U6200A (6GHz Universal Counter / U6220A (400MHz Frequency Counter)

Measuring frequency over 400MHz within standard 6GHz Channel 3.
12 digits resolution with 1s gate time.
40ps time domain function resolution.
Great Features for Universal Purposes.
Full Math Functions & Easy Operation Panel.
Fast Measurement & Special Application
Free Software & Familiar SCPI Commands.

Note : Items in red at not available for the U6220A.

12 Digits Resolution & 6 GHz Frequency Measurement
The Picotest U6200A universal counter, whose production procedures conform to ISO 9004, has a frequency resolution of 12 digits per second (Figure-1), 40 ps time interval resolution and a complete set of test and analysis features. The standard U6200A’s CH3 has a range from 375 MHz to 6GHz and the standard CH 1 & 2 has a range from 1 mHz to 400 MHz.

Great Features for Universal Purposes

The Picotest U6200A also provides great features including Frequency & Ratio (11Digits/Sec.), Time interval, Period (2.5 ns to 1000s), Duty Cycle, Pulse Width, Rise/Fall Time, Peak Volts (100 Hz~300 MHz), Phase, Totalize, Temperature Stability (< 1 PPM), Aging Rate (< 2 PPM per year), timebase reference channel (Figure-2) and complete Front-End Isolation. Moreover, it offers 20 memory locations (Figure-3) for storing frequently-used operations.

Full Math Functions & Easy Operation Panel

The Picotest U6200A offers built-in statistics and math functions. Users can make measurements, simultaneously measure and report mean, min/max, delta and standard deviation (Figure-4). Scale & offset can be easily used for compensation purpose according to the users’ applications. In addition, in order to obtain these measurements, the user can easily use the numeric buttons to define settings. The U6200 also provides users with visual indications of selected functions (Figure-5).

Fast Measurement & Special Application

The U6200A supports real-time digital signal processing technology, which can be applied to analyze data while simultaneously obtaining new readings and speeding measurement. The “Limit Modes” feature is worth to be mentioning since users can set margin according to their specific measurements, and via Go-On or Stop and USB Output settings (Figure-6), the U6200A can continue or stop measuring as a limit is exceeded, and generate an output signal to trigger external devices.

Free Software & Familiar SCPI Commands

Users can obtain data logs (Figure9) via PC software (Microsoft Excel®) using a USB, or an optional GPIB interface. Furthermore, U6200A also supports a webserver function, so users can easily control it via a LAN interface (Figure 10) by entering an Ethernet address (Default: 192.168.0.247) on web browsers. In addition, through the SCPI commands compatible with Agilent 53132A, the Picotest U6200A can utilize familiar syntax string for users’ applications. For more command information, please refer to the U6200A User’s Manual in Chapter 7.

U6200A / U6220A Specifications

A. Specification List

This appendix contains the specifications of the U6200A/220A. It covers the AC, DC, Resistance, Temperature, and Frequency/Period characteristics under a variety of conditions. It also contains the general characteristics and accuracy calculations for your convenience. A lot of efforts are made to make sure these specifications serve your needs for production, engineering and/or research purposes. All specification applies to the U6200A/220A unless noted otherwise.

※ Note: The U6220A doesn’t provide the specifications colored green.

Channel 1 & 2 (for U6200A only) Input Specifications
DC Coupled	1mHz to 400 MHz
AC Coupled	200KHz to 400 MHz (50 Ω) 30 Hz to 400 MHz (1 MΩ)
FM Tolerance	FM Tolerance: 25%
Voltage Range and Sensitivity
1mH to 225 MHz	20 mVrms to ±5 V ac + dc (Medium and High) 25 mVrms to ±5 V ac + dc (Low)
225 MHz to 400 MHz	30 mVrms to ±5 V ac + dc
Channel 1 & 2 (for U6200A only) Input Characteristics
Impedance (ATT X 1, 1 MΩ Capacitance) (ATT X 10, 1 MΩ Capacitance)	1 MΩ or 50 Ω 24 pF 15 pF
Coupling	AC or DC
Low-Pass Filter	100 KHz (or disabled) –20 dB at > 1 MHz
Input Sensitivity	Selectable between Low, Medium(default), or High Medium is approximately 1.35x High Sensitivity, low is approximately 1.7x High Sensitivity
Internal Noise	200uVrms(typical)

Voltage Range and Sensitivity (Single-Shot Pulse)
1.5ns to 10ns Pulse Width	80 mVpp to 10 Vpp (150 mVpp with optional rear connectors)
>10 ns Pulse Width	50 mVpp to 10 Vpp (150 mVpp with optional rear connectors)

Trigger Level(ATT x 1)
Range	±5.125 V
Accuracy	±(15 mV + 1% of trigger level)
Resolution	2.5mV
ATT x 10 Range	X 10
Trigger Slope	Positive or Negative
Auto Trigger Level	Range	0 to 100% in 1% steps
	Frequency	Peak Voltage fast mode >10 KHz Peak Voltage slow mode > 100 Hz Amplitude> 100 mVpp (No amplitude modulation)

Damage Level
DC~400MHz 50 Ω	12 Vrms
0 to 3.5 kHz, 1 MΩ	350 V dc + ac pk
3.5 kHz to 100KHz, 1 MΩ	350 V dc + ac pk linearly derated to 12 Vrms
100KHz to 400MHz, 1 MΩ	12 Vrms
Attenuator
Voltage Range	x10
Trigger Range	x10

1. Specifications and Characteristics for Channels 1 and 2 are identical for both Common and Separate Configurations.

2. Values shown are for x 1 attenuator setting. Multiply all values by 10 (nominal) when using the x 10 attenuator setting. Note that it may necessary to recalibrate the input offset in the application environment (especially at high temperature) to achieve maximum sensitivity.


Channel 3 Input Specifications (for U6200A only)
Frequency Range		375 MHz to 6 GHz
Channel 3 Input Characteristics (for U6200A only)
Impedance		50 Ω
Coupling		AC
VSWR		< 2.5:1
Power Range and Sensitivity (Sinusoid)
375 MHz to 500 MHz								-16 dBm to +15 dBm
500 MHz to 1 GHz								-20 dBm to +15 dBm
1 GHz to 2 GHz								-23 dBm to +15 dBm
2 GHz to 4 GHz								-25 dBm to +15 dBm
4 GHz to 5 GHz								-21dBm to +15 dBm
5 GHz to 5.5 GHz								-20 dBm to +15 dBm
5.5 GHz to 6 GHz								-17 dBm to +15 dBm
Damage Level
+25 dBm, DC ±12V

External Arm Input Specifications
Signal Input Range			LVTTL and TTL compatible
Timing Restrictions
Pulse Width			> 50 ns
Transition Time			< 250 ns
Start-to-Stop Time			> 50 ns
Damage Level			12 Vrms
External Arm Input Characteristics
Impedance			1 kΩ
Input Capacitance			17 pF
Start Slope			Positive or Negative
Stop Slope			Positive or Negative
Notes			1. External Arm is available for all measurements except Peak Volts. 2. External Arm is referred to as External Gate for some measurements.

Internal Time Base Stability
					Standard (0° to 50°C)
Temperature Stability (referenced to 25°C)					<± 1 x 10^-6
Aging Rate	Per Day Per Month Per Year				<± 0.2 x 10^-6 ± 2 ppm
Calibration					Electronic

External Time Base Input Specifications
Voltage Range			200 mVrms to 10 Vrms
Damage Level			12 Vrms
External Time Base Input Characteristics
Threshold			0 V
Impedance			1 kΩ
Input Capacitance			25 pF
Input Frequency			10 MHz
Internal vs. External Time Base Selection			Manual				Select Internal or External
			Automatic				Internal used when External not present (default)
Time Base Output Specifications
Output Frequency			10 MHz
Voltage			570 mVpp (0 dBm), typical
Impedance			50 Ω (typical), AC coupled

Measurement Specifications
Frequency, Period Channel 1 and 2			1 mHz to 400 MHz (2.5 ns to 1000 s)
Trigger			Default setting is Auto Trigger at 50 %
“Default” Gate Time			0.1 sec
STD CH 3			375 MHz to 6 GHz (0.166 ns to 2.6 ns)
Frequency Ratio			CH 1/ CH 2, CH 1/ CH 3, CH 2/ CH 1, CH 3/ CH1
			(Measurement is specified over the full signal range of each input.)
Results Range			10^-10 to 10¹¹
“Default” Gate Time			0.1 sec
Time Interval			Measurement is specified over the full signal ranges of Channels 1 and 2. The width of the pulse must be greater than 1 ns, frequency range to 300 MHz.
Trigger			Default setting is Auto Trigger at 50 %
Results Range			-0.5 ns to 10⁵ s
Resolution			40 ps
RMS Resolution			120 ps
Systematic Uncertainty			±(TI × Time Base Error) ± Trigger Level Timing Error ± 500 ps Differential Channel Error
Pulse Width Time			Measurement is specified over the full signal range of Channel 1. The width of the pulse must be greater than 1 ns frequency range to 300 MHz).
Pulse Selection			Positive or Negative
Trigger			Default setting is Auto Trigger at 50%
Results Range			1.5 ns to 105 s
Resolution			40 ps
RMS Resolution			120 ps
Systematic Uncertainty			± (Pulse Width Time x Time Base Error) ± Trigger Level Timing Error ± 500 ps Differential Channel Error.
Rise/Fall Time			Measurement is specified over the full signal range of Channel 1. The width of the pulse must be greater than 1 ns frequency range to 300 MHz).
Edge Selection			Positive or Negative
Trigger			Default setting is Auto Trigger at 10% and 90%
Results Range			2 ns to 105 s
Resolution			40 ps
RMS Resolution			120 ps
Systematic Uncertainty			± (Edge Time x Time Base Error) ± Trigger Level Timing Error ± 500 ps Differential Channel Error
Phase			Measurement is specified over the full signal range of each input. The width of the pulse must be greater than 1 ns, frequency range to 300 MHz
Results Range			-180° to +360°
Resolution			40 ps
RMS Resolution			120 ps
Systematic Uncertainty			± (Trigger Level Timing Error) ×Frequency
Duty Cycle			Measurement is specified over the full signal range of Channel 1. The width of the pulse must be greater than 1 ns, frequency range to 300 MHz
Pulse Selection			Positive or Negative
Trigger			Default setting is Auto Trigger at 50 %
Results Range			0 to 1
Resolution			40 ps
RMS Resolution			120 ps
SystematicUncertainty			± Trigger Level Timing Error ± 500 ps Differential Channel Error
Totalize			Measurement is specified over the full signal range of Channel 1. The width of the pulse must be greater than 1 ns, frequency range to 400 MHz
Pulse Selection			Positive or Negative
Trigger			Default setting is Trigger at 0 V
Results Range			0 to 10¹⁵
Resolution			1 count
Systematic Uncertainty			± 1 count
Peak Voltage			Results Range			-5.1 V to + 5.1 V
			Resolution			2.5 mV
DC Signals						15 mV + 2 % of V		peak-to-peak amplitude greater than 200 mV
DC Signals (ATT x 10)						150 mV + 2 % of V		peak-to-peak amplitude greater than 1 V
1 Vp-p, 50 Ω, ATT OFF			100 Hz ~ 10 KHz			15 mV + 2 % of V		peak-to-peak amplitude greater than 200 mV
			10 KHz ~ 5 MHz			15 mV + 4 % of V
			5 MHz ~ 80 MHz			15 mV + 7 % of V
			80 MHz ~ 300 MHz			15 mV + 15 % of V

Rear Input Option Channel Isolation
Frequency				Front Channel(dB)					Rear Channel(dB)
100KHz				<-85					<-85
1MHz				-85					-75
10MHz				-78					-55
50MHz				-67					-42
100MHz				-62					-37
200MHz				-55					-35
300MHz				-50					-36
400MHz				-47					-33

The peak volts measurement will keep operating up to 400 MHz, although results act as references only.

The differential channel Error terms which counted by many systematic uncertainty equations result channel-to-channel disaccord and internal noise. These issues can be improved by the TI calibration in the well-controlled temperature environment.

A.1 RMS Resolution

Rms	100Hz	1KHz	10KHz	100KHz
U62 (10ms)	0.000000842	0.000003438	0.000013896	0.000067275
U62 (100ms)	0.0000001	0.000000828	0.000005093	0.000011508
U62 (1s)	0.000000001	0.000000098	0.000001212	0.000004869

Rms	1MHz	10MHz	100MHz	1GHz
U62 (10ms)	0.000677504	0.004830870	0.042107484	0.611551072
U62 (100ms)	0.000101040	0.002272900	0.006344503	0.055991810
U62 (1s)	0.000058166	0.000469601	0.001275299	0.002602258

The graph doesn’t include the effects of trigger error. To place an upper bound on the added effect of this error term, it’s necessary to determine the frequency error from the proper graph and add a trigger error term as the following equation:

External source and input amplifier noise might advance or postpone the trigger points that define the start and end of a measurement. The resulting timing uncertainty is a function of the slew rate of the signal and the amplitude of spurious noise spikes (relative to the input hysteresis band).

The (rms) trigger error relative to a single trigger point is:

B. Preset Values and Save/Recall Information

※ Note: The U6220A doesn’t provide the function via the channel 2 colored green.

		Value at *RST ( GPIB Reset )	In Save/Recal	In non-volatile memory
Input impedance	CH1	1E+6Ohms	yes	no
Input impedance	CH2	1E+6Ohms	yes	no
Input Attenuation	CH1	×1	yes	no
Input Attenuation	CH2	×1	yes	no
Trigger Level	CH1 (percent)	50	yes	no
	CH2 (percent)	50	yes	no
	CH1 (volts)	0	yes	no
	CH2 (volts)	0	yes	no
Trigger Slope	CH1	positive	yes	no
Trigger Slope	CH2	positive	yes	no
Sensitivity	CH1	Medium	yes	no
Sensitivity	CH2	Medium	yes	no
Scale		1	yes	no
Offset		0	yes	no
Limits parameters	Limit test on/off	off	yes	no
	On fail stop/go on	go on	yes	no
	Lower limit	0	yes	no
	Upper Limit	0	yes	no
Stats parameters	Stats on/off	off	yes	no
	Measurement count	100	yes	no
	Display measurement/stats	measurement	yes	no
	Use all/in limits	all	yes	no
	On-single measurement	1	yes	no
Timebase		auto	yes	no
Trigger Offset Cal Parameters		Channel 1 trigger offset Inp1 cal	no	yes
		Channel 2 trigger offset Inp2 cal	no	yes
		Channel 1 trigger offset Att1 cal	no	yes
		Channel 2 trigger offset Att2 cal	no	yes
Trigger Gain Cal Parameters		Channel 1 trigger gain Inp1 cal	no	yes
		Channel 2 trigger gain Inp2 cal	no	yes
		Channel 1 trigger gain Att1 cal	no	yes
		Channel 2 trigger gain Att2 cal	no	yes
Time Interval Offset Cal Parameters		Fine1	no	yes
		Fine2	no	yes
		Quick	no	yes
Timebase cal Parameters			no	yes

C. General Specifications

※ Note: The U6220A doesn’t support the accessories from item 1 ~ 4 colored green.

Item	Limitation & description
Power Supply Voltage	100V/240V ± 10% 50Hz~60Hz ± 10%
Power Supply Voltage	100V/120V ± 10% 400Hz ± 10%
Power Requirements	Max. 80VA (30W Typtical)
Operating Humidity	Maximum relative humidity 80% for temperature up to 31 ℃ decreasing linearly to 50% relative humidity at 40℃
Operating Environment	0 to 55 ℃
Storage Temperature	- 40 ℃ to 70 ℃
Operating Altitude	Up to 2000m
Dimensions for Rack (WxHxD)	214.6 x 88.6 x 346.9 mm
Weight	3130 g / 2887 g
Safety	IEC61010-1:2010/EN61010-1:2010 (3^rd Edition)
	IEC61010-2-030:2010(1^st Edition)/
	EN61010-2-030:2010
EMC	EN61326, IEC61000-3, IEC61000-4
Warm-up Time	1 Hour
Warranty	1 Year
Accessory	1. U6200-opt04: Rear panel input module (CH1/CH2) 2. U6200-opt05: Rear panel input module (CH1/CH2/CH3) 3. M3500-opt04: GPIB Card

※ Note 1: The accessories have to be assembled in Picotest.

※ Note 2: Not to position the equipment so that it is difficult to operate the disconnecting device.

※ Note 3: Documentation shall instruct against replacing detachable mains supply cords by inadequately rated cords.

Options

U6200-OPT04 : Rear Input (CH1/2) module
U6200-OPT05 : Rear panel input module -- CH1/2/3
M3500-OPT04 : GPIB卡

U6200A(6GHz) / U6220A(400MHz)

U6200A (6GHz Universal Counter / U6220A (400MHz Frequency Counter)

Picotest Corp.

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