Specifications

Impedance

1MW or 50W software programmable

Coupling

DC or AC (per channel) software programmable

Maximum Signal Input

1 MW: 15V rms (DC to 1MHz), 5V rms (above 1MHz)

50W: 5V rms

Connectors

Front panel BNC s for Channels A and B

GTX2230

Channel A: Programmable DC to 225 MHz or 100 MHz to 2GHz

Channel B: DC to 225MHz

GTX2220

Channel A: Programmable DC to 225 MHz or 100 MHz to 1.3GHz

Channel B: DC to 225MHz

GC2210/GTX2210

Channels A and B: DC to 225MHz

Signal Range

+5 V to -5 V

Sine

25 mV rms DC 20MHz

50 mV rms 20MHz 50MHz

200 mV rms 50MHz 100MHz

500 mV rms 100MHz 1.3GHz (GTX2220)

500 mV rms 100MHz 2GHz (GTX2230)

Pulse

500mV pk-pk at 5nS pulse width

Range

PCB revision C and above: ±5.00V in 1mV steps

PCB revision A and B: ±5.00V in 40mV steps

Accuracy

±2% of setting ±0.01V

Auto Trigger

Automatic selection of optimum trigger level

Signal repetition rate: 100Hz to 75MHz

Impedance

2 kW in series with 47 nF

Maximum Input Voltage

15V rms

Coupling

AC

Sensitivity

150 mV RMS sine, 450 mV pk-pk pulse

Duty Ratio

40% to 60%

Frequency

10 MHz

Connector

Front panel BNC

Input Signal Characteristics

DC Coupled, TTL compatible ( 1.4 V threshold )

Minimum Pulse Width

15 ns

Impedance

2 KW

Connector

Front panel DIN

Output Signal Characteristics

DC Coupled, TTL compatible ( 1.4 V threshold )

Connector

Front panel DIN

Range

DC to 225MHz

Gate time

GC2200/GTX2200: 250µS to 3200S (plus up to one signal period)

 0.75 usec of resolution

GC2210/GTX2210: 1mS to 5000S (plus up to one signal period)

Number of significant digits

GC2220/GC2230/GTX2220/GTX2230: 10 per second of gate time, e.g., 7 digits in 1 ms

GC2210/GTX2210: 8 per second of gate time, e.g., 5 digits in 1 ms

Least Significant Digit (LSD)

Resolution (in Hertz)

Accuracy (in Hertz)

±Resolution ± TimeBaseError

Range

DC to 225MHz

Gate time

4 signal periods, fixed

Accuracy (in Hertz)

Range

-1 ns to 100,000 seconds (> 25 hr)

Least Significant Digit (LSD):

GC2220/GC2230/GTX2220/GTX2230: 100pS

GC2210/GTX2210: 10nS

Resolution

± LSD ±300 pSrms±StartTriggerError±StopTriggerError

Accuracy

± Resolution ± TimeBaseError ± TriggerLevelTimingError ± 2 nS

Min. pulse width

8 ns

Delay

Recognition of stop events is inhibited for a set time

GC2210/GTX2210 range:  20µS to 3200 seconds

Control

Count gate can be controlled by software, or by events on the second input channel (Gated Totalize).  In Gated Totalize, start and stop event slopes are selectable

Count rate

DC to 50 MHz, 10 ns min. pulse width

Modes

Software gate:  Gate and count reset are controlled by software

Hardware gate:  Count is reset before every gate

Accumulative:  Count is totalized over multiple gates

Range

0 to 2.8 x 1014 counts

Accuracy

±1 count, reading allowed while counting

Range

25nS to 100,000 seconds. See Time Interval for resolution and accuracy

Range

See Frequency

Gate time

See Frequency

Least Significant Digit (LSD)

Resolution

Accuracy

 ± Resolution ±TimeBaseError

Gate time

GC2200/GTX2200: 250µS to 3200 seconds with 0.75 µSec resolution (plus up to one signal period).

Range

DC - 100MHz on either input.  DC - 25MHz on second input

Least Significant Digit (LSD):

Resolution and accuracy

Accuracy

Same as Time Interval, plus 3 ns

Time controlled

 0.8mS to 3200 seconds

Up to 2300/sec theoretical measurements and around real 1400/sec measurements or better for Fast Frequency and all-time modes. Maximum number of measurements depends on the CPU speed, system configuration and number application running at the background and instrument settings.

Up to 1400/sec theoretical measurements and around real 1100/sec measurements or better for Frequency and Period modes. Maximum number of measurements depends on the CPU speed, system configuration, number application running at the background, and instrument settings.

200/Sec for all modes

Programmable on Channel A, Channel B, Arm Start, and Arm Stop

Available on all modes, except Totalize

Arm setup time: Min. 40nS before selected event

Standard

10 MHz crystal oscillator

GC2220/GC2230

GTX2220/GTX2230

Temperature:  5 ppm,  0o to 50o

Aging:  < 2 ppm/year

Supply voltage:  < 1x10-8 for 10% change

Short term:  < 5x10-10 rms with a 1 second averaging time

GC2210/GTX2210

Accuracy:  100 ppm (0.01%), 0o to 50o   including the effects of time, temperature and supply voltage

Standard

10 MHz crystal oscillator

GC2220/GC2220/GC2230

GTX2210/GTX2220/GTX2230

Temperature:  5 ppm,  0oC to 50o C

Aging:  < 1 ppm/year

Supply voltage:  < 3x10-8 for 1% change

Short term:  < 5x10-10 rms with a 1 second averaging time

Optional

10MHz Oven Controlled oscillator

GTX2200-OCXO

GTX2300-OCXO

Initial tolerance: +/- 100 ppb to final frequency at 1 hour, at 25o C

Frequency stability: +/- 100 ppb, 0o C to + 50o C

Aging (1 day): after 72 hour of operation, +/- 30 ppb, max

Aging (1 year): after 72 hours of operation, +/- 500 ppb, max

Aging (10 years): after 72 hours of operation, +/- 3.0 ppm, max

External Reference Input
 

External Reference Input (all modes)

Alternate signal channel when making single-channel measurements.

Trigger Error

Error due to noise superimposed on the input signal from both internal and external sources

En = rms noise of input signal (100 MHz bandwidth)

Trigger Level Timing Error

Time error due to threshold uncertainty

Time Base Error

Fractional frequency error of time-base reference, times the measurement result

Power Requirements (Typical)

 

+5 V @ 0.1 Amp (Typical)

+5 V @ 0.15 Amp (Max)

+3.3 V @ 0.1 Amp (Typical)

+3.3 V @  0.3 Amp (Max)

-5 V @ 0.05 Amp

+12 V @ 0.2 Amp

-12 V @ 0.02 Amp

Storage Temperature

-20 to+700C

Size

3U PXI/PCI

Weight

12 oz.