Search found 28 matches

by abrush1
Mon Mar 09, 2015 5:29 pm
Forum: Resistance / Impedance
Topic: 252 Impedance Meter
Replies: 1
Views: 3254

Re: 252 Impedance Meter

This part is available from TEGAM. We have 56 pieces in stock today. We'd probably be a relatively expensive source, but we have it and can ship when you order. Call (440) 466-6100 to talk to some one who can quote you a price, or e-mail to "sales@tegam.com". The part is specified to be a Viking/Coo...
by abrush1
Mon Mar 02, 2015 10:21 am
Forum: 1830A RF Power Meter
Topic: Using the 1820B Temp Regulator
Replies: 4
Views: 6533

Re: Using the 1820B Temp Regulator

There are two sources of heat to a TEGAM thermistor power sensor: The "heater" controls the temperature of a large, heavy, metal part of the housing that surrounds the input line. This control is done to reduce the effects of ambient temperature, light, and wind on the reading. It takes 2-3 hours fo...
by abrush1
Fri Feb 27, 2015 9:39 am
Forum: 1830A RF Power Meter
Topic: Using the 1820B Temp Regulator
Replies: 4
Views: 6533

Re: Using the 1820B Temp Regulator

Ryan; There isn't a practical reason that the 1820B heater will not do the same job as an 1830A heater. In fact, I did an experiment earlier this week with a M1110 that has a temperature sensor inside... an 1820B heated the mount to the same temperature as an 1830A to within the 0.1 C resolution of ...
by abrush1
Tue Dec 09, 2014 5:06 pm
Forum: Resistance / Impedance
Topic: R1L-D1
Replies: 1
Views: 43424

Re: R1L-D1

To start with, I'm very sorry that no one noticed this question for so long. Your question is very valid. Normally, 2-wire and 4-wire specifications differ substantially, but in this case, I think that footnote 1 of the table in the manual tells all: It says, 1 Does not include test lead or contact ...
by abrush1
Wed Jun 25, 2014 10:23 am
Forum: 1830A RF Power Meter
Topic: CURRENT_STATE value list
Replies: 4
Views: 26130

Re: CURRENT_STATE value list

I don't think that using CURRENT_STATE adds any information that you don't get from the error code: If you issue GET CURRENT_STATE CV and see 00:3, that means that the system is in normal operation (the 00 error), and that the display state is in index 3 of the list above (SM_DISPLAY_READINGS), whic...
by abrush1
Tue Jun 24, 2014 1:17 pm
Forum: 1830A RF Power Meter
Topic: CURRENT_STATE value list
Replies: 4
Views: 26130

Re: CURRENT_STATE value list

Dear Selim; The machine state values returned as the CV of CURRENT_STATE are, "SM_DEFAULT", "SM_DISPLAY_ERROR", "SM_DISPLAY_MENU", "SM_DISPLAY_READINGS", "SM_DISPLAY_SENSOR_DATA", "SM_DISPLAY_MESSAGE", "SM_DISPLAY_RANGES", "SM_DISPLAY_STANDBY", "SM_DISPLAY_CALIBRATION", "SM_DISPLAY_CONFIRMATION", "S...
by abrush1
Wed Jun 11, 2014 2:06 pm
Forum: Amplifiers
Topic: Info on Pragmatics 102 amplifier.
Replies: 1
Views: 27067

Re: Info on Pragmatics 102 amplifier.

Dear Kamran; All I know is that the Pragmatic 102 is listed in old Pragmatic lists as a dual channel differential I-Q amplifier. This product was apparently obsolete already when Pragmatic sold their AWG and amplifier line to TEGAM in 2002, so the manuals, drawings and parts lists were either not tr...
by abrush1
Tue Apr 23, 2013 3:57 pm
Forum: 1830A RF Power Meter
Topic: Need more resolution when testing at low power
Replies: 0
Views: 19242

Need more resolution when testing at low power

Here's the situation: You put an attenuator between the DUT port of your feed-through standard. Since you have measured the S-parameters of the attenuator, you calculate a new calibration factor for the assembled feed-thru+attenuator. With a 20 dB attenuator, the calibration factor is approximately ...
by abrush1
Thu Mar 14, 2013 12:02 pm
Forum: RF Power Standards
Topic: How Does the Heater in TEGAM Sensors Work?
Replies: 0
Views: 33417

How Does the Heater in TEGAM Sensors Work?

We get questions about how the mount heater system works, how it improves reading stability, and how a user can really know if the mount is "Ready". I think the best way to illustrate an answer is to show a graph of how the mount DC power changes as mount heater voltage and current change. 1130_Heat...
by abrush1
Tue Aug 07, 2012 9:55 am
Forum: RF Power Standards
Topic: F1130
Replies: 1
Views: 18939

Difference Between F1130, F1130A, and F1130B

F1130 was TEGAM's first 7mm / N connector "wideband" 100kHz to 18GHz thermistor mount. This was introduced before NIST alerted the community to the "RF Leakage" problem, and no F1130 was shipped new with common-mode filters. Some F1130 have been upgraded to contain filters, and these had a sticker a...