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73M1966B-EVM

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73M1966B Evaluation Kit User Manual UM_1966B_024
10 Rev. 1.0
2.5 Connecting the Power Supply
Before applying power, place the PWR switch in the down position.
There are two ways to supply power to the board:
• Use the supplied wall transformer that plugs directly into the board at J5. Do not use in conjunction
with J1 and J2.
• Feed the board with 3.3 V and GND through the J1 and J2 connectors. Cables are not supplied. Do
not use in conjunction with J5.
2.6 Applying Power
To apply power, place the PWR switch in the up position.
After applying power, press the RESET switch to ensure proper operation of the board.
UM_1966B_024 73M1966B Evaluation Kit User Manual
Rev. 1.0 11
3 Connectors and Jumpers
This section describes the connectors and jumpers on the 73M1966 Demo Motherboard.
Table 1: Motherboard Connectors and Jumpers
Connector
Number
Name Function
S1
4-pin daughterboard
connector
Socket for the analog interface to the 73M1966B Demo Board.
S2
20-pin daughterboard
connector
Socket for the digital interface and power to the 73M1966B Demo
Board.
J1 VCC3.3
Banana jack for 3.3V lab supply connection. (Use either J1 and J2
or J5 but not both.) Using J1 and J2 is necessary only if testing
over a range of voltage.
J2 GND
Banana jack for ground lab supply connection. (Use either J1 and
J2 or J5 but not both.) Using J1 and J2 is necessary only if testing
over a range of voltage.
J3 To Slave Connector to connect SPI to slave demo board.
J4 From Master Connector to connect SPI to master demo board.
J5 +5 V Power
Input for +5 V power supply which is down regulated on the
Motherboard to 3.3 V. (Use either J5 or J1 and J2 but not both.)
J6 PCM Highway Header connector to the PCM Highway.
J24 CLKO BNC connector for the clock output.
J30 RJ-11 Connector Connection to telephone network simulator.
J31, J32 PCM Highway
PCM Highway connectors for daisy chain operation. Only used to
daisy chain two or more Motherboards.
J33 Reserved
J41 Reserved
J42 SPI Connector
Connect the cable from the PC to J42 to communicate to the SPI
via the GUI. Take care to observe the orientation of the connector.
J43 CLKI
BNC connector for connecting an external PCM clock source or
sync.
J44 FS BNC connector for providing or receiving PCM frame sync..
J45 DR
BNC connector providing receive data from a PMC source to the
demo board.
J46 DX
BNC connector providing transmit data to a PCM receiver from the
demo board.
J47 Audio
Install jumper on the AUDIO pin and the middle pin to activate the
speaker amplifier. By default, no jumper is installed and the
speaker amplifier is not activated.
J57 On-Board Oscillator
Install jumper to enable the on-board oscillator. This is not
normally used.
73M1966B Evaluation Kit User Manual UM_1966B_024
12 Rev. 1.0
4 Using the Demo Boards
This section provides advice for using the 73M1966B Evaluation Kit with the Wandel & Goltermann
PCM-4.
It is assumed that the connections described in Getting Started have been made, that the GUI has been
installed following the instructions in the 73M1866B/73M1966B GUI User Guide, and that power has been
applied to the 73M1966 Demo Motherboard.
Initialize and configure the Demo Board for your application using the GUI. See the 73M1866B/73M1966B
GUI User Guide. The GUI software includes example scripts that configure the Demo Board for specific
purposes.
The following is a suggested list of tests that can be performed using a PCM measuring set such as the
W&E PCM-4:
• TX Gain – Tests the digital input to analog output level and its conformance to the required
specifications. The effect of the gain setting bits can also be tested (DAA1:0, TXboost).
• RX gain- tests the analog input to digital output level and conformance to the required specifications.
The effect of the gain setting bits can also be tested (RXG1:0, RX boost).
• TX/RX Gain versus Frequency – Tests the gain variation versus frequency across the audio band.
Shows the passband ripple and adherence to the frequency response template.
• TX/RX Gain Linearity – Tests the gain linearity over the receive level dynamic range. Also sensitive
to the RX DC offset and noise.
• Return Loss – Indicates the matching of the DUT impedance to the standard's reference impedance.
Only impedances supported by the specific W&G PCM-4 can be tested. Other impedances must be
tested using an impedance bridge and adjustable reference impedance. Most W&G PCM-4s support
600, 850 and 900 Ohms plus one "complex impedance," which can be ETSI, German or "custom"
impedance. Some W&G PCM-4s may not support a complex impedance at all.
• Return Loss – TX digital to RX digital test to determine the amount of transmitted signal is reflected in
the receive channel. A proper reference impedance and DC supply must be connected at the analog
port of the DUT.
• TX/RX Total Distortion – Tests the dynamic range of the TX and RX channels and the effects of the
compander. This test is also sensitive to the RX DC offset and noise. Must comply with the test
template.
For information about typical test results and other relevant tests, refer to 73M1966B Performance
Characterization.
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73M1966B-EVM

Mfr. #:
Buy 73M1966B-EVM
Manufacturer:
Maxim Integrated
Description:
Networking Development Tools 73M1966 Demo Brd & MotherBrd
Lifecycle:
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