Fluke 522A/6, Руководство оператора

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5522A
Operators Manual
4-52
Note
Do not rely on airport pressure reports. Use a barometric pressure
standard in the same area as the calibrator.
CALIBRATIO N
E N ABLE
SERIAL 1
FROM HOST
IEEE-4 88
I N OUT
/ 63Hz 47Hz
600 V A MAX
FLUKE CORPORATIO N
E V ERETT W A, USA
N ORMAL
W AR N I N G:
TO A V OID ELECTRIC SHOCK GROU N DI N G
CO NN ECTOR I N PO W ER CORD MUST BE CO NN ECTED
FUSE
CAUTIO N
FOR FIRE PROTECTIO N REPLACE O N LY
W ITH A 250 V FUSE OF I N DICATED RATI N G
MAI N S SUPPLY
100 V / 120 V
220 V / 240 V
T5.0A 250 V (SB)
T2.5A 250 V (SB)
CHASSIS
GROU
N D
SERIAL 2
TO UUT
10MHZ
MAX
5 V PK - PK
W AR N I N G: TO A V OID PHYSICAL I N JURY, I N SURE THAT THE FILTER
IS PROPERLY I N STALLED BEFORE E N ERGIZI N G I N STRUME N T
TO CLEA N THE FILTER:
-U N PLUG I N STRUME N T
-REMO V E FILTER
-FLUSH W ITH SOAPY W ATER
-DRY BEFORE REI N STALLATIO N
I N STALLED
OPTIO N S
- SC600
- SC1100
- PQ
LR65268C
(LEM CERTIFIED)
N O I N TER N AL USER SER V ICEABLE
PARTS. REFER SER V ICE TO
QUALIFIED SER V ICE PERSO NN EL
5522A Rear Panel
Interface Unit
Line Po w er
Press u re Mod u le
Press u re
Serial 2 Port
Nu ll Modem and
Gender Changer
Adapters
gjh040.eps
Figure 4-15. Measuring Pressure
How to Synchronize the Calibrator using 10 MHz IN/OUT
You can synchronize one or more Calibrators using the 10 MHz IN and OUT
input/output on the rear panel. Example applications of this capability are connecting
two or more calibrators in parallel in the current output function to sum their outputs, or
using three calibrators to calibrate a three-phase power meter.
Another use for the 10 MHz IN reference input is to improve the frequency performance
of the Calibrator by injecting a reference 10 MHz clock signal. That application is
described next.
How to Use an External 10 MHz Clock
The calibrator uses an internal 10 MHz clock signal as a reference for all ac functions.
Although this internal clock is very accurate and stable, you may have a lab standard that
you want to have govern the frequency performance of the calibrator. To apply an
external clock to the calibrator, you have two choices. You can make external reference
the power-up and reset default condition, or you can select external reference as a volatile
setting for the operating session only.
To make external reference the power-up and reset default setting, proceed as follows:
1.
Connect a 10 MHz square wave signal of 5 V p-p (maximum) to the rear panel
10 MHz IN BNC connector.
2. Press the
S
key.
3. Press the following sequence of softkeys: INSTMT SETUP, OUTPUT SETUP,