diff --git a/RFPA/readme.md b/RFPA/readme.md index 5d0503e75b997d5473e37a9cc87b5a44f29bc4a6..486710c98c4b735be986e1d581cda26771653dbf 100644 --- a/RFPA/readme.md +++ b/RFPA/readme.md @@ -14,9 +14,49 @@ As a main component the broadband high power amplifier ZHL-20W-13SW+ (SN: RB8102  -Figure 2 - Wiring diagram of the 8-channel amplifier. The components used can be found in Table 1. +**Figure 2** - Wiring diagram of the 8-channel amplifier. The components used can be found in Table 1. | Item No. | Component | Function | Est. cost per Pc. [€] | Amount | Total cost [€] | Source 1 | ----- | -------- | -------- | ----- | ----- | ----- | --------| | 1 | SMA sockets | RF input | XX | 8 | xx | xx | | 2 | BNC sockets | Input external 5V TTL signal | XX | 1 | xx | xx | + +**Table 1** - Components used in RFPA build. + + + + +**Figure 3** - Front view of RFPA with annotated components (see Table 1) + + + +**Figure 4** - Rear view of RFPA with annotated components (see Table 1) + + + +**Figure 5** - Top view of the RFPA with the cover removed and annotated components (see Table 1) + + +## Functionality + +Before switching on the PTX amplifier, the unit must be connected to the mains voltage (230 V / 50 Hz) at the C14 socket ⑦ and an input or output signal must be connected to the eight channels ① and ⑤Then the PTX amplifier can be switched on with the rocker switch ④. +The rocker switch ③ can be used to select between internal manual unblanking (rocker switch right, ON) and blanking by an external TTL signal (rocker switch left, TTL). A 5 V TTL signal can be connected to the BNC socket ②. Unblanking is necessary to unlock the amplifier modules. + +## Functional tests + +### Test of the supply current +By measuring the supply current I_SC, the general function of the individual amplifiers (High Power Amplifier ZHL-20W-13SW+) is to be tested. For this purpose, a multimeter (VOLTCRAFT MT-51, SN: 09126841) was inserted into the current path of the supply current I_SC. According to the amplifier's data sheet, the supply current I_SC is max. 2.8 A during proper operation (with fan). The values measured (Table 2) are within the tolerances. + +(table 2 here) + +### Testing of electrical safety + +The electrical safety test was carried out in accordance with DIN 0701 0702. + +### Power measurement + +The power measurement is intended to test the general function of the PTX amplifier. For the test setup, an attenuator (inventory no.: 98041129), an oscilloscope (inventory no.: 200052853/1) and a signal generator (inventory no.: 97037910) were used as displayed in Figure 6. The attenuator has an attenuation factor of -30 dB. The measured results are displayed in Table 3. + + + +