Balanced Input Sampling Rate Accuracy Verification; Figure 4-3 Keysight 53132A/53220A To U8903B Balanced Digital Output For Balanced Input Sampling Rate Accuracy Verification; Table 4-5 Balanced Input Sampling Rate Accuracy Specification - Keysight U8903B Service Manual

Balanced input sampling rate accuracy verification

This test measures the sampling rate accuracy on the balanced digital audio input of the
U8903B using the Keysight 53132A/53220A frequency counter and its own digital audio
balanced generator to ensure that it is within the published specification.
Table 4-5
Balanced input sampling rate accuracy specification
±5 ppm
1 Connect the Keysight 53132A/53220A frequency counter input channel 1 and 2 to the
U8903B Balanced digital output channel using the XLR female to two BNC male split
AES cable with separated + and – output lines as shown in Figure 4-3.
Figure 4-3
2 Configure the Keysight 53132A/53220A frequency counter as follows:
– Preset the equipment
– Channel 1 and channel 2 input impedance: 50 Ω
– Frequency measurement start arming source: Immediate
– Frequency measurement stop arming source: Timer
– Frequency arming and measurement gate time: 0.5 s
3 Configure the U8903B digital output channel to be tested as follows:
– Preset the U8903B
– Digital output type: Balanced
– Digital output voltage: 4 V
– Digital output sampling rate: 48 kHz
– Digital output AES audio resolution: 24 bits
– AES output: ON
– Optical output state: OFF
– Digital output function: SINE waveform
Keysight U8903B Service Guide
Performance Verification for Digital Generator and Digital Analyzer
Balanced input sampling rate accuracy specification
Keysight 53132A/
53220A frequency
counter
Keysight 53132A/53220A to U8903B balanced digital output for balanced input sampling rate
accuracy verification
Equipment used
Frequency counter
+
Split AES
cable
U8903B Balanced
digital output
–
4
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