HP 3457A Service Manual page 22

Table 1-1. Specifications
TRUE RMS AC VOLTAGE (Cont*d)
90 DAY: Teal + 5°C (ACDCV Function) After 1 hour warm-up
30 mV to 300 V ranges
FREQUENCY * PERCENT NUMBER OF COUNTS
OF >= 1 PLC 0.1 PLC +005 PLC -0005 PLC
READING |6 1/2 digits|5 1/2 digits|4 1/2 digits|3 1/2 digits
20Hz-45Hz 1.36 3600 364 41
45Wz-100Hz 0.17 3600 364 41
10OHz-20KHz 0.17 3600 364 4)
** 4OOHZ-20KHZ 0.44 3600 2810 285
20Kiz-100KHz] 0.66 4620 466 51
100KHz-300KHz| 3.16 11400 1144 119
300KH2-1MHz 10.16 69600 6960 701
90 DAY: Teal + 1°c CACDCV Function) After 1 hour warm-up
300 V range
FREQUENCY PERCENT NUMBER OF COUNTS
OF >= 1 PLC 0.1 PLC -005 PLC -0005 PLC
READING |6 1/2 digits]5 1/2 digits|4 1/2 digits]3 1/2 digits
** 4OOHZ-20KHZ 0.5 3600 2810 285 33
20KHz-100KHz 1.16 6420 650 69 WW
* Specifications apply within one week of AC auto-cal (ACAL 2) for stable temperature conditions
(Teal £5°C). If AC auto-cal is not used, add 0.6 to the percent of reading figures, add 39000
to the 6 1/2 digit counts, add 3900 to the 5 1/2 digit counts, add 390 to the 4 1/2 digit
counts and 39 to the 3 1/2 digit counts.
Using AC fast filter (ACBAND 400) for frequencies above 400Hz.
For 1 year specifications, add .1% to 24 hour percent of reading figures, add 2100 to 6 1/2
digit counts, add 210 to the 5 1/2 digit counts, add 21 to the 4 1/2 digit counts, add 2.1 to
the 3 1/2 digit counts.
TEMPERATURE COEFFICIENT - DC COUPLED: 300 mV, 30 V and 300 V rang
FREQUENCY PERCENT NUMBER OF COUNTS
READING |6 1/2 digits|5 1/2 digits]4 1/2 digits|3 1/2 digits
20Hz-100KHz| 0.07 1000 100 10
VO1KHz- MHz 0.08 1300 130 13
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