/EBU digital audio I/O is desirable. (Test equipment will
allow adjustment of levels for calibration check.)
Procedure
1. Connect the equipment as shown in Fig. 3-3. Be sure to physically separate the
TX and RX units by greater than 15 feet.
2. Ensure the link is RF operational as outlined in the RF Bench Test (Section
3.2.1). Adjust the attenuator for an RSL reading of –60 dBm +/- 2 dBm and
verify error-free operation.
3. Ensure that the appropriate module ID# is selected in both the Transmitter and
Receiver Units’ (in the METER LCD screen).
4. AES/EBU Digital Audio Test: Apply a 1kHz stereo tone, at a level of 0 dB (full
scale), to the Source Encoder module.
5. The front panel bar graph of the transmitter and the receiver should register a 0
dB reading for both channels.
6. Analog In/Out Audio Test: Be sure there is no AES signal at the module in
order to force the auto-switching circuitry to the analog inputs. Next, apply a 1
kHz tone, at a level of +10dBm, to the left (CH.1) channel.
7. The front panel bar graph of the transmitter and the receiver should register a 0
dB reading for Channel 1.