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BK Precision 1823A - 2.4GHz Universal Frequency Counter with Ratio Function
1823A - 2.4GHz Universal Frequency Counter with Ratio Function
BK Precision 1823A - 2.4GHz Universal Frequency Counter with Ratio Function
The model 1823A is a reciprocal 2.4GHz universal frequency counter that is microprocessor controlled. The LED display can provide eight digits of resolution using the internal 10S gate time. The high accuracy, sensitivity and versatility of this counter make it an extremely valuable instrument to scientists, engineers, experimenters and communications technicians

Features:
Selectable gate times 0.1 sec and 1.0 sec
+1PPM Time base stability
Trigger function
Frequency ratio measurement function
Time interval measurement function
External frequency standard input
Bright LED display
Attenuator
Period
Total
Low pass filter
Line Filter
RS-232C Interface

List Price: $449.00
Add to Cart

Specifications

Input A Characteristics

Frequency Range

0.1Hz to 100MHz (DC Coupled)
30Hz to 100MHz (AC Coupled)

Sensitivity

0.1Hz to 100MHz: 30mV

Coupling

AC or DC Selectable

Impedance

1 MΩ Resistance, Shunted by <40pF

Attenuator

x 1 or x 10 Switch Selectable

Low Pass Filter

-3dB Point of 100kHz, Switch Selectable

Trigger Level

+350mV to -350mV (Preset 0V)

Slope

Positive or Negative Slope Switch Selectable

* Note: Trigger error is typically ±0.3% of reading by the number of cycles averaged for input signals having better than 40dB S/N ratio and greater than 100mV amplitude.

Resolution and Number of Displayed Digit

Time Base Selector

INT

EXT

INT

EXT

INT

EXT

INT

EXT

Gate Time

0.01S

0.1S

1S

10S

Number of Displayed Digit

5

6

6

7

7

8

8

9

Frequency (Input A, B)

Resolution

0.1 Hz-0.99 Hz

10 µHz

1 µHz

1 µHz

0.1 µHz

0.1 µHz

10nHz

10nHz

1nHz

1 Hz-9.9 Hz

0.1 mHz

10 µHz

10 µHz

1 µHz

1 µHz

0.1 µHz

0.1 µHz

10nHz

10 Hz-99 Hz

1 mHz

0.1 mHz

0.1 mHz

10 µHz

10 µHz

1 µHz

1 µHz

0.1 µHz

100 Hz-999 Hz

10 mHz

1 mHz

1 mHz

0.1 mHz

0.1 mHz

10 µHz

10 µHz

1 µHz

1 kHz-9.9 kHz

0.1 Hz

10 mHz

10 mHz

1 mHz

1 mHz

0.1 mHz

0.1 mHz

10 µHz

10 kHz-99 kHz

1 Hz

0.1 Hz

0.1 Hz

10 mHz

10 mHz

1 mHz

1 mHz

0.1 mHz

100 kHz-999 kHz

10 Hz

1 Hz

1 Hz

0.1 Hz

0.1 Hz

10 mHz

10 mHz

1 mHz

1 MHz-9.9 MHz

100 Hz

10 Hz

10 Hz

1 Hz

1Hz

0.1 Hz

0.1 Hz

10 mHz

10 MHz-99 MHz

1 kHz

100 Hz

100 Hz

10 Hz

10 Hz

1 Hz

1 Hz

0.1 Hz

100 MHz

10 kHz

1 kHz

1 kHz

100 Hz

100 Hz

10 Hz

10 Hz

1 Hz

(Table 1)

Accuracy

± Time base Error ± Resolution (Table 1)

Period Range

10 nS to 10 S

Display

n. u. m., Sec with decimal point

Total Range
   Capacity
   Over Flow

DC to 30 MHz
0 to 999 999 999
"OF"

Max. Input Voltage Level


Fig. 1 Max. Input Level (Input A, B)

Input B Characteristics

Frequency Range

0.1Hz to 100MHz (DC Coupled)
30Hz to 100MHz (AC Coupled)

Sensitivity

0.1Hz to 100MHz: 30mV

Coupling

AC or DC Selectable

Impedance

1 MΩ Resistance, Shunted by <40pF

Attenuator

x 1 or x 10 Switch Selectable

Low Pass Filter

-3dB Point of 100kHz, Switch Selectable

Slope

Positive or Negative Switch Selectable

* Resolution and Number of displayed digit (Table 1): Same as Input A
* Max. Input Voltage Level (Fig. 1): Same as Input A

Time Interval (A -> B)

Range

0.1 µSec-10Sec (0.1Hz-10MHz)

LSD

100nSec

Resolution

± LSD ± Trigger Error*

Accuracy

± LSD ± Trigger Error ± Time base error x T.I.

Multiplier

1, 10, 100, 1000 (Gate Time: 10S, 1S, 0.1S, 0.01S)

Ratio (A/B)

Range

0.1Hz to 10MHz (input A)
0.1Hz to 10MHz (input B)

Resolution

± LSD ± (B Trig. Error x Freq. A)/N

Accuracy

±1 Count of A ± B Trig. Error x Freq. A.

Input C Characteristics

Frequency Range

80 MHz to 2.4 GHz

Sensitivity

25mV from 80 MHz to 150 MHz
20mV from 150 MHz to 2.0 GHz
60mV from 2.0 GHz to 2.4 GHz

Coupling

AC only

Impedance

50 Ω ± 5%

Max. Input Level

3 Vrms sine wave

Resolution and Number of Displayed Digit

Time Base Selector

INT

EXT

INT

EXT

INT

EXT

INT

EXT

Gate Time

0.01S

0.1S

1S

10S

Number of Displayed Digit

5

6

6

7

7

8

8

9

Frequency (Input C)

Resolution

80 MHz-99 MHz

1 kHz

100 Hz

100 Hz

10 Hz

10 Hz

1 Hz

1 Hz

0.1 Hz

100 MHz-999 MHz

10 kHz

1 kHz

1 kHz

100 Hz

100 Hz

10 Hz

10 Hz

1 Hz

1 GHz-2.4 GHz

100 kHz

10 kHz

10 kHz

1 kHz

1 kHz

100 Hz

100 Hz

10 Hz

(Table 2)

Time Base Characteristics

Type

TCO (Temperature controlled oscillator)

Frequency

10.000000 MHz

Stability

±1 PPM (±1 count)

Line Voltage Stability

Less than ±1 PPM with ±10% line voltage variation.

Temperature Stability

±5 PPM from 0°C to 50°C

Max. Aging Rate

±5 PPM/year

Int. Std. Out

10 MHz (internal standard frequency output)

Level

1 Vpp or more.

Impedance

Approx. 600 Ω

Ext. Std. In

10 MHz (external standard frequency input)

Level

1.5 Vrms to 5 Vrms

Impedance

Approx. 600 Ω

Display Characteristics

Display

Nine Digit 0.56" LED with M/n, k/µ, Hz, m, Sec, G.T., Hold, and "OF" indicators. Function and Gate time: User Selected. "OF" Display shown when Count exceeds 999 999 999.

Hold

In Frequency and Period, TOTAL. Mode measurement in progress is stopped, and the last complete measurement is displayed. When Hold is released, a new measurement begins.

Gate Time

Depending on input frequency
<10mS------------Somewhere between 0.9 and 9mS
<0.1S--------------Somewhere between 9 and 90mS
<1S-----------------Somewhere between 90 and 900mS
<10S---------------Somewhere between 0.9 and 9S

Note: Last Measurement Display will remain for 10 Seconds after SIGNAL OFF.

Dimensions and Weight

Dimensions (W x H x D)

3.4 x 3.5 x 10.6" (240 x 90 x 270mm)

Weight

Approx. 5.5 lb (2.5 kg.)

Equipment Ratings

Plug and Socket

3 wire AC power plug and 3 wire outlet

Power & Fuse Ratings

Input Voltage

Fuse

Power Max.

103 ~ 126V AC (50/60Hz)

F 0.5A / 250V

15 W

206 ~ 252V AC (50/60Hz)

F 0.2A / 250V

 

Operating Environment

Temperature

0°C to +40°C (Accuracy Specified at 23°C ± 5°C)

Humidity

up to 85% RH (Relative Humidity) to 40°C without temperature extremes causing condensation within the instrument.

 

Storage Environment

Temperature

-20°C to +70°C

Humidity

below 85% RH

 

Insulation Category II

Portable equipment of local level.

Pollution Degree

2

Protection to IEC 529

Ordinary

Note: Specifications are subject to change without notice.



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