5345A Electronic Counter

First Catalog c.1986

Manual

Operates up to 500 MHz directly; 40 GHz with appropriate plug-ins. Uses a reciprocal method to quickly achieve precise measurements of low frequencies.

counters:5345a.jpg

5345A Application Notes

Number Title
AN-173-1 Dynamic Measurement of Microwave VCOs with 5345A Counter
AN-174-9 Making Automatic Phase Measurements with the 5345A Electronic Counter
AN-225-1 Measurement Considerations When Using the 5390A Option 010 (5345A)
AN-401-03 5345A Electronic Counter - HP1000 Programming Example

5345A Service Notes

Model Number Service Note Type Service Note Number Service Note Description Date
5343A Safety 5343A-31C-S New cabinet support strut and top cover 1993.01.12
5344A Safety 5344A-01A-S New cabinet support strut and top cover 1993.01.12
5345A Modification Available 5345A-1 Serial prefix 1428- and below. Input amplifier failures. 1975-01
5345A Modification Available 5345A-2 Serial prefix 1428 and above. Input amplifier failures. 1975-04
5345A Information Only 5345A-6 A9 Maingate Assembly troubleshooting procedure 1977-07
5345A Information Only 5345A-7 A11 Scaler Assembly troubleshooting procedure 1977-07
5345A Information Only 5345A-8 A10 Gate Control Assembly troubleshooting procedure 1977-07
5345A Information Only 5345A-9A 9825 HP-IB verification program for 5345A, opt 011 (Supersedes 5345A-9) 1980.02.05
5345A Information Only 5345A-9B HP-IB verification program for 5345A, opt 011 (Supersedes 5345A-9A) 1981-01
5345A Modification Recommended 5345A-10A Serials 1708 and below. Resistor changes on A4 input trigger assembly (05345-60004) to improve performance. (Supersedes 5345A-10) 1979.02.12
5345A Modification Available 5345A-11 All serials. Modification to A7 linear regulator assembly (05345-60007) to improve +15V supply operation 1978.02.03
5345A Information Only 5345A-12B HP-IB verification program for 5345A, Opt. 012 (Supersedes 5345A-12A) 1981-01
5345A Information Only 5345A-13 All serials. Clarification of special extender board compatibility with 5345A counters. 1978-02
5345A Modification Recommended 5345A-14 All serials. Elimination of shorting between circuit boards and board sockets. 1979-05
5345A Modification Recommended 5345A-15 Serials 1920A and below. Modification to improve mechanical interconnection with plug-ins. 1979-06
5345A Modification Recommended 5345A-16 A13 boards with series 1820 and 1912. Modification to prevent miscounting on REG CLK line 1979-06
5345A Modification Recommended 5345A-16A A13 boards with series 1820 and 1912. Modification to prevent miscounting caused by noise on reg. clk. line. 1980-05
5345A Modification Available 5345A-17 All serials. Summary of A3 and A4 Assembly U1 and U2 changes, replacement part numbers, and bias adjustments 1981-03
5345A Information Only 5345A-18 All serials. ROM part number changes. 1981-09
5345A Information Only 5345A-19A All serials. HP-IB verification program for 5345A option 011 using the HP 85A controller. (Supersedes 5345A-19) 1982-01
5345A Modification Available 5345A-21 All serials. HP-IB modification for Option 012 compatibility with HP 1000L series computers. 1981-09
5345A Modification Available 5345A-22 All options and serial number prefixes. Modification to improve input sensitivity 1982-02
5345A Modification Available 5345A-23 Option 012 serials. Modification to allow counter to respond properly to a serial poll by a series 200 controller. 1984-03
5345A Modification Available 5345A-24 5345A serials 21 34A07500 through 2346A10040 used with the 5355A automatic frequency converter plug-in and the 5356A/B/C frequency converter heads. Modification to prevent miscount problem. 1984-03
5345A Modification Available 5345A-25 All serials. Modification to eliminate temperature sensitive input amplifier. 1984-03