ACCEPTANCE TESTING
5-1-11
LF OUTPUT
SPECIFICATION
Level accuracy: ±5% for levels above 50 mV
±10% for levels from 500 μV to 50 mV
(With a load impedance >10 kΩ)
Frequency response: Typically better than 1 dB from 0.1 Hz to 300 kHz
TEST EQUIPMENT
Description Minimum specification Example
Digital multimeter DC to 300 kHz, 1 mV to 5 V Datron 1061A
Audio analyzer Capable of measuring 0.5 mV ±3% and
levels at 10 Hz
HP 8903B
Rhode & Schwarz
UPA3
TEST PROCEDURES
Level accuracy
Fig. 5-1-6 Level accuracy test set-up
(1) Connect the test equipment as shown in Fig. 5-1-6.
(2) Set the UUT to give an LF output of 5 V at 1 kHz as follows:
[LF] [LF Gen] [LF Freq] 1 kHz [LF Level] 5 V
(3) The level measured on the digital multimeter should read 5 V ±0.25 V.
(4) Check the LF output of the UUT at the levels indicated in Table 5-1-7. Check that
the measured levels are within specification.
Table 5-1-7 Level accuracy output levels
LF output levels (V)
5.0000 0.1000 0.0050
2.0000 0.0500 0.0020
1.0000 0.0200 0.0010
0.5000 0.0100 *0.0005
0.2000
*For the last measurement it will be necessary to use the audio analyzer. Connect the test
equipment as shown in Fig. 5-1-5.
C0220
LF
OUTPUT
UUT Digital Multimeter
INPUT
➤
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