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CODE 63 - RATE A MINIMUM/MAXIMUM UPDATE TIME

The determination of the rate value uses a method in which the elapsed time is

measured between the first and last pulse of the update period. The minimum
update time is the shortest the time period can be. Once the minimum update time
has expired, the unit will end the measurement period when the next negative
going count edge occurs. If the unit does not receive the next negative count edge
within the maximum update time at the start of the measurement period, the unit
will end the time period and the rate display will go to zero. At very slow count
rates, the update time period will be the actual period of one count cycle.

[63 1] 0.5 Sec. minimum/1 Sec. maximum
[63 2] 1 Sec. minimum/2 Secs. maximum
[63 3] 2 Secs. minimum/4 Secs. maximum
[63 4] 4 Secs. minimum/8 Secs. maximum
[63 5] 8 Secs. minimum/16 Secs. maximum (max. rate = 7500 cps)
[63 6] 16 Secs. minimum/32 Secs. maximum (max. rate = 3250 cps)

CODE 64 - RATE A SCALE MULTIPLIER

The Rate A Scale Multiplier is used in conjunction with the Rate Scale Factor

A and Rate A Conversion Factor to scale the actual signal input to obtain the
desired reading.

[64 1] x 1000
[64 2] x 100
[64 3] x 10
[64 4] x 1
[64 5] x 0.1
[64 6] x 0.01

CODE 65 - RATE A DECIMAL POINT & LEADING ZERO
BLANKING

There are six basic modes of decimal point placement for the Rate A indicator

of the Gemini 5200. The decimal point is placed to the right of the display digit
that corresponds to the mode identifier. (The right most decimal point, digit 1, is
never turned on.) A “-” sign in front of the mode identifier will inhibit leading
zero blanking. The absence of a “-” sign will enable leading zero blanking.

[65 1]

[65 2]

0.0

[65 3]

0.0 0

LEADING ZERO

[65 4]

0.0 0 0

BLANKING

[65 5]

0.0 0 0 0

[65 6]

0.0 0 0 0 0

[65 -1]

0 0 0 0 0 0

[65 -2]

0 0 0 0 0.0

[65 -3]

0 0 0 0.0 0

LEADING ZERO

[65 -4]

0 0 0.0 0 0

BLANKING INHIBITED

[65 -5]

0 0.0 0 0 0

[65 -6]

0.0 0 0 0 0

CODE 66 - “OPERATOR ACCESSIBLE FUNCTIONS” MODES

The Gemini 5200 has four basic levels of “Operator Accessible Functions”.

Each of these levels can be modified to enable or disable manual reset. When the
“PGM. DIS.” (program disable) terminal is connected to “COMMON”, access
to all functions is disabled except for those listed below which will remain
enabled. All of the function codes and parameters can be interrogated, regardless
of the “Operator Accessible Functions” mode selected.

A “-” sign in front of the mode identifier will disable the front panel Reset

button and the “RST.” terminal.

Note: The front panel reset button can be independently disabled by using the

disable reset DIP switch.

[66 1] NO FUNCTIONS ENABLED EXCEPT RESET - In this mode, manual

reset is enabled, but none of the programming functions can be changed.

[66 2] PRESET PROGRAMMING AND RESET ENABLED - In this mode,

manual reset and the programming of the Preset Values are enabled.

[66 3] SCALE FACTOR PROGRAMMING AND RESET ENABLED - In this

mode, manual reset and the programming of the Scale Factors are enabled.

[66 4] SCALE FACTOR, PRESET PROGRAMMING & RESET ENABLED -

In this mode, manual reset and the programming of the Scale Factor and Preset
Values are enabled.