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2. Operating Instructions
2.1 Power Requirements
The Series 800 Calibrators can be operated from an AC power source of 100, 120, 220 or
240 Volts (±5%), 50-60Hz. The selection of line voltage operation must be made prior to connecting
the instrument to the power source by inserting the printed circuit adapter board in the AC receptacle
assembly (located on the rear panel) with the appropriate voltage mark readable. The line fuse is
rated at 4 Amps Slow Blow, 100 or 120 volts; 2.5 Amps Slow Blow at 220 or 240 volts.
A three conductor power cable is provided and when this cable is connected to a standard
three wire outlet the instrument chassis is connected to power systems ground. This feature
prevents the instrument case from assuming voltages which are potentially hazardous to personnel.
In the event that an adapter is used to connect the three wire cable to a two wire outlet the green
(ground) adapter terminal should be connected to the power system ground.
An over temperature switch is connected in series with the AC line and mounted on the rear
panel heat sink. This feature protects the instrument from damage by removing power if the
temperature of the instrument rear panel exceeds limits.
2.2 Installation
The Series 800 Calibrator's standard configuration is bench mounted. Combination handles
and rack mounting ears are available on special order and are interchangeable with the bench
mounting handles. Suitable support must be provided for rack mounts.
2.3 Controls and Displays
Figure 2-1 illustrates the location of all front and rear panel controls, connections and
indicators. Each element of control, display or connection is numbered and a description of the
function of each appears below.
1. Power (Includes ON Indicator)
Switch to energize Calibrator.
2. Record % Deviation
Push switch which holds "% Deviation" reading internally. Sets bit 1 of the status byte on IEEE
488 Interface indicating that the instrument is prepared to transmit "% Deviation" or "volt/ampere
seconds" reading over IEEE 488 bus.
3. Vernier Frequency Control
4. Vernier ON Selector
The vernier selector (a push-push switch) enables the Vernier Control. The Vernier Control
permits variation of the frequency around the selected frequency by approximately ±10%. This
function must be OFF for line synchronization operation,
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