Fluke 5522A - How to Synchronize the Calibrator Using 10 Mhz IN;OUT; How to Use an External 10 Mhz Clock

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.
CALIBRATION
ENABLE
SERIAL 1
FROM HOST
IEEE-488
IN OUT
/63Hz 47Hz
600VA MAX
FLUKE CORPORATION
EVERETT WA, USA
NORMAL
WARNING:
TO AVOID ELECTRIC SHOCK GROUNDING
CONNECTOR IN POWER CORD MUST BE CONNECTED
FUSE
CAUTION FOR FIRE PROTECTION REPLACE ONLY
WITH A 250V FUSE OF INDICATED RATING
MAINS SUPPLY
100V/120V
220V/240V
T5.0A 250V
(SB)
T2.5A 250V (SB)
CHASSIS
GROUND
SERIAL 2
TO UUT
10MHZ
MAX
5V PK - PK
WARNING: TO AVOID PHYSICAL INJURY, INSURE THAT THE FILTER
IS PROPERLY INSTALLED BEFORE ENERGIZING INSTRUMENT
TO CLEAN THE FILTER:
-UNPLUG INSTRUMENT
-REMOVE FILTER
-FLUSH WITH SOAPY WATER
-DRY BEFORE REINSTALLATION
INSTALLED
OPTIONS
- SC600
- SC1100
- PQ
LR65268C
(LEM CERTIFIED)
NO INTERNAL USER SERVICEABLE
PARTS. REFER SERVICE TO
QUALIFIED SERVICE PERSONNEL
5522A Rear Panel
Interface Unit
Line Power
Pressure Module
Pressure
Serial 2 Port
Null 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,