RF and EMC Test Equipment from TTi - Thurlby Thandar Instruments

 
  TGR6000 - Description and Specifications


TGR6000 - 6GHz Synthesised RF Generator

  10MHz to 6000MHz frequency range
  10Hz setability, +/-1ppm frequency stability
  Locking to external frequency standard
  -110dBm to +7dBm amplitude, 0.1dB steps
  Fast stepping sweep with dwell times down to 10ms
  List sweep of up to 1000 points of amplitude vs frequency
  User compensation tables for specific test set-ups
  Storage for 12 generator set-ups and 16 sweep lists
  Compact half-rack 2U casing uses minimum bench space
  Full remote control through RS232, USB, LAN and GPIB
  Significantly lower cost than other 6GHz generators


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Overview

The TGR6000 is a low-cost RF signal generator with a maximum frequency of 6GHz. It is intended for CW (carrier wave) applications where modulation is not required, and avoids the costs associated with adding modulations.

Low phase noise is matched by low leakage, low residual FM and spurii. The internal timebase has a 1ppm stability, and an external frequency reference can be used for higher precision.

The output amplitude and/or frequency can be swept over the full range of each in a single sweep. The instrument can be set up to perform two types of sweep. The first sweep type is a Step Sweep in which the start and stop conditions are defined, together with the number of points in the sweep, linear or logarithmic spacing between points, and a dwell time at each point.

 


The other sweep type is a List Sweep in which up to 1000 points are defined in a list, with the frequency, level and dwell time specified for each point. Both types of sweep can be free run or triggered by a Sweep Trigger from a variety of sources; in addition, a Point Trigger can be defined for each individual step of the sweep. A rear panel SYNC output signal indicates when the output is stable, and can be user-programmed to be high or low.

The output level can be adjusted to correct for external equipment frequency response using the TRIM function. The TRIM function consists of a user programmable list of up to 100 amplitude adjustment /frequency pairs. 

The instrument provides non-volatile storage for up to 12 instrument setups and up to 16 sweep lists.
The instrument is remotely controllable via LAN, USB, RS232 or GPIB.

SPECIFICATIONS
Specifications apply after 30 minute warm-up, ambient 5?C to 40?C
FREQUENCY
Frequency Range: 10MHz to 6000MHz
Setting Resolution: 10Hz by direct keyboard entry, or in user-set increments of 10Hz to 999?999MHz by rotary control or increment?decrement keys.
Display Resolution: 10Hz
Phase Noise: 500MHz Carrier: <-110dBc/Hz (typ) @ 20kHz offset; <-120dBc/Hz (typ) @ 100kHz
3GHz Carrier: <-95dBc/Hz (typ) @ 20kHz offset; <-110dBc/Hz (typ) @ 100kHz offset
6GHz Carrier: <-89dBc/Hz (typ) @ 20kHz offset; <-104dBc/Hz (typ) @ 100kHz offset
Residual FM: Equivalent peak deviation for 300Hz to 3?4kHz B/W: 12Hz at 500MHz carrier

Settling Time:

<8ms to settle within 100Hz or 0.1ppm of final frequency, if greater.

REFERENCE FREQUENCY
Options: Internal or External (via rear panel BNC)
Internal Accuracy: +/- 1 ppm over temperature range 1 5?C to 30?C;  +/- 2 ppm over 5?C to 40?C.
Internal Stability: < +/-1ppm/year ageing.
Internal Ref. Out: 10MHz from 50 Ohms, amplitude 2V pk-pk into 50 Ohms.
External Ref In: 10MHz into 50 Ohms, amplitude 2V pk-pk to 5V pk-pk.
OUTPUT LEVEL
Output Level Range: ?110dBm to +7dBm (0?1?V to 500mV into 50W).
Setting Resolution: 0?1dB (or 0?01?V to 1mV) by direct keyboard entry, or in user-set increments of 0?1dB to 100dB (or 0?01?V to 100mV) by rotary control or increment?decrement keys.
Accuracy: Better than ? 2dBm.
Harmonics: <-25dBc at +7dBm. <-30dBc@levels <=0dBm 30 to 6000MHz,
<-25dBc@levels <=0dBm 10 to 30MHz
Sub-Harmonics: <3000MHz : None. >3000MHz :<?40dBc (typ) @ +7dBm.
Non-Harmonic Spurii: <?50dBc >10kHz offset 10 to 3000MHz (Note 1)
<-44dBc >10kHz offset 3000MHz to 6000MHz (Note 2).
                             Note 1 - <-45dBc >10kHz offset 1900?2150MHz
                             Note 2 - <-39dBc >10kHz offset 3800?4300MHz.
Carrier Leakage: <0.5uV generated into a 50W load by a 2 turn 25mm loop, at 25mm from the generator with output set to <-10dBm into a 50W sealed load.
Output Impedance: 50W
Output Connector: TYPE N
Reverse Protection: 50V DC
Output Switch: RF OUT on-off switch with LED for ON status.

FREQUENCY and AMPLITUDE SWEEP

Step Sweep Step frequency and/or amplitude according to a formula over a specified number of points.  Formula Specifies: Frequency start/stop. Amplitude start/stop.
Dwell time at each step ? programmable 0.01 to 10.000sec
Max Points: 1000
Sweep Run: Continuous or single. Sweep up or down
Step Spacing: Linear or logarithmic
Sweep Triggering: Manual, Ext. signal, timed (0.1 ? 999.9sec) or via remote interface
Sync Signal: (Output Stable) available during dwell time. Programmable to be high or low
List Sweep As for Step Sweep except that a user defined table of frequency, amplitude and dwell time values defines the steps. The table can be created within the instrument or downloaded via the remote interfaces.
Max Points: 1000
List Storage: Up to 16 Sweep Lists can be stored permanently within the instrument
Point Trigger Each point in a sweep (step or list) can be subject to a trigger event rather than a dwell time.
Point Triggering Manual, Ext. signal or via remote interface.
TRIM (User Level Compensation Tables)
  A table of frequency/gain pairs allows the user to modify the generator output level with respect to frequency to calibrate an entire test set up or improve the calibration of the generator alone. The table can be created within the instrument or downloaded via the remote interfaces.
Max Points: 100

OTHER INPUTS/OUTPUTS

Trig In DC coupled External Trigger Input signal used for step Sweep changes in Point Trigger mode
Input Threshold: 1.65V nominal. Trigger polarity can be set to Negative Edge or Postive Edge
Input Protection Maximum/minimum external applied voltage is +6V or ?1V.
Sync Out Rear panel output SYNC signal goes to its active state when generator output frequency & level have settled within specification after a step change during Sweep. SYNC returns to inactive state at end of specified dwell period
Active Output Level: +5V (Active state set to ?Pos?) or 0V (Active state set to ?Neg?)
Output Impedance: 50 Ohm Minimum load impedance is also 50 Ohm
Output Protection: Output will withstand accidental short circuit to ground and applied external voltages up to +5V.
INTERFACES

Full digital remote control facilities are available through the RS232, USB, LAN and GPIB interfaces

RS232:

9-pin D connector. Variable Baud rate can be set between 1200 and 115200 Baud maximum.

USB: USB 2.0 connection (backwards compatible with USB 1.x). Operates as a virtual COM port
GPIB (IEEE-488): Conforming with IEEE488?1 and IEEE488?2.
Ethernet (LAN) Standard 10/100 base-T hardware connection. ICMP and TCP/IP Protocol for connection to Local Area Network or direct connection to a single PC
GENERAL
Display: 20 character x 4 row backlit alphanumeric LCD
Data Entry: Keyboard selection of all major parameters. Value entry by character scroll using rotary control or up/down keys, or value stepping in user-selected increment values using rotary control or up/down keys
Stored Settings: Up to 12 complete instrument set-ups plus 16 sweep lists may be stored in non volatile memory.
Size: 2U (86.5mm) height; half-rack (213mm) width; 350mm long.
Weight: 3.65 kg. (8 lb)
Power:

110-240VAC ?10% 50/60Hz; 100-120VAC ?10% 400Hz; 60VA max.
Installation Category II

Location Built-in tilt feet for bench-top use. Rack mountable with optional mount
Options: 19 inch rack mounting kit.
ENVIRONMENTAL & SAFETY
Operating Range: +5?C to 40?C, 20-80% RH.
Storage Range: ?20?C to + 60?C.
Environmental: Indoor use < 2000m, Pollution Degree 1.
Safety: Complies with EN61010-1.
EMC: Complies with EN61326
 Thurlby Thandar Instruments Ltd. operates a policy of continuous development and reserves the right to alter specifications 
  without prior notice.

Thurlby Thandar Instruments Limited
Glebe Road, Huntingdon, Cambridgeshire PE29 7DR United Kingdom
Tel: +44 1480 412451  Fax: +44 1480 450409  Web: www.tti-test.com  Email: sales@tti-test.com