HP 3457A Service Manual page 24

3457A
General Information
Table 1-1. Specifications
TRUE RMS AC CURRENT (Cont'd)
MEASUREMENT ACCURACY - AC COUPLED:
After two hour warm-up.
Sine-wave inputs > 10% of range.
AC slow filter ON (ACBAND 20).
Auto-zero ON.
+(% of reading + number of counts)
For pre-programmed settling times, error is < 0.1% of input current step.
HOUR: Teal £ 1°C (ACI Function) After 2 hour warm-up
30 mA and 300 mA ranges.
FREQUENCY PERCENT
OF
READING
>= 1 PLC
6 1/2 digits
Accuracy relative to calibration standard
NUMBER OF COUNTS
0.1 PLC 005 PLC
5 1/2 digits]4 1/2 digits
0005 PLC
3 1/2 digits
20Hz2-45Hz
46Hz-100Hz
101H2-20KHz
** 400HzZ-20KHz
21KHz- 100KHz
2800
2800
2800
2800
4000
24 HOUR:
1 A range. (1 amp maximum input)
FREQUENCY PERCENT
OF
READING
>= 1 PLE
6 1/2 digits
Teal + 1°C (ACI Function) After 2 hour warm-up
32
32
32
80
42
290
290
290
750
400
Accuracy relative to calibration standard
NUMBER OF COUNTS
0.1 PLC 005 PLC
5 1/2 digits|4 1/2 digits
0005 PLC
3 1/2 digits
0.9
0.35
0.30
0.30
20Hz-45Hz
46Hz-100Hz
1O1Hz-20KHz
** 400Hz-20KHz
2800
2800
2800
2800
90 DAY: Tcal +
30 mA and 300 mA ranges.
* PERCENT
OF
READING
FREQUENCY
>= 1 PLC
6 1/2 digits
290
290
5°c (ACI Function) After 1 hour warm-up
NUMBER OF COUNTS
0.1 PLC 005 PLC
5 1/2 digits|4 1/2 digits
+0005 PLC
3 1/2 digits
0.85
0.3
0.25
0.25
1.0
2800
2800
2800
2800
4000
20H2-45Hz
46Hz-100Hz
101Hz-20KHz
** GOOHZ-20KHzZ
21KHz- 100KHz
32
32
32
80
42
290
290
290
750
400